2025/02/25 更新

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写真a

サッサ フミヒロ
佐々 文洋
SASSA FUMIHIRO
所属
システム情報科学研究院 情報エレクトロニクス部門 准教授
工学部 電気情報工学科(併任)
システム情報科学府 電気電子工学専攻(併任)
マス・フォア・イノベーション連係学府 (併任)
職名
准教授
電話番号
0928023629
プロフィール
微細加工技術をベースとしたマイクロロボット、高密度生物学実験装置、生化学センサ、スマートマテリアル、ガスセンサ応用技術の研究開発。
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研究分野

  • ものづくり技術(機械・電気電子・化学工学) / 電子デバイス、電子機器

  • ナノテク・材料 / ナノマイクロシステム

学位

  • 博士(工学)

経歴

  • 九州大学 システム情報科学研究院 准教授 

    2022年 - 現在

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  • 九州大学 システム情報科学研究院 助教 

    2016年 - 2022年

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  • 2011-2013 日本電信電話株式会社 研究員   

    2011-2013 日本電信電話株式会社 研究員

  • 2013-2016 日本学術振興会特別研究員 (筑波大) 2014-2015 米国マサチューセッツ工科大学 博士研究員(上記と兼務)   

研究テーマ・研究キーワード

  • 研究テーマ: 微細加工技術を用いたマイクロロボット、生化学センサー、動く電子回路、スマートマテリアル、ガスセンサー応用技術の開発

    研究キーワード: BioMEMS, Micro robot, Kinetic electronics bio/chemical sensor

    研究期間: 2016年2月 - 現在

受賞

  • 文部科学大臣表彰 若手科学者賞

    2021年4月   文部科学省   化学/生物学分析の為のBioMEMSと応用ロボット研究

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    医療検査や環境測定を微小なチップ内で迅速に行う次世代の化学/生物学分析デバイスであるBioMEMSは、従来ひとつのデバイスで特定手順の分析実験を行う“専用機”がほとんどであり、分析対象ごとに個別の設計・開発が必要であった。受賞者は、これら課題を解決する汎用・高寿命微小化学分析アーキテクチャーの開発をはじめ、自ら能動的に動くBioMEMSなど、分野の枠を拡張する新概念を提案。さらにこれらをロボットシステムに組み込んだ大規模細胞培養実験システムや匂い痕跡探索ロボットなど具体的応用・実証を体系的に行った。
    本研究成果は、BioMEMSとロボティクス技術の融合による次世代のBioMEMS開発の基盤技術であり、未来の予防医療や防疫・衛生管理技術に大きく貢献すると期待される。

論文

  • Active Optical Sensor Microrobot Equipped With Multi-DoF Gripper Arm Based on Kinetic Electronics 査読

    Otsuka, R; Zhang, S; Hayashi, K; Sassa, F

    IEEE SENSORS LETTERS   7 ( 9 )   1 - 4   2023年9月   ISSN:2475-1472 eISSN:2475-1472

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    記述言語:その他   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE Sensors Letters  

    Soft robots with flexible and elastic body substrates made of soft materials provide a high degree of freedom (DoF), adaptability, and interact well with their environment. In this letter, we developed a film-type soft microrobot equipped with an optical sensor, light source, and a 4-DoF gripper arm based on kinetic electronics. This optical sensor film robot can be used for object handling, gripping, and optical sensing operations. It presents considerable potential for the low-cost fabrication of microrobots that can perform complicated operations, such as object handling and optical sensing.

    DOI: 10.1109/LSENS.2023.3303076

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  • Low-cost gel-filled microwell array device for screening marine microbial consortium 査読 国際誌

    C. Duran, S. Zhang, C. Yang, M. L. Falco, C. Cravo-Laureau, C. Suzuki-Minakuchi, H. Nojiri, R. Duran, F. Sassa

    Frontiers in Microbiology   2022年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  • Monolithic processing of a layered flexible robotic actuator film for kinetic electronics 国際誌

    Shiyi Zhang, Joseph Wang, Kenshi Hayashi, Fumihiro Sassa

    SCIENTIFIC REPORTS   11 ( 1 )   20015 - 20015   2021年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Low-invasive soft robotic techniques can potentially be used for developing next-generation body-machine interfaces. Most soft robots require complicated fabrication processes involving 3D printing and bonding/assembling. In this letter, we describe a monolithic soft microrobot fabrication process for the mass production of soft film robots with a complex structure by simple 2D processing of a robotic actuator film. The 45 mu g/mm(2) lightweight film robot can be driven at a voltage of CMOS compatible 5 V with 0.15 mm(-1) large curvature changes; it can generate a force 5.7 times greater than its self-weight. In a durability test, actuation could be carried out over 8000 times without degradation. To further demonstrate this technique, three types of film robots with multiple degrees of freedom and a moving illuminator robot were fabricated. This technique can easily integrate various electrical circuits developed in the past to robotic systems and can be used for developing advanced wearable sensing devices; it can be called "Kinetic electronics".

    DOI: 10.1038/s41598-021-99500-9

  • Inkjet-Printed Localized Surface Plasmon Resonance Subpixel Gas Sensor Array for Enhanced Identification and Visualization of Gas Spatial Distributions from Multiple Odor Sources 国際誌

    Jiang, TS; Guo, H; Ge, LP; Sassa, F; Hayashi, K

    SENSORS   24 ( 20 )   2024年10月   eISSN:1424-8220

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Sensors  

    The visualization of the spatial distributions of gases from various sources is essential to understanding the composition, localization, and behavior of these gases. In this study, an inkjet-printed localized surface plasmon resonance (LSPR) subpixel gas sensor array was developed to visualize the spatial distributions of gases and to differentiate between acetic acid, geraniol, pentadecane, and cis-jasmone. The sensor array, which integrates gold nanoparticles (AuNPs), silver nanoparticles (AgNPs), and fluorescent pigments, was positioned 3 cm above the gas source. Hyperspectral imaging was used to capture the LSPR spectra across the sensor array, and these spectra were then used to construct gas information matrices. Principal component analysis (PCA) enabled effective classification of the gases and localization of their sources based on observed spectral differences. Heat maps that visualized the gas concentrations were generated using the mean squared error (MSE) between the sensor responses and reference spectra. The array identified and visualized the four gas sources successfully, thus demonstrating its potential for gas localization and detection applications. The study highlights a straightforward, cost-effective approach to gas sensing and visualization, and in future work, we intend to refine the sensor fabrication process and enhance the detection of complex gas mixtures.

    DOI: 10.3390/s24206731

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  • Enhanced Localized Surface Plasmon Resonance Gas Sensing Using Metal-Organic Frameworks Combined With PEDOT: PSS Films

    Guo, H; Ge, LP; Jiang, TS; Sassa, F; Hayashi, K

    IEEE SENSORS LETTERS   8 ( 8 )   2024年8月   ISSN:2475-1472 eISSN:2475-1472

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE Sensors Letters  

    While localized surface plasmon resonance (LSPR) spectroscopy is highly sensitive to changes in refractive index (RI), its applications have traditionally been confined to larger biological entities. The detection of smaller molecules remains an important yet challenging objective for this method. As a representative case of small molecule detection, gas detection through changes in bulk RI presents a significant challenge for LSPR spectroscopy. In this letter, we report on the sensing of various gases using LSPR Au nano-urchin substrates. In preliminary experiments, although the substrates demonstrated rapid response and reversibility in gas detection, not all gases elicited a strong response. To further improve the response to gases, we encapsulated the nanoparticles with metal organic frameworks (MOF) materials. Given their excellence in gas adsorption, MOFs significantly enhanced the response sensitivity of the sensors fabricated in our experiments. The sensitivity increased several-fold for various types of gases, including ammonia, which was previously undetectable, now eliciting an effective response. Furthermore, since LSPR sensors lack selectivity in detection, we spin-coated a layer of PEDOT: PSS film onto the substrates. As a commonly used material in ammonia detection, the chemical interaction between PEDOT: PSS and ammonia enabled the sensor to exhibit better detection results for ammonia compared to other gases.

    DOI: 10.1109/LSENS.2024.3432073

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  • Integrated Subpixel-Patterned LSPR Gas Sensor via Inkjet Printing of Au/Ag Nanoparticles and Pigments for Multigas Detection

    Jiang, T; Ye, X; Guo, H; Wang, C; Ge, L; Sassa, F; Hayashi, K

    IEEE SENSORS LETTERS   8 ( 7 )   2024年7月   ISSN:2475-1472 eISSN:2475-1472

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE Sensors Letters  

    Localized surface plasmon resonance (LSPR) technology facilitates rapid gas detection but faces challenges regarding selectivity and fabrication complexity. This study presents a pioneering method for fabricating LSPR gas sensor arrays with pixel patterns using inkjet printing. By adjusting the compositions of Au nanoparticle (AuNP)/Ag nanoparticle (AgNP) ink patterns and incorporating various fluorescent dyes, spectrum information can be gathered to enable precise gas discrimination. Specifically, we have integrated 32 units within a compact 5 times 10 mathrm{m}{{mathrm{m}}2} area to form the subpixel sensor array, thereby minimizing sensor scale and enhancing gas selectivity. In addition, principal component analysis is employed to enhance selectivity among the six common gases. Notably, this letter marks the first fabrication of LSPR gas sensor subpixel pattern arrays through inkjet printing, which combines Au/Ag nanoparticles and fluorescent pigments. Despite its limited scale, this device offers high information density. This letter on subpixel patterned LSPR gas sensor arrays introduces a novel method for sensor fabrication and demonstrates significant potential for enabling rapid, sensitive, and selective gas detection in future research endeavors.

    DOI: 10.1109/LSENS.2024.3419812

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  • <i>Roseiterribacter gracilis</i> gen. nov., sp. nov., a novel filterable alphaproteobacterium isolated from soil using a gel-filled microwell array device 査読

    Nakai, R; Kusada, H; Sassa, F; Makino, A; Morigasaki, S; Hayashi, H; Takaya, N; Tamaki, H

    PLOS ONE   19 ( 6 )   e0304366   2024年6月   ISSN:1932-6203

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    記述言語:英語   出版者・発行元:PLoS ONE  

    Our previous studies indicate the abundant and diverse presence of yet-to-be-cultured microorganisms in the micropore-filtered fractions of various environmental samples. Here, we isolated a novel bacterium (designated as strain TMPK1T) from a 0.45-μm-filtered soil suspension by using a gel-filled microwell array device comprising 900 microwells and characterized its phylogenetic and physiological features. This strain showed low 16S rRNA gene sequence identities (<91%) and low average nucleotide identity values (<70%) to the closest validly described species, and belonged to a novel-family-level lineage within the order Rhodospirillales of Alphaproteobacteria. Strain TMPK1T exhibited small cell sizes (0.08–0.23 μm3) and had a high cyclopropane fatty acid content (>13%), and these characteristics were differentiated from other Rhodospirillales bacteria. A comprehensive habitability search using amplicon datasets suggested that TMPK1T and its close relatives are mainly distributed in soil and plant-associated environments. Based on these results, we propose that strain TMPK1T represents a novel genus and species named Roseiterribacter gracilis gen. nov., sp. nov. (JCM 34627T = KCTC 82790T). We also propose Roseiterribacteraceae fam. nov. to accommodate the genus Roseiterribacter.

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  • Recognition of Mixture Vapors Using SERS Gas Sensor Fabricated by the Sputtering Method 査読 国際共著

    Chen, L; Chen, B; Matsuo, T; Sassa, F; Hayashi, K

    IEEE SENSORS JOURNAL   24 ( 10 )   15773 - 15783   2024年5月   ISSN:1530-437X eISSN:1558-1748

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE Sensors Journal  

    Surface-enhanced Raman scattering (SERS) gas sensing is important in various fields, including environmental monitoring, health diagnosis, and food safety. We used a one-step sputtering method to fabricate an SERS gas sensor to detect and recognize volatile organic aromatic compound (VOAC) vapors using close-set and open-set models. Four pure VOAC vapors (acetophenone, anisole, anethole, and benzaldehyde) and mixtures of the compounds were analyzed using the SERS sensor. The normalized Raman spectra of the target compounds were preprocessed using the principal component analysis (PCA) and discrete wavelet transform (DWT) dimension-reduction methods before analysis. For closed-set recognition, three classical classifiers [naive Bayesian classifier (NBC), support vector machines (SVMs) classifier, and random forest classifier (RFC)] were used to identify three vapor datasets (normalized, PCA-, and DWT-based datasets). The best accuracy (99.4%) was achieved using the PCA-based dataset by SVM classifier. For open-set recognition, the dataset was first imported into a convolutional neural network (CNN) to extract features, and then, three open-set recognition models [Softmax, Openmax, and class anchor clustering (CAC)] were applied. The open-set classifier performances for different open problems were assessed using the dataset openness values of 0.0871, 0.1835, and 0.3333. CAC gave an area under receiver operating characteristic (AUROC) of 0.846 for discriminating between known and unknown samples and an accuracy of 94.5% for classifying the known vapor samples at an openness of 0.0871. The SERS sensor effectively detected vapor-phase compounds and could distinguish between the target compounds in both close-set and open-set recognition scenarios.

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  • Visualization of the Gas Spatial Distribution of the Odor Source by SERS Gas Sensor

    Chen, L; Guo, H; Matsuo, T; Sassa, F; Hayashi, K

    IEEJ TRANSACTIONS ON ELECTRICAL AND ELECTRONIC ENGINEERING   19 ( 5 )   876 - 881   2024年5月   ISSN:1931-4973 eISSN:1931-4981

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    掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEJ Transactions on Electrical and Electronic Engineering  

    Surface-Enhanced Raman Scattering (SERS) technique is used to fabricate the gas sensor, which is developed for the visualization of the spatial distribution of gas evaporating from odor source. The 3 × 3 SERS sensor array is put on the odor source and then scanned by the home-made detection system to obtain the Raman spectra of the odor. The intensities of the characteristic peaks from the collected spectra are used to draw a heatmap graph. After the heatmap graph is processed by the noise reduction, the localization of the odor source can be clearly identified through the resulting graph. © 2024 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.

    DOI: 10.1002/tee.23988

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  • Two-Dimensional SERS Sensor Array for Identifying and Visualizing the Gas Spatial Distributions of Two Distinct Odor Sources

    Chen, L; Guo, H; Wang, C; Chen, B; Sassa, F; Hayashi, K

    SENSORS   24 ( 3 )   790 - 790   2024年2月   ISSN:1424-8220 eISSN:1424-8220

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Sensors  

    The spatial distribution of gas emitted from an odor source provides valuable information regarding the composition, size, and localization of the odor source. Surface-enhanced Raman scattering (SERS) gas sensors exhibit ultra-high sensitivity, molecular specificity, rapid response, and large-area detection. In this paper, a SERS gas sensor array was developed for visualizing the spatial distribution of gas evaporated from benzaldehyde and 4-ethylbenzaldehyde odor sources. The SERS spectra of the gas were collected by scanning the sensor array using an automatic detection system. The non-negative matrix factorization algorithm was employed to extract feature and concentration information at each spot on the sensor array. A heatmap image was generated for visualizing the gas spatial distribution using concentration information. Gaussian fitting was applied to process the image for localizing the odor source. The size of the odor source was estimated using the processed image. Moreover, the spectra of benzaldehyde, 4-ethylbenzaldehyde, and their gas mixture were simultaneously detected using one SERS sensor array. The feature information was recognized using a convolutional neural network with an accuracy of 98.21%. As a result, the benzaldehyde and 4-ethylbenzaldehyde odor sources were identified and visualized. Our research findings have various potential applications, including odor source localization, environmental monitoring, and healthcare.

    DOI: 10.3390/s24030790

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  • Integrating LSPR and SERS for Rapid and Effective Visualization and Identification of Volatile Organic Compounds Distribution

    Wang C., Shingo K., Guo H., Wang Y., Sassa F., Kenshi H.

    Proceedings of IEEE Sensors   2024年   ISSN:19300395 ISBN:9798350363517

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    出版者・発行元:Proceedings of IEEE Sensors  

    Microbial volatile organic compounds (MVOCs) can serve as a diagnostic tool for assessing the respiratory status of microorganisms. Localized surface plasmon resonance (LSPR) sensors are noted for their rapid response and straightforward operation; however, they often struggle to provide specific information about the detected substances and to differentiate between gas types. In contrast, gas sensors utilizing surface-enhanced Raman spectroscopy (SERS) technology offer excellent selectivity and can generate unique 'fingerprint' signals, enabling easy identification and distinction of various gas molecules. Integrating these two technologies promises to enhance the visualization of volatile organic compound distributions both more effectively and expeditiously.

    DOI: 10.1109/SENSORS60989.2024.10785178

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  • An Odor Trace Visualization System Using a Two-Dimensional Backside Scattering Localized Surface Plasmon Resonance Gas Sensor

    Yang, ZY; Sassa, F; Hayashi, K

    SENSORS   23 ( 23 )   9525 - 9525   2023年12月   ISSN:1424-8220 eISSN:1424-8220

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Sensors  

    Odor information fills every corner of our lives yet obtaining its spatiotemporal distribution is a difficult challenge. Localized surface plasmon resonance has shown good sensitivity and a high response/recovery speed in odor sensing and converts chemical information such as odor information into optical information, which can be captured by charge-coupled device cameras. This suggests that the utilization of localized surface plasmon resonance has great potential in two-dimensional odor trace visualization. In this study, we developed a two-dimensional imaging system based on backside scattering from a localized surface plasmon resonance substrate to visualize odor traces, providing an intuitive representation of the spatiotemporal distribution of odor, and evaluated the performance of the system. In comparative experiments, we observed distinct differences between odor traces and disturbances caused by environmental factors in differential images. In addition, we noted changes in intensity at positions corresponding to the odor traces. Furthermore, for indoor experiments, we developed a method of finding the optimal capture time by comparing changes in differential images relative to the shape of the original odor trace. This method is expected to assist in the collection of spatial information of unknown odor traces in future research.

    DOI: 10.3390/s23239525

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  • Spatiotemporal Visualization of Gases Using 2-D LSPR Gas Sensor

    Matsuoka, M; Lingpu, G; Sassa, F; Hayashi, K

    IEEE SENSORS LETTERS   7 ( 9 )   2023年9月   ISSN:2475-1472 eISSN:2475-1472

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    記述言語:その他   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE Sensors Letters  

    Visualization of gaseous chemical substances, such as odors, is very challenging, and few studies are being conducted to address this issue. These odor visualization technologies are expected to be more beneficial for various applications, such as detecting hazardous or human relating gas source localization. Currently, semiconductor gas sensors are commonly used for gas measurements; however, these sensors have disadvantages, such as slow response time and inability to detect multiple types of gases. Furthermore, it is difficult to understand how gases are distributed in space. Thus, we have developed a gas sensor utilizing localized surface plasmon resonance (LSPR). LSPR gas sensors enable real-time, high-speed response and recovery, and by analyzing wavelength information using a hyperspectral camera, gas imaging and identification become possible. In this letter, we conducted experiments on visualizing the spatiotemporal distribution of multiple gases and identifying gas space through the analysis of spectral information using a 2-D LSPR gas sensor and a hyperspectral camera. As a result, we successfully visualized and identified the distribution of each gas in a situation where multiple gases were present by performing principal component analysis analysis on the spectral data obtained from hyperspectral images.

    DOI: 10.1109/LSENS.2023.3301847

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  • Subpixel Patterned LSPR Gas Sensor Array With Using Inkjet Printing Au/Ag Nanoparticle to Enhance the Selectivity

    Jiang, TS; Ye, X; Ge, LP; Guo, H; Sassa, F; Hayashi, K

    IEEE SENSORS LETTERS   7 ( 9 )   1 - 4   2023年9月   ISSN:2475-1472 eISSN:2475-1472

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    記述言語:その他   掲載種別:研究論文(学術雑誌)   出版者・発行元:IEEE Sensors Letters  

    Localized surface plasmon resonance (LSPR) offers rapid gas detection but faces selectivity and fabrication complexity challenges. This letter reports a method of fabricating LSPR gas sensor arrays with pixel patterns by inkjet printing. We developed Au/Ag nanoparticles ink with different compositions to collect spectrum information for accurate gas discrimination. In addition, principal component analysis (PCA) is used to realize the selectivity among four common gases that we often encounter in our daily lives. For the first time, this work demonstrates the fabrication of LSPR gas sensors through inkjet printing. Based on the LSPR phenomenon for gas detection, it shows great potential for rapid, sensitive, and selective gas detection for future research.

    DOI: 10.1109/LSENS.2023.3300820

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  • Development of a microfluidic-based taste sensor using lipid polymer membrane

    Tahara Y., Sassa F., Takigawa R., Kurihara Y.

    Japanese Journal of Applied Physics   62   2023年6月   ISSN:0021-4922 eISSN:1347-4065

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    記述言語:その他   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Journal of Applied Physics  

    This study aims to develop a microfluidic-based taste sensor for detecting time-dependent human taste sensations. Lipid polymer membranes were welded to perforated polycarbonate films with organic solvents to monitor the adsorption and desorption of taste substances to lipid polymer membranes and to physically immobilize lipid polymer membranes to withstand the pressure of a pumped liquid. A polydimethylsiloxane flow channel was bonded chemically to the polycarbonate film with the lipid polymer membrane using 3-aminopropylethoxysilane. A fabricated microfluidic-based taste sensor could measure the membrane potential change with time due to the adsorption and desorption of tannic acid, an astringency substance, onto a lipid polymer membrane. The proposed sensor could be useful as a tool for assessing the time-course changes in human taste.

    DOI: 10.35848/1347-4065/acb4fa

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  • Visualization of Odor Source Localization Realized by SERS Gas Sensor

    Chen L., Guo H., Matsuo T., Sassa F., Hayashi K.

    2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023   2197 - 2200   2023年   ISBN:9784886864352

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    出版者・発行元:2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023  

    Surface-Enhanced Raman Scattering (SERS) technique is used to fabricate the gas sensor, which is developed for the visualization of the odor source localization. The 3 × 3 SERS sensor array is put on the odor source and then scanned by the home-made detection system to obtain the Raman spectra of the odor. The intensities of the characteristic peaks from the collected spectra are used to draw a heatmap graph. After the heatmap graph is processed by the noise reduction, the localization of the odor source can be clearly identified through the resulting graph.

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  • Visualization of Gas Spatiotemporal Distribution Using 2D LSPR Gas Sensor

    Matsuoka M., Lingpu G., Sassa F., Hayashi K.

    2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023   1409 - 1412   2023年   ISBN:9784886864352

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    出版者・発行元:2023 22nd International Conference on Solid-State Sensors, Actuators and Microsystems, Transducers 2023  

    Visualization of gaseous chemical substances such as odors is important technology, and this technology has the potential to be applied to various applications, such as searching for people at disaster sites and identifying hazardous materials. As an alternative technology to olfaction, semiconductor gas sensors are currently used to measure gases, but these sensors have problems such as slow response and slow sensor recovery, and it is also difficult to measure spatial distribution. We utilized, gas sensors using localized surface plasmon resonance (LSPR) gas sensor which have a real-time, fast response and fast recovery, making it possible to perform gas imaging and identification. Here, experiments were conducted to visualize and identify the spatiotemporal distribution of multiple gases using an 2D LSPR gas sensor and a hyperspectral camera.

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  • 2D SERS Gas Sensor for Visualization and Localization of the Odor Source

    Chen, L; Wang, C; Guo, H; Sassa, F; Hayashi, K

    2023 IEEE SENSORS   2023年   ISSN:1930-0395 ISBN:979-8-3503-0387-2 eISSN:2168-9229

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    掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:Proceedings of IEEE Sensors  

    Microbial volatile organic compounds (MVOCs) could be detected and used to understand the metabolic state of microorganisms. The gas sensor developed using the Surface Enhanced Raman Scattering (SERS) technique possesses ultra-high sensitivity and excellent selectivity, which is suitable for detecting low-concentration and complex MVOCs. Here, an odor source is simulated as a microbial community, and a 2D SERS sensor array is utilized to visualize the odor spatial distribution and localize the odor source. The Raman spectra of the odor adsorbed onto the sensor surface are collected after scanning the sensor array. A heatmap image is obtained by using the intensities of the characteristic peaks from the acquired Raman spectra. Thus, the odor spatial distribution is presented, and the localization of the odor source is determined by the image.

    DOI: 10.1109/SENSORS56945.2023.10325081

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  • Low-cost gel-filled microwell array device for screening marine microbial consortium 国際誌

    Duran, C; Zhang, SY; Yang, CY; Falco, ML; Cravo-Laureau, C; Suzuki-Minakuchi, C; Nojiri, H; Duran, R; Sassa, F

    FRONTIERS IN MICROBIOLOGY   13   1031439 - 1031439   2022年12月   ISSN:1664-302X eISSN:1664-302X

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Frontiers in Microbiology  

    In order to exploit the microbes present in the environment for their beneficial resources, effective selection and isolation of microbes from environmental samples is essential. In this study, we fabricated a gel-filled microwell array device using resin for microbial culture. The device has an integrated sealing mechanism that enables high-density isolation based on the culture of microorganisms; the device is easily manageable, facilitating observation using bright-field microscopy. This low-cost device made from polymethyl methacrylate (PMMA)/polyethylene terephthalate (PET) has 900 microwells (600 μm × 600 μm × 700 μm) filled with a microbial culture gel medium in glass slide-sized plates. It also has grooves for maintaining the moisture content in the micro-gel. The partition wall between the wells has a highly hydrophobic coating to inhibit microbial migration to neighboring wells and to prevent exchange of liquid substances. After being hermetically sealed, the device can maintain moisture in the agarose gels for 7 days. In the bacterial culture experiment using this device, environmental bacteria were isolated and cultured in individual wells after 3 days. Moreover, the isolated bacteria were then picked up from wells and re-cultured. This device is effective for the first screening of microorganisms from marine environmental samples.

    DOI: 10.3389/fmicb.2022.1031439

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  • A fully inkjet-printed disposable gas sensor matrix with molecularly imprinted gas-selective materials

    Ge, LP; Ye, X; Yu, ZP; Chen, B; Liu, CJ; Guo, H; Zhang, SY; Sassa, F; Hayashi, K

    NPJ FLEXIBLE ELECTRONICS   6 ( 1 )   2022年12月   eISSN:2397-4621

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    記述言語:その他   掲載種別:研究論文(学術雑誌)   出版者・発行元:npj Flexible Electronics  

    A method was used to fabricate a fully inkjet-printed gas sensor matrix on photographic paper. An electrode matrix comprising 36 interdigital electrodes in a high-density layout that is easy to integrate has been fabricated using a combination of insulating ink and commercial silver ink. Molecular-imprinted polymer (MIP) inks were then made using a simple solution mixing method, and these inks were printed together with carbon black ink on the electrode matrix to complete production of the sensor. Finally, experimental dynamic sensing of volatile organic compounds verifies that for detection of gases corresponding to the MIP template molecules, the MIP layer offers improvements in both sensitivity and selectivity when compared with non-imprinted polymer layers. The matrix can produce a response of more than 20% to 3 ppm propenoic acid gas through adjustment of the printing times for the carbon black layer and the MIP layer.

    DOI: 10.1038/s41528-022-00168-6

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  • 微生物学研究者の為のBioMEMS入門

    佐々 文洋

    環境バイオテクノロジー学会誌   22 ( 1 )   69 - 73   2022年   ISSN:13471856 eISSN:24365041

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    記述言語:日本語   出版者・発行元:NPO法人 環境バイオテクノロジー学会  

    DOI: 10.50963/jenvbio.22.1_69

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  • Sers gas sensors based on multiple polymer films with high design flexibility for gas recognition 国際誌

    Lin Chen, Hao Guo, Fumihiro Sassa, Bin Chen, Kenshi Hayashi

    Sensors   21 ( 16 )   2021年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    The Surface-Enhanced Raman Scattering (SERS) technique is utilized to fabricate sensors for gas detection due to its rapid detection speed and high sensitivity. However, gases with similar molecular structures are difficult to directly discriminate using SERS gas sensors because there are characteristic peak overlaps in the Raman spectra. Here, we proposed a multiple SERS gas sensor matrix via a spin-coating functional polymer to enhance the gas recognition capability. Poly (acrylic acid) (PAA), Poly (methyl methacrylate) (PMMA) and Polydimethylsiloxane (PDMS) were employed to fabricate the polymer film. The high design flexibility of the two-layer film was realized by the layer-by-layer method with 2 one-layer films. The SERS gas sensor coated by different polymer films showed a distinct affinity to target gases. The principle component analysis (PCA) algorithm was used for the further clustering of gas molecules. Three target gases, phenethyl alcohol, acetophenone and anethole, were perfectly discriminated, as the characteristic variables in the response matrix constructed by the combination of gas responses obtained 3 one-layer and 3 two-layer film-coated sensors. This research provides a new SERS sensing approach for recognizing gases with similar molecular structures.

    DOI: 10.3390/s21165546

  • Draft genome sequence of novel filterable rhodospirillales bacterium strain tmpk1, isolated from soil 国際誌

    Ryosuke Nakai, Hiroyuki Kusada, Fumihiro Sassa, Susumu Morigasaki, Hisayoshi Hayashi, Naoki Takaya, Hideyuki Tamaki

    Microbiology Resource Announcements   10 ( 28 )   e0039321   2021年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    We report the draft genome sequence of novel Rhodospirillales bacterium strain TMPK1, isolated from a micropore-filtered soil suspension. This strain has a genome of 4,249,070 bp, comprising 4,151 protein-coding sequences. The genome sequence data further suggest that strain TMPK1 is an alphaproteobacterium capable of carotenoid production.

    DOI: 10.1128/MRA.00393-21

  • Chemiresistor sensor matrix prepared by full-printing processes

    Lingpu Ge, Xiao Ye, Bin Chen, Chuanjun Liu, Hao Guo, Fumihiro Sassa, Kenshi Hayashi

    Flexible and Printed Electronics   6 ( 1 )   015013   2021年3月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    <jats:title>Abstract</jats:title>
    <jats:p>Herein, we report a novel full printing process for fabricating chemiresistor gas sensor matrixes on photographic paper with an inkjet printer. Sensor matrices, which can increase a number of sensors significantly compared to a serial sensor array, were printed on one piece of A4 photographic paper. Each sensor matrix contains 36 interdigital electrodes in an area of less than 11 mm<jats:sup>2</jats:sup>, which greatly improves the density of the sensor. The basic architecture of the sensor matrix is electrodes that row and column intersecting. In order to insulate the row and column electrodes from meeting each other, an insulating layer needs to be fabricated at the point of intersection between the row and column electrodes. The insulation layer was produced by adjusting the number of printing passes and shape of the printing pattern of color pigment ink. Carbon black (CB) was used to form a chemosensitive composite by changing its resistivity with a specific polymer for the preparation of sensing material. In order to make the sensing material can be printed, it is necessary to disperse CB first. CB was dispersed in aqueous solution with sodium dodecyl sulfate added as a surfactant to lower the surface tension, which enabled printing of CB using an inkjet printer. Some polymers have certain adsorption characteristics for gases. According to the different gas properties, the adsorption characteristics are also different. By adding polyethylene glycol polymer to the CB layer, the response to four gases with different properties is improved. Compared with the drop coating, the full-printing sensors not only reduces the production time significantly, but also improves the gas response magnitude to ethanol by about three times. The results demonstrate that the developed sensor can be used as a low cost, disposable, and easily printable chemical sensor.</jats:p>

    DOI: 10.1088/2058-8585/abec19

  • Odor Source Detection with High Speed Multi Gas Sensing Robot System using AuNPs-Fluorescent Molecular coupling Opt-Chemical LSPR Sensor

    Yasuhiro Kusuda, Zhongyuan Yang, Kohei Semasa, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2020-October   2020年10月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    The Localized Surface Plasmon Resonance (LSPR) gas sensor is a promising for mounting on the robot due to an advantage of high-speed response speed and low power consumption. In addition, it is possible to change the characteristic by coating fluorescent dye on the LSPR surface. In this research, we have developed a robot equipped with multi LSPR gas sensor module for the purpose of the identification of gas species.

    DOI: 10.1109/SENSORS47125.2020.9278605

  • 2D LSPR gas sensor with Au/Ag core-shell structure coated by fluorescent dyes

    Kohei Semasa, Fumihiro Sassa, Kenshi Hayashi

    2020 IEEE SENSORS   2020-October   2020年10月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    2D LSPR gas sensor with Au/Ag core-shell structure coated by fluorescent dyes
    LSPR (Localized Surface Plasmon Resonance) based 2D (Two-dimensional) gas sensor system which can measure and identify multi-gases with high spatial resolution have been developed. The gas sensor detects optical changes promoted by the gas on the LSPR substrate with hyperspectral camera. Basically, LSPR gas sensor does not have a molecular selectivity, then the identification of gas species is difficult. To overcome the disadvantage, LSPR substrates based on Au/Ag core-shell structure with spectral gas-discriminating ability through optical interaction were fabricated by spin coating fluorescent dyes. Using the LSPR coupled with fluorescent dyes, this sensor provides rich spectral information about the detecting molecules and can discriminates gas species.

    DOI: 10.1109/SENSORS47125.2020.9278828

  • Ultra-high Sensitive SERS Gas Sensor to detect Geosmin

    Lin Chen, Noriko Shiramatsu, Bin Chen, Fumihiro Sassa, Shoichi Sameshima, Tatsuya Seki, Kenshi Hayashi

    Proceedings of IEEE Sensors   2020-October   2020年10月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Geosmin (GSM) with an earthy odor resembling is often accompanied by 2-methylisoborneol (MIB), which caused the earthy and musty taste of drinking water. To detect trace GSM solution, we designed gas sensor by Surface-enhanced Raman Scattering (SERS) technology which has the capacity of single molecule detection. With our ultra-high sensitivity detection system, response range from 10 ppt to 10 ppb geosmin in ultrapure water was confirmed. Additionally, 100 ppt geosmin in tap water was detectable.

    DOI: 10.1109/SENSORS47125.2020.9278909

  • Microfabricated electrochemical sensing devices 国際誌

    Fumihiro Sassa, Gokul Chandra Biswas, Hiroaki Suzuki

    Lab on a Chip   20 ( 8 )   1358 - 1389   2020年4月

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    記述言語:英語  

    Electrochemistry provides possibilities to realize smart microdevices of the next generation with high functionalities.

    DOI: 10.1039/c9lc01112a

  • 2D LSPR multi gas sensor array with 4-segmented subpixel using Au/Ag core shell structure

    Takaaki Soeda, Zhongyuan Yang, Fumihiro Sassa, Yoichi Tomiura, Kenshi Hayashi

    2019 IEEE SENSORS   2019-October   2019年10月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    2D LSPR multi gas sensor array with 4-segmented subpixel using Au/Ag core shell structure
    LSPR (Localized Surface Plasmon Resonance) based 2D (2 Dimensional) gas imaging sensor system which can capture spatial distribution of each constituent of mixed gas have been developed. The gas image sensor detects the gas promoted optical changes occurred on the LSPR substrate by CCD camera. Basically, LSPR gas sensor does not have a molecular selectivity, then the identification of gas species is difficult. To overcome the disadvantage, pixelated LSPR substrate based on Au/Ag core-shell structure which has different gas response properties is fabricated by photo-induced metal growth by mask-less exposure system using a commercial video projector.

    DOI: 10.1109/SENSORS43011.2019.8956635

  • Multi-layer Filter Structure for Molecular Selective SERS Gas Sensor

    Lin Chen, Bin Chen, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2019-October   2019年10月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Mixture of gas molecules must be accurately detected for gas sensor. However, there are certain difficulties in identifying the type of gas and detecting its concentration by chemical sensors. SERS (Surface Enhanced Raman Scattering) is a promising method for high sensitive gas detection because of its ability of molecule discrimination. However, it is difficult for SERS sensor to identify gases with the similar structure. In this research, we have developed a more selective SERS sensor with molecular filter layers. Molecular filter property is studied by coating a filter polymer film on the SERS substrate. The characteristics of the sensor with two membrane structures were also studied and different filtering properties were obtained.

    DOI: 10.1109/SENSORS43011.2019.8956884

  • Invisible Odor Trace Tracking with LSPR based High Speed Gas Sensor Robot System

    Yasuhiro Kusuda, Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    2019 IEEE SENSORS   2019-October   2019年10月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Invisible Odor Trace Tracking with LSPR based High Speed Gas Sensor Robot System
    Various odor robots have been developed for finding gas sources. However, the response speed of sensors is now a major limit for the promotion of odor robot using chemical substances information. In this research, we have developed a robot equipped with two LSPR (Localized Surface Plasmon Resonance) gas sensor module that can quickly respond to gas molecules at a high speed of above 25 Hz and set a specific algorithm for tracking the invisible odor line on the ground.

    DOI: 10.1109/SENSORS43011.2019.8956599

  • Inkjet-printed Gas Sensor Matrix with Molecularly Imprinted Gas Selective Materials

    Lingpu Ge, Bin Chen, Hiroki Kawano, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2019-October   2019年10月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    This paper introduces a new method to fabricate a large - scale sensor array. By printing electrodes on photographic paper and making insulating layers, 6×6 arrays of sensors were obtained. Different gas selective can be printed in different units to detect different gases. Thus, production of multiple sensors in a small area with low cost was realized. On a piece of A4 photo paper, 30 sensor matrices can be printed at the same time. Each sensor array has 36 sensing units, thus theoretically identifying up to 36 gases. The sensor is suitable to be used in wearable devices to identify human skin gases due to its flexible substrate, low production cost and simple manufacturing process. In this experiment, molecular imprinted polymer (MIP) solution [1], carbon black (C.B.) conductive solution and insulating solution are prepared as ink, which can be used for ink-jet printer printing. This makes the method of developing the sensor more flexible. Compared with the sensor developed by micropipette to drop the MIP solution and C.B. conductive solution, the sensor developed by a printer has better uniformity.

    DOI: 10.1109/SENSORS43011.2019.8956795

  • Flexible Gas Sensor Array Based on Matrix of Molecularly Imprinted Materials and Full Printing Process

    Lingpu Ge, Fumihiro Sassa, Kenshi Hayashi

    2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII   765 - 768   2019年6月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    This paper proposes a flexible gas sensor array system fabricated by full printing process, which can simultaneously monitor a variety of gases. The production of sensors using a low-cost, large-scale, high-speed printing technology throughout the process. Realizing the production of multiple sensors in a small area with low cost. Detection of a variety of gases using a sensor array. The results show that it is possible to make a full-printing gas sensor by acetylene carbon black (Φ20 nm) ink and molecularly imprinted polymer (MIP) ink; 36 sensors are formed on a 3cm-3cm paper; and the gases such as acetic acid and hexanoic acid are well recognized.

    DOI: 10.1109/TRANSDUCERS.2019.8808512

  • Odor Trace Visualization by Mobile Robot Equipped with Two-Dimensional LSPR Gas Sensor

    Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)   1203 - 1206   2019年6月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Odor Trace Visualization by Mobile Robot Equipped with Two-Dimensional LSPR Gas Sensor
    This paper presents a Localized Surface Plasmon Resonance (LSPR) based high speed gas sensor module for gas sensing applications, including visualization of invisible odor trail. Innovative claims include: (1) the use of a double layer film with Au/Ag nanoparticles for gas detection; (2) high speed response characteristic; and (3) visualization of odor trail pattern with high spatial resolution. The results show a significant change in reflection light with ethanol vapor; response speed of 1 second; and a clear image of visualized odor trail of letter "Q" of a 3 mm line width.

    DOI: 10.1109/TRANSDUCERS.2019.8808400

  • Gas Visualization with Photo-Induced 2D Pixel Patterned Au/Ag Core-Shell LSPR Imaging Device by Mask-Less Exposure System

    Takaaki Soeda, Zhongyuan Yang, Fumihiro Sassa, Kenshi Hayashi

    2019 20th International Conference on Solid-State Sensors, Actuators and Microsystems & Eurosensors XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)   1274 - 1276   2019年6月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Gas Visualization with Photo-Induced 2D Pixel Patterned Au/Ag Core-Shell LSPR Imaging Device by Mask-Less Exposure System
    Visualization of the distribution of various gases makes us possible to recognize environmental circumstances, e.g., localization of dangerous chemical sources or human body odorants in the case of disaster scene. Localized surface plasmon resonance (LSPR) can detect various gases with changes of surrounding dielectric constant, and can be used gas sensor with high response / recovery speed and high spatial resolution, i.e., 2 dimensional LSPR gas sensor gas work as a gas image sensor device. The gas image sensor detects the gas distribution occurred on the LSPR substrate by an ordinal image sensor. The general LSPR gas sensor, however, does not have a molecular selectivity, then the identification of gas species is difficult. To overcome such disadvantages, pixelated LSPR substrate based on Au/Ag core-shell structure is fabricated by photo-induced growth by mask-less exposure system using a commercial video projector.

    DOI: 10.1109/TRANSDUCERS.2019.8808591

  • Development of Odor Visualization System with Two-Dimensional LSPR Gas Sensor for Mobile Robot

    Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    ISOEN 2019 - 18th International Symposium on Olfaction and Electronic Nose, Proceedings   2019年5月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Localized Surface Plasmon Resonance (LSPR) based gas sensor is a promising way to break the bottleneck of the sensing speed of traditional semiconductor gas senor for mobile robot use. In this study, we developed a two-dimensional gas visualization system based on LSPR phenomenon with Au/Ag nanoparticles for high speed and high spatial resolution sensing. The 9-hour silver growth on the surface of Au nanoparticles layer has been shown to reduce the influence of transmitted light (noise) on visualization while ensuring sensitivity. An invisible odor trace similar to letter 'U' with a line width of 3 mm was visualized by CCD camera through the LSPR sensor film. The intensity changes of the image every 1 second showed of the developed system's high response speed and spatial resolution.

    DOI: 10.1109/ISOEN.2019.8823230

  • Two dimensional LSPR gas sensor with Au/Ag core-shell structure

    Takaaki Soeda, Zhongyuan Yang, Zheng Xiofan, Fumihiro Sassa, Yoichi Tomiura, Kenshi Hayashi

    ISOEN 2019 - 18th International Symposium on Olfaction and Electronic Nose, Proceedings   2019年5月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    If we can quickly recognize the distribution of dangerous gases, it will be useful in places such as disaster scene. Localized surface plasmon resonance (LSPR) gas sensor is known as a gas sensor with high response / recovery speed and high spatial resolution. However, the general LSPR gas sensor does not have a molecular selectivity and it is difficult to identify the gas species. We made gas selected pixelated LSPR substrate based on Au/Ag core-shell structure by photo-induced growth by exposure system using the photomask.

    DOI: 10.1109/ISOEN.2019.8823375

  • Probe gas sensing system based on reflected light detection from localized surface plasmon resonance

    Hao Guo, Takaaki Soeda, Zhongyuan Yang, Fumihiro Sassa, Kenshi Hayashi

    2019 IEEE International Symposium on Olfaction and Electronic Nose (ISOEN)   2019年5月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Probe gas sensing system based on reflected light detection from localized surface plasmon resonance
    The present study explored a probe type gas detection system which can be used to detect the gas conveniently. The gas sensing mechanism is utilizing Localized Surface Plasmon Resonance (LSPR) sensor which based on the reflected light change caused by the refractive index changes of gas where exposing to the metal nanoparticles layer. The LSPR layer was prepared by vacuum sputtering of AuNPs on a glass substrate, growing in silver growth solution and consequently thermal annealing. An optical system which composed of fiber probe, light source and spectrometer was developed to detect the change of reflected light. It was found that compared with incident light irradiating from metal nanoparticles side, glass side could obtain clearer spectra peak. In addition, a LSPR sensor which had 5 hours silver growth time has the best response to acetic acid gas. This work demonstrated that the reflection detection system has a great potential in gas detecting area.

    DOI: 10.1109/ISOEN.2019.8823157

  • Multiplexed LSPR gas sensor with an arrayed molecularly imprinted Sol-Gel filter

    Shota Shimizu, Liang Shang, Fumihiro Sassa, Kenshi Hayashi

    ISOEN 2019 - 18th International Symposium on Olfaction and Electronic Nose, Proceedings   2019年5月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Detection of volatile organic components (VOCs) is meaningful to agricultural field, bio recognition and so on. In this study, we developed an array type gas sensor to detect VOCs. This sensor is based on localized surface plasmon resonance (LSPR). Molecularly Imprinted Sol-Gels (MISG) were patterned on the surface of Au nano-islands to add molecular selectivity. The substrate is separated into 9 regions on AuNPs by using polyimide tape partitions and spin coating MISG solutions for each region. Multi channels sensor was fabricated with this substrate after this process. The sensor's sensitives were compared for each channel. The result indicated that the sensitivity of target gas channel was higher than into others.

    DOI: 10.1109/ISOEN.2019.8823275

  • Visualization of odor space and quality

    Fumihiro Sassa, Chuanjun Liu, Kenshi Hayashi

    Chemical, Gas, and Biosensors for Internet of Things and Related Applications   253 - 269   2019年1月

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    記述言語:その他  

    Our living environment is surrounded by a variety of odors. The visualized detection of odorant molecules may explore many new applications that cannot be realized by conventional sensors. This chapter introduces some novel sensing technologies that can be used to visualize both the odor space and odor quality. Fluorescence imaging sensors are developed to record the shape of odor sources and the spatiotemporal distribution of odor flows. Multispectral imaging-based odor visualization shows power in the structure-related discrimination of different odorant molecules. Localized surface plasmon resonance (LSPR) sensors based on metal nanoparticles show advantages in high-speed response and recovery in gas or vapor sensing. A sensor robot based on the LSPR sensors is developed to visualize the odor information from on-ground odor sources. In addition, data analysis based on physicochemical parameters of odorant molecules is carried out to demonstrate the difference of odor quality by using network-graph techniques.

    DOI: 10.1016/B978-0-12-815409-0.00018-8

  • An Odor Visualization Film Based on Multi Colors Fluorescent Microbeads and Single Color Fluorescent Multi Microbeads

    Wu Shuanghong, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2018-October   2018年12月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    The microbeads shape sensor film was developed in this work combines fluorescent dye agents whose fluorescent intensity can be influenced in touch of a specific odor, and Molecular Imprinting Polymer. Like photographic films, the fluorescent dye microbeads film can visualize the odor gas diffusion with the CCD camera. To enhance the fluorescence intensity of Quinine Sulfate increases in the water environment, hydrogel was applied in the film. For developing multi-odor sensors, we made four kinds of fluorescent microbeads to test whether the interaction among fluorescent dyes happened. It turned out microbeads structure successfully remained characters of every fluorescent dye.

    DOI: 10.1109/ICSENS.2018.8589830

  • Visualization of Spatial Distribution of on Ground Gas Sources with LSPR based 1D/2D High Speed Gas Sensor Robot System

    Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2018-October   2018年12月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Various odor robots have been developed for gas source localization in plume with specific algorithm. However, sensor response speed is now a major limit for the promotion of odor robot using chemical substances information. In this research, we have fabricated a Localized surface plasmon resonance based gas sensor which can show a quick response to gas molecular at a high speed of above 25Hz. The sensor was mounted on a mobile robot for gas sources detection successfully. Furthermore, a two-dimensional gas sensor based on the same technique was developed for visualization of spatial distribution of gas flow.

    DOI: 10.1109/ICSENS.2018.8589909

  • Flexible Thermal Actuator Film for Monolithic Soft Micro Robot Process

    Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2018-October   2018年12月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Patternable actuator film for monolithic soft micro robot process was developed. The film is consisted from thermal bimorph actuation layer and extra functional layer including driving heater layer and elastic mechanical buffer layer. A cantilever arm actuator fabricated by patterning the film was operated with 2 V applied voltage. Multi actuator device or micro robot can be fabricated without assembling process by appropriate patterning process with this film.

    DOI: 10.1109/ICSENS.2018.8589717

  • A Robot Equipped with a High-Speed LSPR Gas Sensor Module for Collecting Spatial Odor Information from On-Ground Invisible Odor Sources 国際誌

    Zhongyuan Yang, Fumihiro Sassa, Kenshi Hayashi

    ACS Sensors   3 ( 6 )   1174 - 1181   2018年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    A robot equipped with a high-speed LSPR gas sensor module for collecting spatial odor information from on-ground invisible odor sources
    Improving the efficiency of detecting the spatial distribution of gas information with a mobile robot is a great challenge that requires rapid sample collection, which is basically determined by the speed of operation of gas sensors. The present work developed a robot equipped with a highspeed gas sensor module based on localized surface plasmon resonance. The sensor module is designed to sample gases from an on-ground odor source, such as a footprint material or artificial odor marker, via a fine sampling tubing. The tip of the sampling tubing was placed close to the ground to reduce the sampling time and the effect of natural gas diffusion. On-ground ethanol odor sources were detected by the robot at high resolution (i.e., 2.5 cm when the robot moved at 10 cm/s), and the reading of gas information was demonstrated experimentally. This work may help in the development of environmental sensing robots, such as the development of odor source mapping and multirobot systems with pheromone tracing.

    DOI: 10.1021/acssensors.8b00214

  • Molecular imprinting technique in putrescine visualized detection

    Xiaoguang Ying, Hiro Taka Yoshioka, Chuanjun Liu, Fumihiro Sassa, Kenshi Hayashi

    Sensors and Actuators, B: Chemical   258   870 - 880   2018年4月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    This work is an exploration into visualizing measurement of putrescine specific adsorption by photographing colorized molecule imprinting chromogenic hydrogel. Membranes are prepared with imitate templates 1,4-butylene glycol, adipic acid or succinic acid, respectively and ninhydrin is used as chromogenic agent for target molecule putrescine. The adsorbing concentration on MIP is reflected in the form of visible violet-colored stain differed in shape and shade, which are recorded by hyper spectral camera and proceeded into intuitive 3D isohypse surfaces plot. By quantifying the height of surface peaks, imprinting efficiency is estimated in accordance with polyvinyl alcohol concentration and crosslinking degree. The imprinting efficiency of three imitate molecule templates is also discussed.

    DOI: 10.1016/j.snb.2017.11.128

  • Odorants measurement using hyperspectral imaging and PVC film including multi fluorescent probes

    Hiro-Taka Yoshioka, Shota Ueno, Sassa Fumihiro, Kenshi Hayashi

    2017 IEEE SENSORS   2017-December   1 - 3   2017年12月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Odorants measurement using hyperspectral imaging and PVC film including multi fluorescent probes
    Odor imaging sensor was developed with odorants sensing mechanism based on the complicated fluorescence interactions between the multi-fluorescent-probes and odorants. In this research, poly vinyl chloride (PVC) films including various fluorescent probe were developed, and fluorescence properties of the film were investigated. Using the multi fluorescent probe film, fluorescence intensity change spectrum to various odorants was measured, and odorants could be clustered by their chemical structure by multi-variate analyses of hyper spectra images.

    DOI: 10.1109/ICSENS.2017.8234328

  • Photo-tunable molecular recognizing smart material for gas sensing

    Keigo Nakanishi, Fumihiro Sassa, Kenshi Hayashi

    TRANSDUCERS 2017 - 19th International Conference on Solid-State Sensors, Actuators and Microsystems   1376 - 1379   2017年7月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    We developed a dynamic photo-tunable gas adsorbent based on smart (photo sensitive) material and molecularly imprinted polymer (MIP) technology [1]. Gas adsorption property of the material, mixture of photochromic materials and polymethyl methacrylate (PMMA), can be controlled reversible and continuously by irradiation of with light different wavelength. As a result, gas sensor which is composed of a quartz crystal microbalance (QCM) coated with the developed adsorbent was fabricated. This sensor system can detect a certain gas molecule corresponding to the adsorbent property from gas mixture with only one sensor node.

    DOI: 10.1109/TRANSDUCERS.2017.7994313

  • Review of Microfluidic Devices for On-Chip Chemical Sensing

    TAKAHIRO WATANABE, FUMIHIRO SASSA, YOSHITAKA YOSHIZUMI, HIROAKI SUZUKI

    Electronics and Communications in Japan   100 ( 4 )   25 - 32   2017年4月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    Review of Microfluidic Devices for On-Chip Chemical Sensing
    Microfluidic techniques can be a basis to realize user-friendly microanalytical devices of high performance. Required operations include injection of solutions to reaction chambers, volume measurement, and mixing of solutions. For this purpose, the use of surface tension is attractive. In hydrophobic flow channels, solutions can be moved stably in the form of plugs. Otherwise, solutions can be transported by capillary action in a hydrophilic flow channel and stopped at a hydrophobic valve. The valve can be opened autonomously by switching the mixed potential by wetting a zinc electrode formed in a controlling flow channel. In this review paper, we introduce some of our microfluidic devices particularly focusing on devices that work based on surface tension.

    DOI: 10.1002/ecj.11944

  • Formation of oriented metal nanostructures by polarized light irradiation for optical sensing

    Masashi Watanabe, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2017年1月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Highly sensitive optical sensing of molecules can be achieved by using localized surface plasmon generated at metal nanostructures, such as SERS-based sensing. We fabricated SERS-active silver nanostructures by using polarized light irradiation, and evaluated their response properties to rhodamine 6G. In this paper, it is shown that strong Raman signals of rhodamine 6G and large variation in optical transmission have been obtained. Especially, the transmission spectra of the silver nanostructures grown under the irradiation of polarized light showed unique polarizing properties derived from different modes of localized surface plasmons, which would be useful in smart optical sensing.

    DOI: 10.1109/ICSENS.2016.7808850

  • Raman enhanced structure with reconfigured molecularly-imprinted-polymer for gas deteciton

    Satoshi Araki, Masashi Watanabe, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2017年1月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Various devices are developed to obtain information of odor for crisis evasion in dangerous situation. However, the improvement of sensing methodology is lagging. Therefore, some novel odor sensors with high sensitivity, selectivity and short response time are required. Gas detection based on surface enhanced Raman scattering (SERS) is a promising technology to realize such sensor. We developed a sandwich structured SERS substrate with an organic layer, which was placed between an Au thin layer and a gold nano particles (AuNPs) layer. Furthermore, the organic layer was reconfigured to molecularly imprinted polymer (MIP) for selective gas detection. Raman spectrum obtained with a MIP-SERS substrate shows the appearance of peak based on 2-phenylethanol that is targeted gas molecule. Compared with non-imprinted polymer (NIP), MIP substrate showed stronger SERS signals.

    DOI: 10.1109/ICSENS.2016.7808604

  • Gas selective chemiresistor composed of molecularly imprinted polymer composit ink

    Sho Shinohara, Fumihiro Sassa, Kenshi Hayashi

    Proceedings of IEEE Sensors   2017年1月

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    記述言語:その他   掲載種別:研究論文(その他学術会議資料等)  

    Gas sensor with high molecular selectivity is highly demanded in many fields of industry or disaster relief. Molecularly imprinted polymer (MIP) can recognize target gas by specific adsorption for template molecule. In this study, a novel chemiresistor, gas sensor which combined with MIP and conductive nanoparticles has been developed. The gases were distinguished based on molecularly structure by MIP. If gas molecule is absorbed into this polymer, structures and properties of conductive composites are changed. It causes electric resistance changed. It is conceivable that the degree of resistance change is dependent upon the amount of absorption. Moreover, MIP absorbs larger quantity of template molecule than similar gas molecule. So this MIP chemiresistor can be used for measurement of specific target gas based on magnitude of response. Measurement results of gas sensing showed that larger response was produced by MIP chemiresistor for the template molecule than other gas and NIP (non-imprinted polymer) composite. It means that a sensor which could both recognizing molecules and transduce electrical signal simultaneously was successfully developed.

    DOI: 10.1109/ICSENS.2016.7808660

  • Molecularly imprinted filtering adsorbents for odor sensing 国際誌

    Sho Shinohara, You Chiyomaru, Fumihiro Sassa, Chuanjun Liu, Kenshi Hayashi

    Sensors (Switzerland)   16 ( 11 )   1974 - 1974   2016年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Versatile odor sensors that can discriminate among huge numbers of environmental odorants are desired in many fields, including robotics, environmental monitoring, and food production. However, odor sensors comparable to an animal’s nose have not yet been developed. An animal’s olfactory system recognizes odor clusters with specific molecular properties and uses this combinatorial information in odor discrimination. This suggests that measurement and clustering of odor molecular properties (e.g., polarity, size) using an artificial sensor is a promising approach to odor sensing. Here, adsorbents composed of composite materials with molecular recognition properties were developed for odor sensing. The selectivity of the sensor depends on the adsorbent materials, so specific polymeric materials with particular solubility parameters were chosen to adsorb odorants with various properties. The adsorption properties of the adsorbents could be modified by mixing adsorbent materials. Moreover, a novel molecularly imprinted filtering adsorbent (MIFA), composed of an adsorbent substrate covered with a molecularly imprinted polymer (MIP) layer, was developed to improve the odor molecular recognition ability. The combination of the adsorbent and MIP layer provided a higher specificity toward target molecules. The MIFA thus provides a useful technique for the design and control of adsorbents with adsorption properties specific to particular odor molecules.

    DOI: 10.3390/s16111974

  • Microfluidic Separation of Redox Reactions for Coulometry Based on Metallization at the Mixed Potential 国際誌

    Kazuhiro Ikemoto, Takafumi Seki, Shohei Kimura, Yui Nakaoka, Shinnosuke Tsuchiya, Fumihiro Sassa, Masatoshi Yokokawa, Hiroaki Suzuki

    Analytical Chemistry   88 ( 19 )   9427 - 9434   2016年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Microfluidic Separation of Redox Reactions for Coulometry Based on Metallization at the Mixed Potential
    Coulometric detection of an analyte in a solution at nanoliter scale was conducted by having redox reactions proceed simultaneously on a platinum electrode. The analyte was oxidized on a part of the electrode in one flow channel and silver was deposited on an array of circular microelectrodes formed in another flow channel at a mixed potential. Coulometric determination of the deposited silver showed a steep change in the generated charge as a result of the complete oxidation of silver. The short measurement time after the start of the coulometry suppressed the increase in background charge, resulting in significant lowering of the detection limit. The lower detection limit for H O was 30 nM (3σ). To improve selectivity and minimize the influence of coexisting interferents, the shifting of the mixed potential, application of a permselective membrane, and electrochemical elimination of the interferents were effective modifications. 2 2

    DOI: 10.1021/acs.analchem.6b01234

  • Electrochemical Bubble-Based Bidirectional Microfluidic Transport

    Hirotaka Obata, Tomoaki Kuji, Kenichi Kojima, Fumihiro Sassa, Masatoshi Yokokawa, Kazuhiro Takekoshi, Hiroaki Suzuki

    ACS Sensors   1 ( 2 )   190 - 196   2016年2月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    Electrochemical Bubble-Based Bidirectional Microfluidic Transport
    With the aim of application to biochemical analyses, efficient bidirectional microfluidic transport was achieved through the reversible electrochemical production and shrinkage of hydrogen bubbles. A three-electrode system with a platinum black working electrode, a Ag/AgCl reference electrode, and a platinum auxiliary electrode was incorporated into a poly(dimethylsiloxane) structure containing the necessary flow channels and compartments. The influence of the electrode and flow channel structures on the operation of the system was investigated. The production and shrinkage of bubbles was achieved by applying appropriate potentials to the working electrode, which minimized the influence of spontaneous shrinkage resulting from the oxidizing effect of dissolved oxygen. Device performance depended on the structure of the working electrode, meaning that further optimization will be necessary. The device was shown to withdraw solution through a minimally invasive needle and to process liquid plugs in a microfluidic system.

    DOI: 10.1021/acssensors.5b00059

  • Monolithically integrated MEMS mirror array with low electrical interference in wavelength-selective switches

    Tomomi Sakata, Fumihiro Sassa, Mitsuo Usui, Junichi Kodate, Hiromu Ishii, Katsuyuki Machida, Yoshito Jin

    Precision Engineering   37 ( 4 )   897 - 901   2013年10月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    This paper describes the fabrication of a microelectromechanical-system (MEMS) mirror array for a wavelength-selective switch (WSS). The MEMS mirror array, in which a lot of closely spaced adjacent mirrors are electrostatically operated, consists of a MEMS mirrors and a mirror-drive electrodes. In order to reduce electrical interference, comb-shaped ground walls with a high aspect ratio of about 20 are monolithically integrated with the MEMS mirror chip. Further, U-shaped gold electroplating walls are formed in the mirror-drive electrode chip. With these walls, each MEMS mirror successfully operates with low electrical interference. © 2013 Elsevier Inc. All rights reserved.

    DOI: 10.1016/j.precisioneng.2013.05.008

  • Droplet-based microfluidic sensing system for rapid fish freshness determination

    Daisuke Itoh, Fumihiro Sassa, Taiji Nishi, Yoko Kani, Masakazu Murata, Hiroaki Suzuki

    Sensors and Actuators B: Chemical   171-172   619 - 626   2012年8月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    Droplet-based microfluidic sensing system for rapid fish freshness determination
    A microfluidic device was constructed for on-site determination of fish freshness by using adenosine-5′-triphosphate (ATP) concentration as an indicator of freshness. In the device, extracts from fish and reagent solutions were processed in the form of droplets separated by air. The volumes of the droplets of the extract solution, a solution containing enzyme substrates, and a washing buffer solution were measured in branched flow channels. To simplify the structure and procedure for mixing solutions, a wider portion was formed in one flow channel to merge the droplets. A row of droplets was ejected from each of three branched flow channels, merged in the wider portion, and transported to a sensing region located downstream. ATP was detected using two enzymatic reactions involving glycerol kinase (GK) and glycerol-3-phosphate oxidase (G3PO). A linear relationship between the generated current and ATP concentration was confirmed, and ATP detection from jack mackerel extracts was carried out. A distinct change in the current was observed with the fresh extracts as in the case of standard solutions. The obtained data correlated well with those obtained by high-performance liquid chromatography (HPLC). © 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.snb.2012.05.043

  • Miniaturized shape memory alloy pumps for stepping microfluidic transport

    Fumihiro Sassa, Yazan Al-Zain, Takahiro Ginoza, Shuichi Miyazaki, Hiroaki Suzuki

    Sensors and Actuators B: Chemical   165 ( 1 )   157 - 163   2012年4月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    Miniaturized shape memory alloy pumps for stepping microfluidic transport
    A shape memory alloy (SMA) actuator and a polydimethylsiloxane (PDMS) elastic tube were used to realize a simple pump. A liquid plug in a flow channel could be moved forward and backward reversibly by exploiting the shape memory properties of the actuator. Two SMA sheets were used to create a peristaltic pump capable of moving a solution forward and backward over a long distance. The stepping transport caused by applying pulses of electric power facilitated the adjustment of the plug's position. Manipulations such as volume measurement and the merging of two plugs were demonstrated using a microfluidic device with a T-junction. © 2012 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.snb.2011.12.085

  • Coulometric Detection of Components in Liquid Plugs by Microfabricated Flow Channel and Electrode Structures 国際誌

    Fumihiro Sassa, Hind Laghzali, Junji Fukuda, Hiroaki Suzuki

    Analytical Chemistry   82 ( 20 )   8725 - 8732   2010年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Coulometric detection of components in liquid plugs by microfabricated flow channel and electrode structures
    Coulometry has been demonstrated to be effective for determining the analyte in a liquid plug on the nanoliter-scale confined in a flow channel. A plug prepared in a rhombus structure of an auxiliary flow channel was placed on a thin-film three-electrode system, and hydrogen peroxide was detected as a model analyte. Under a fixed potential, the current decayed rapidly, particularly in shallow flow channels, thus making reproducible amperometric detection difficult. On the other hand, the increasing charge during coulometry facilitated the measurements. A constricted flow channel structure with an array of platinum strips for the working electrode was effective at efficiently consuming the analyte to improve the sensitivity and lower the detection limit. Compared to the case of a single short working electrode with the same area, a 4-fold increase in sensitivity was observed for the best combination of flow channel height and interstrip distance. With an increase in the generated current while maintaining the background at a low level, the detection limit was lowered from 1.3 μM to 410 nM using working electrodes with the same area. Furthermore, the processing of solutions containing l-glutamate or l-glutamate oxidase and the detection of l-glutamate were demonstrated. © 2010 American Chemical Society.

    DOI: 10.1021/ac102289a

  • Engineering of capillary-like structures in tissue constructs by electrochemical detachment of cells 国際誌

    Yuki Seto, Rina Inaba, Tomoaki Okuyama, Fumihiro Sassa, Hiroaki Suzuki, Junji Fukuda

    Biomaterials   31 ( 8 )   2209 - 2215   2010年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Engineering of capillary-like structures in tissue constructs by electrochemical detachment of cells
    A major challenge in the development of functional thick tissues is the formation of vascular networks for oxygen and nutrient supply throughout the engineered tissue constructs. This study describes an electrochemical approach for fabrication of capillary-like structures, precisely aligned within micrometer distances, whose internal surfaces are covered with vascular endothelial cells. In this approach, an oligopeptide containing a cell adhesion domain (RGD) in the center and cysteine residues at both ends was designed. Cysteine has a thiol group that adsorbs onto a gold surface via a gold-thiolate bond. The cells attached to the gold surface via the oligopeptide were readily and noninvasively detached by applying a negative electrical potential and cleaving the gold-thiolate bond. This approach was applicable not only for a flat surface but also for various configurations, including cylindrical structures. By applying this approach to thin gold rods aligned in a spatially controlled manner in a perfusion culture device, human umbilical vein endothelial cells (HUVECs) were transferred onto the internal surface of capillary structures in collagen gel. In the subsequent perfusion culture, the HUVECs grew into the collagen gel and formed luminal structures, thereby forming vascular networks in vitro. © 2009 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.biomaterials.2009.11.104

  • Preparation of coculture system with three extracellular matrices using capillary force lithography and layer-by-layer deposition

    Shintaro Takahashi, Hironori Yamazoe, Fumihiro Sassa, Hiroaki Suzuki, Junji Fukuda

    Journal of Bioscience and Bioengineering   108 ( 6 )   544 - 550   2009年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Micropatterned cocultures were fabricated with 3 extracellular matrices, hyaluronic acid (HA), fibronectin, and collagen. The feature of the fabrication processes is to avoid the use of potentially cytotoxic materials and utilize capillary force of the solution and interactions between the extracellular matrix components. The coculture system can be used to investigate the effects of heterocellular interactions on cellular fate. Direct heterocellular connections between hepatocytes and fibroblasts were visualized by the transcellular diffusion of fluorescein in this coculture system. The interactions between hepatocytes and fibroblasts were crucial for the maintenance of albumin synthesis by hepatocytes. The coculture system was also beneficial for investigating the effects of cell-cell interactions on the induction of embryonic stem (ES) cell differentiation. In cocultures grown in a sea-island pattern, ES cells formed isolated colonies surrounded by PA6 cells and differentiated into neurons with branched neurites that extended from the colonies. This versatile and biocompatible coculture system could potentially be a powerful tool for investigating cell-cell interaction and for tissue engineering applications. © 2009 The Society for Biotechnology, Japan.

    DOI: 10.1016/j.jbiosc.2009.06.013

  • Biochip with integrated pumps for plug-based sequential exchange of solutions

    Yoshifumi Shimizu, Atsushi Takashima, Wataru Satoh, Fumihiro Sassa, Junji Fukuda, Hiroaki Suzuki

    Sensors and Actuators B: Chemical   140 ( 2 )   649 - 655   2009年7月

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    記述言語:その他   掲載種別:研究論文(学術雑誌)  

    Biochip with integrated pumps for plug-based sequential exchange of solutions
    A novel method for exchanging solutions used in biochemical analyses and a device to carry out the exchange are proposed. An array of plugs formed using six injectors was transported in a microflow channel using a main pump located at one end of the main flow channel. The injectors and main pump were operated on the basis of the change in volume caused by the electrolysis of water. Bubbles were produced from working electrodes; these bubbles caused a diaphragm placed below the injectors to inflate and occlude the inlet of the solution reservoir. Increase in the number of bubbles caused the reservoir to inject the solution into the main flow channel in the form of a plug. Each plug was individually transported downstream to the sensing area by the main pump, which was operated in a similar manner to the injector. The device was used for the detection of a tumor marker, α-fetoprotein (AFP). Plugs of necessary solutions were individually transported to the sensing area with immobilized primary antibodies to allow antigen-antibody binding, cleaning, and detection. The fluorescence intensity from the antibodies showed clear dependence on the concentration of AFP. The immobilization of antibodies could also be carried out on-chip. © 2009 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.snb.2009.04.048

  • Microprocessing of liquid plugs for bio/chemical analyses 国際誌

    Fumihiro Sassa, Junji Fukuda, Hiroaki Suzuki

    Analytical Chemistry   80 ( 16 )   6206 - 6213   2008年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    A microfluidic device and operation to handle liquid plugs for biochemical analyses were developed for efficient handling of plugs of many solutions. A major part of the device was a T-junction consisting of a main flow channel and a handling flow channel. Unit operations including attachment of plugs, division of a plug, sorting of plugs, and formation of plugs of various lengths enabled controlled sequential reactions in a microflow channel. Rapid mixing could easily be achieved by moving a plug formed by merging two plugs back and forth. The device could be used for efficient characterization of performance in bio/chemical sensing. In experiments using L-glutamate oxidase, plugs containing an enzyme or a substrate were formed, mixed sequentially, and the intensity of fluorescence from plugs of different concentrations of L-glutamate or pHs could be measured simultaneously. Cross-contamination of plugs by neighboring plugs poses a problem in using the same flow channel repeatedly. However, the influence could be minimized by using a cleansing plug placed between them in a sufficiently hydrophobic flow channel and by processing the plugs at a low velocity. The device can be a critical component for microprocessing in various bio/chemical analyses. © 2008 American Chemical Society.

    DOI: 10.1021/ac800492v

  • Electrochemical techniques for microfluidic applications 国際誌

    Fumihiro Sassa, Katsuya Morimoto, Wataru Satoh, Hiroaki Suzuki

    Electrophoresis   29 ( 9 )   1787 - 1800   2008年5月

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    記述言語:英語  

    Eletrochemical principles provide key techniques to promote the construction of bio/chemical microsystems of the next generation. There is a wealth of technology for the microfabrication of bio/chemical sensors. In addition, microfluidic transport in a network of flow channels, pH regulation, and automatic switching can be realized by electro-chemical principles. Since the basic components of the devices are electrode patterns, the integration of different components is easily achieved. With these techniques, bio/chemical assays that require the exchange of solutions can be conducted on a chip. Furthermore, autonomous microanalysis systems that can carry out necessary procedures are beginning to be realized. In this article, techniques developed in our group will be comprehensively introduced. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

    DOI: 10.1002/elps.200700581

▼全件表示

書籍等出版物

  • Chemical, Gas, and Biosensors for Internet of Things and Related Applications Section 17: Visualization of odor space and quality

    Fumihiro Sassa, Chuanjun Liu, Kenshi Hayashi(担当:共著)

    Elsevier  2019年6月 

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    記述言語:英語   著書種別:学術書

講演・口頭発表等

  • Kinetic electronics based soft micro robots toward bio/chemical application 招待 国際会議

    Fumihiro Sassa

    35th 2024 International Symposium on Micro-NanoMechatronics and Human Science  2024年11月 

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    開催年月日: 2024年11月

    記述言語:英語   会議種別:口頭発表(招待・特別)  

  • ガス応答スマートマテリアルによるVOCセンシング 招待

    佐々 文洋, 林 健司

    バイオメカニクス研究センター&エレクトロニクス実装学会九州支部合同研究会  2017年3月 

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    開催年月日: 2017年3月

    記述言語:日本語   会議種別:口頭発表(招待・特別)  

    開催地:九州大学 伊都キャンパス   国名:日本国  

  • Programmable droplet processing device for bio/chemical analysis 招待 国際会議

    Fumihiro Sassa, Kenshi Hayashi, Hiroaki Suzuki

    EMN meeting Droplets2016  2016年5月 

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    開催年月日: 2016年5月

    記述言語:英語   会議種別:口頭発表(招待・特別)  

    開催地:NH Collection Aranzazu, San Sebastián, SPAIN   国名:日本国  

    Micro Total Analysis system (μ-TAS) which is consisted from micro components such as micropump, micro chemical sensor, and microflowchannel is a small chemical analysis device. [1] It can be installed into many place, due to its small size and can be promising technology for many purposes such as environmental monitoring or preventive health care. Most of μTAS are using continuous flow system, to mix chemical reagents and samples at its microflow channel network. With this way it is difficult to done several different method chemical analysis with one chip. We developed programmable μTAS which can be carried out many analysis procedure by using droplets in micro flow channel. This device are consisted from three components. First, we developed a unit operations of droplet handling for mixing reagents. The device is consisted from flow channel with a T-junction and two micro pumps. [2] Fig.1(1) shows the droplet exchange sequence. Programmable mixing procedures were done by combination of unit operations which were shown in Fig.2 in this device. Secondly, micropump to mobilize droplet and carrier gas is developed. [3] The pump structure was shown in Fig.1(2). Elastic tubing were inserted into patterned shape memory alloy (SMA) sheet. The sheet was connected to the computer controlled electric power source to elevate the temperature by joule heating. Two unit of this SMA-elastic tube structure were connected in series to make peristaltic pump. Then, we developed electrochemical sensor for droplet detection. [4] Coulometry is a promising way for detection of small volume sample. This method require accurate volume measurement to detection accuracy. We made droplet volume measure microfluidic structure which is using surface tension of droplet shown in Fig.3(3).The accuracy of volume measurements by this structure is 2 % in relative standard deviation at 200 nl droplet. Finally, we integrated those three components to a chip. This device can be carried out programmable chemical mixing and coulometric detection by computer control, although the weight of the chip including all the components was only 1.5 g.

  • 2D LSPR gas sensor with Au/Ag core-shell structure coated by fluorescent dyes 国際会議

    Kohei Semasa, Fumihiro Sassa, Kenshi Hayashi

    IEEE Sensors2020  2020年10月 

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    開催年月日: 2020年10月

    記述言語:英語  

    国名:その他  

  • Ultra-high Sensitive SERS Gas Sensor to detect Geosmin 国際会議

    Lin Chen, Noriko Shiramatsu, Bin Chen, Fumihiro Sassa, Shoichi Sameshima, Tatsuya Seki, Kenshi Hayashi

    IEEE Sensors2020  2020年10月 

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    開催年月日: 2020年10月

    記述言語:英語  

    国名:その他  

  • Odor Source Detection with High Speed Multi Gas Sensing Robot System using AuNPs-Fluorescent Molecular coupling Opt-Chemical LSPR Sensor 国際会議

    Yasuhiro Kusuda, Zhongyuan Yang, Kohei Semasa, Fumihiro Sassa, Kenshi Hayashi

    IEEE Sensors2020  2020年10月 

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    開催年月日: 2020年10月

    記述言語:英語  

    国名:その他  

  • 2D LSPR multi gas sensor array with 4-segmented subpixel using Au/Ag core shell structure

    Takaaki Soeda, Zhongyuan Yang, Fumihiro Sassa, Yoichi Tomiura, Kenshi Hayashi

    18th IEEE Sensors, SENSORS 2019  2019年10月 

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    開催年月日: 2019年10月

    記述言語:英語  

    開催地:Montreal   国名:カナダ  

    LSPR (Localized Surface Plasmon Resonance) based 2D (2 Dimensional) gas imaging sensor system which can capture spatial distribution of each constituent of mixed gas have been developed. The gas image sensor detects the gas promoted optical changes occurred on the LSPR substrate by CCD camera. Basically, LSPR gas sensor does not have a molecular selectivity, then the identification of gas species is difficult. To overcome the disadvantage, pixelated LSPR substrate based on Au/Ag core-shell structure which has different gas response properties is fabricated by photo-induced metal growth by mask-less exposure system using a commercial video projector.

  • Multi-layer Filter Structure for Molecular Selective SERS Gas Sensor

    Lin Chen, Bin Chen, Fumihiro Sassa, Kenshi Hayashi

    18th IEEE Sensors, SENSORS 2019  2019年10月 

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    開催年月日: 2019年10月

    記述言語:英語  

    開催地:Montreal   国名:カナダ  

    Mixture of gas molecules must be accurately detected for gas sensor. However, there are certain difficulties in identifying the type of gas and detecting its concentration by chemical sensors. SERS (Surface Enhanced Raman Scattering) is a promising method for high sensitive gas detection because of its ability of molecule discrimination. However, it is difficult for SERS sensor to identify gases with the similar structure. In this research, we have developed a more selective SERS sensor with molecular filter layers. Molecular filter property is studied by coating a filter polymer film on the SERS substrate. The characteristics of the sensor with two membrane structures were also studied and different filtering properties were obtained.

  • Invisible Odor Trace Tracking with LSPR based High Speed Gas Sensor Robot System

    Yasuhiro Kusuda, Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    18th IEEE Sensors, SENSORS 2019  2019年10月 

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    開催年月日: 2019年10月

    記述言語:英語  

    開催地:Montreal   国名:カナダ  

    Various odor robots have been developed for finding gas sources. However, the response speed of sensors is now a major limit for the promotion of odor robot using chemical substances information. In this research, we have developed a robot equipped with two LSPR (Localized Surface Plasmon Resonance) gas sensor module that can quickly respond to gas molecules at a high speed of above 25 Hz and set a specific algorithm for tracking the invisible odor line on the ground.

  • Inkjet-printed Gas Sensor Matrix with Molecularly Imprinted Gas Selective Materials

    Lingpu Ge, Bin Chen, Hiroki Kawano, Fumihiro Sassa, Kenshi Hayashi

    18th IEEE Sensors, SENSORS 2019  2019年10月 

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    開催年月日: 2019年10月

    記述言語:英語  

    開催地:Montreal   国名:カナダ  

    This paper introduces a new method to fabricate a large - scale sensor array. By printing electrodes on photographic paper and making insulating layers, 6×6 arrays of sensors were obtained. Different gas selective can be printed in different units to detect different gases. Thus, production of multiple sensors in a small area with low cost was realized. On a piece of A4 photo paper, 30 sensor matrices can be printed at the same time. Each sensor array has 36 sensing units, thus theoretically identifying up to 36 gases. The sensor is suitable to be used in wearable devices to identify human skin gases due to its flexible substrate, low production cost and simple manufacturing process. In this experiment, molecular imprinted polymer (MIP) solution [1], carbon black (C.B.) conductive solution and insulating solution are prepared as ink, which can be used for ink-jet printer printing. This makes the method of developing the sensor more flexible. Compared with the sensor developed by micropipette to drop the MIP solution and C.B. conductive solution, the sensor developed by a printer has better uniformity.

  • Flexible Gas Sensor Array Based on Matrix of Molecularly Imprinted Materials and Full Printing Process

    Lingpu Ge, Fumihiro Sassa, Kenshi Hayashi

    20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII  2019年6月 

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    開催年月日: 2019年6月

    記述言語:英語  

    開催地:Berlin   国名:ドイツ連邦共和国  

    This paper proposes a flexible gas sensor array system fabricated by full printing process, which can simultaneously monitor a variety of gases. The production of sensors using a low-cost, large-scale, high-speed printing technology throughout the process. Realizing the production of multiple sensors in a small area with low cost. Detection of a variety of gases using a sensor array. The results show that it is possible to make a full-printing gas sensor by acetylene carbon black (Φ20 nm) ink and molecularly imprinted polymer (MIP) ink; 36 sensors are formed on a 3cm-3cm paper; and the gases such as acetic acid and hexanoic acid are well recognized.

  • Odor Trace Visualization by Mobile Robot Equipped with Two-Dimensional LSPR Gas Sensor

    Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII  2019年6月 

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    開催年月日: 2019年6月

    記述言語:英語  

    開催地:Berlin   国名:ドイツ連邦共和国  

    This paper presents a Localized Surface Plasmon Resonance (LSPR) based high speed gas sensor module for gas sensing applications, including visualization of invisible odor trail. Innovative claims include: (1) the use of a double layer film with Au/Ag nanoparticles for gas detection; (2) high speed response characteristic; and (3) visualization of odor trail pattern with high spatial resolution. The results show a significant change in reflection light with ethanol vapor; response speed of 1 second; and a clear image of visualized odor trail of letter "Q" of a 3 mm line width.

  • Gas Visualization with Photo-Induced 2D Pixel Patterned Au/Ag Core-Shell LSPR Imaging Device by Mask-Less Exposure System

    Takaaki Soeda, Zhongyuan Yang, Fumihiro Sassa, Kenshi Hayashi

    20th International Conference on Solid-State Sensors, Actuators and Microsystems and Eurosensors XXXIII, TRANSDUCERS 2019 and EUROSENSORS XXXIII  2019年6月 

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    開催年月日: 2019年6月

    記述言語:英語  

    開催地:Berlin   国名:ドイツ連邦共和国  

    Visualization of the distribution of various gases makes us possible to recognize environmental circumstances, e.g., localization of dangerous chemical sources or human body odorants in the case of disaster scene. Localized surface plasmon resonance (LSPR) can detect various gases with changes of surrounding dielectric constant, and can be used gas sensor with high response / recovery speed and high spatial resolution, i.e., 2 dimensional LSPR gas sensor gas work as a gas image sensor device. The gas image sensor detects the gas distribution occurred on the LSPR substrate by an ordinal image sensor. The general LSPR gas sensor, however, does not have a molecular selectivity, then the identification of gas species is difficult. To overcome such disadvantages, pixelated LSPR substrate based on Au/Ag core-shell structure is fabricated by photo-induced growth by mask-less exposure system using a commercial video projector.

  • Development of Odor Visualization System with Two-Dimensional LSPR Gas Sensor for Mobile Robot

    Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    18th International Symposium on Olfaction and Electronic Nose, ISOEN 2019  2019年5月 

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    開催年月日: 2019年5月

    記述言語:英語  

    開催地:Fukuoka   国名:日本国  

    Localized Surface Plasmon Resonance (LSPR) based gas sensor is a promising way to break the bottleneck of the sensing speed of traditional semiconductor gas senor for mobile robot use. In this study, we developed a two-dimensional gas visualization system based on LSPR phenomenon with Au/Ag nanoparticles for high speed and high spatial resolution sensing. The 9-hour silver growth on the surface of Au nanoparticles layer has been shown to reduce the influence of transmitted light (noise) on visualization while ensuring sensitivity. An invisible odor trace similar to letter 'U' with a line width of 3 mm was visualized by CCD camera through the LSPR sensor film. The intensity changes of the image every 1 second showed of the developed system's high response speed and spatial resolution.

  • Two dimensional LSPR gas sensor with Au/Ag core-shell structure

    Takaaki Soeda, Zhongyuan Yang, Zheng Xiofan, Fumihiro Sassa, Yoichi Tomiura, Kenshi Hayashi

    18th International Symposium on Olfaction and Electronic Nose, ISOEN 2019  2019年5月 

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    開催年月日: 2019年5月

    記述言語:英語  

    開催地:Fukuoka   国名:日本国  

    If we can quickly recognize the distribution of dangerous gases, it will be useful in places such as disaster scene. Localized surface plasmon resonance (LSPR) gas sensor is known as a gas sensor with high response / recovery speed and high spatial resolution. However, the general LSPR gas sensor does not have a molecular selectivity and it is difficult to identify the gas species. We made gas selected pixelated LSPR substrate based on Au/Ag core-shell structure by photo-induced growth by exposure system using the photomask.

  • Probe gas sensing system based on reflected light detection from localized surface plasmon resonance

    Hao Guo, Takaaki Soeda, Zhongyuan Yang, Fumihiro Sassa, Kenshi Hayashi

    18th International Symposium on Olfaction and Electronic Nose, ISOEN 2019  2019年5月 

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    開催年月日: 2019年5月

    記述言語:英語  

    開催地:Fukuoka   国名:日本国  

    The present study explored a probe type gas detection system which can be used to detect the gas conveniently. The gas sensing mechanism is utilizing Localized Surface Plasmon Resonance (LSPR) sensor which based on the reflected light change caused by the refractive index changes of gas where exposing to the metal nanoparticles layer. The LSPR layer was prepared by vacuum sputtering of AuNPs on a glass substrate, growing in silver growth solution and consequently thermal annealing. An optical system which composed of fiber probe, light source and spectrometer was developed to detect the change of reflected light. It was found that compared with incident light irradiating from metal nanoparticles side, glass side could obtain clearer spectra peak. In addition, a LSPR sensor which had 5 hours silver growth time has the best response to acetic acid gas. This work demonstrated that the reflection detection system has a great potential in gas detecting area.

  • Multiplexed LSPR gas sensor with an arrayed molecularly imprinted Sol-Gel filter

    Shota Shimizu, Liang Shang, Fumihiro Sassa, Kenshi Hayashi

    18th International Symposium on Olfaction and Electronic Nose, ISOEN 2019  2019年5月 

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    開催年月日: 2019年5月

    記述言語:英語  

    開催地:Fukuoka   国名:日本国  

    Detection of volatile organic components (VOCs) is meaningful to agricultural field, bio recognition and so on. In this study, we developed an array type gas sensor to detect VOCs. This sensor is based on localized surface plasmon resonance (LSPR). Molecularly Imprinted Sol-Gels (MISG) were patterned on the surface of Au nano-islands to add molecular selectivity. The substrate is separated into 9 regions on AuNPs by using polyimide tape partitions and spin coating MISG solutions for each region. Multi channels sensor was fabricated with this substrate after this process. The sensor's sensitives were compared for each channel. The result indicated that the sensitivity of target gas channel was higher than into others.

  • An Odor Visualization Film Based on Multi Colors Fluorescent Microbeads and Single Color Fluorescent Multi Microbeads

    Wu Shuanghong, Fumihiro Sassa, Kenshi Hayashi

    17th IEEE SENSORS Conference, SENSORS 2018  2018年12月 

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    開催年月日: 2018年10月

    記述言語:英語  

    開催地:New Delhi   国名:インド  

    The microbeads shape sensor film was developed in this work combines fluorescent dye agents whose fluorescent intensity can be influenced in touch of a specific odor, and Molecular Imprinting Polymer. Like photographic films, the fluorescent dye microbeads film can visualize the odor gas diffusion with the CCD camera. To enhance the fluorescence intensity of Quinine Sulfate increases in the water environment, hydrogel was applied in the film. For developing multi-odor sensors, we made four kinds of fluorescent microbeads to test whether the interaction among fluorescent dyes happened. It turned out microbeads structure successfully remained characters of every fluorescent dye.

  • Visualization of Spatial Distribution of on Ground Gas Sources with LSPR based 1D/2D High Speed Gas Sensor Robot System

    Zhongyuan Yang, Takaaki Soeda, Fumihiro Sassa, Kenshi Hayashi

    17th IEEE SENSORS Conference, SENSORS 2018  2018年12月 

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    開催年月日: 2018年10月

    記述言語:英語  

    開催地:New Delhi   国名:インド  

    Various odor robots have been developed for gas source localization in plume with specific algorithm. However, sensor response speed is now a major limit for the promotion of odor robot using chemical substances information. In this research, we have fabricated a Localized surface plasmon resonance based gas sensor which can show a quick response to gas molecular at a high speed of above 25Hz. The sensor was mounted on a mobile robot for gas sources detection successfully. Furthermore, a two-dimensional gas sensor based on the same technique was developed for visualization of spatial distribution of gas flow.

  • Flexible Thermal Actuator Film for Monolithic Soft Micro Robot Process

    Fumihiro Sassa, Kenshi Hayashi

    17th IEEE SENSORS Conference, SENSORS 2018  2018年12月 

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    開催年月日: 2018年10月

    記述言語:英語  

    開催地:New Delhi   国名:インド  

    Patternable actuator film for monolithic soft micro robot process was developed. The film is consisted from thermal bimorph actuation layer and extra functional layer including driving heater layer and elastic mechanical buffer layer. A cantilever arm actuator fabricated by patterning the film was operated with 2 V applied voltage. Multi actuator device or micro robot can be fabricated without assembling process by appropriate patterning process with this film.

  • Odorants measurement using hyperspectral imaging and PVC film including multi fluorescent probes

    Hiro Taka Yoshioka, Shota Ueno, Fumihiro Sassa, Kenshi Hayashi

    16th IEEE SENSORS Conference, ICSENS 2017  2017年12月 

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    開催年月日: 2017年10月 - 2017年11月

    記述言語:英語  

    開催地:Glasgow   国名:グレートブリテン・北アイルランド連合王国(英国)  

    Odor imaging sensor was developed with odorants sensing mechanism based on the complicated fluorescence interactions between the multi-fluorescent-probes and odorants. In this research, poly vinyl chloride (PVC) films including various fluorescent probe were developed, and fluorescence properties of the film were investigated. Using the multi fluorescent probe film, fluorescence intensity change spectrum to various odorants was measured, and odorants could be clustered by their chemical structure by multi-variate analyses of hyper spectra images.

  • 生物由来揮発性物質測定のためのガス応答スマート材料 招待

    佐々 文洋

    ERATO 研究会  2017年4月 

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    開催年月日: 2017年4月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:筑波大学   国名:日本国  

  • 導電性MIPインクによるプリンタブルケミレジスタガスセンサの開発

    姜 成坤, 佐々 文洋, 林 健司, 篠原 翔

    電気学会全国大会  2017年3月 

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    開催年月日: 2017年3月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:富山大学 五福キャンパス   国名:日本国  

  • 基板上で光成長させた金属ナノ構造のSERS活性評価

    李 景韶, 渡辺 真司, 荒木 聡, 佐々 文洋, 林 健司

    電気学会全国大会  2017年3月 

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    開催年月日: 2017年3月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:富山大学 五福キャンパス   国名:日本国  

  • 分子認識蛍光マイクロビーズによる光学的な植物BVOC情報の測定

    王 皓宇, 商 亮, 吉岡 大貴, 佐々 文洋, 林 健司

    MEとバイオサイバネティックス研究会(MBE)  2017年1月 

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    開催年月日: 2017年1月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:九州大学 病院キャンパス   国名:日本国  

  • 全印刷ガスセンサに向けた MIP 導電性インクによるケミレジスタの開発

    姜 成坤, 篠原 翔, 佐々 文洋, 林 健司

    平成28年度応用物理学会九州支部学術講演会  2016年12月 

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    開催年月日: 2016年12月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:対馬市交流センター   国名:日本国  

  • Gas Responding Chemiresistor with High Selectivity Using Molecularly Imprinted Polymer Composite

    篠原 翔, 佐々 文洋, 林 健司

    平成28年度応用物理学会九州支部学術講演会  2016年12月 

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    開催年月日: 2016年12月

    記述言語:英語   会議種別:口頭発表(一般)  

    開催地:対馬市交流センター   国名:日本国  

  • 高感度 LSPR ガスセンサに向けた金ナノ粒子-色素複合体基板の開発

    中井 雄太郎, 渡邊 真司, 佐々 文洋, 林 健司

    平成28年度応用物理学会九州支部学術講演会  2016年12月 

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    開催年月日: 2016年12月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:対馬市交流センター   国名:日本国  

  • 光極性変化吸着剤によるガス分子選択性の制御

    中西 慶伍, 佐々 文洋, 林 健司

    平成28年度応用物理学会九州支部学術講演会  2016年12月 

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    開催年月日: 2016年12月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:対馬市交流センター   国名:日本国  

  • 蛍光プローブ含有ポリマーフィルムによる匂いの可視化

    吉岡 大貴, 佐々 文洋, 林 健司

    電気学会研究会  2016年11月 

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    開催年月日: 2016年11月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:東京電機大学 東京千住キャンパス   国名:日本国  

  • 生物/化学MEMSによる微小化学センシング 招待

    佐々 文洋

    バイオミメティック工学セミナー  2016年11月 

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    開催年月日: 2016年11月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:静岡大学浜松キャンパス   国名:日本国  

  • Formation of Oriented Metal Nanostructures by Polarized Light Irradiation for Optical Sensing 国際会議

    Masashi Watanabe, Fumihiro Sassa, Kenshi Hayashi

    IEEE SENSORS 2016  2016年11月 

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    開催年月日: 2016年10月 - 2016年11月

    記述言語:英語   会議種別:口頭発表(一般)  

    開催地:Caribe Royale All-Suite Hotel and Convention Center   国名:アメリカ合衆国  

  • Raman Enhanced Structure with Reconfigured Molecularly-Imprinted-Polymer for Gas Deteciton 国際会議

    Satoshi Araki, Masashi Watanabe, Fumihiro Sassa, Kenshi Hayashi

    IEEE SENSORS 2016  2016年10月 

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    開催年月日: 2016年10月 - 2016年11月

    記述言語:英語   会議種別:口頭発表(一般)  

    開催地:Caribe Royale All-Suite Hotel and Convention Center   国名:アメリカ合衆国  

  • Gas Selective Chemiresistor Composed of Molecularly Imprinted Polymer Composit Ink 国際会議

    Sho Shinohara, Fumihiro Sassa, Kenshi Hayashi

    IEEE SENSORS 2016  2016年11月 

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    開催年月日: 2016年10月 - 2016年11月

    記述言語:英語   会議種別:口頭発表(一般)  

    開催地:Caribe Royale All-Suite Hotel and Convention Center   国名:アメリカ合衆国  

  • 蛍光性分子鋳型マイクロビーズを用いた選択的かつ高速な匂い可視化

    篠原 翔, 吉岡 大貴, 佐々 文洋, 林 健司

    第33回「センサ・マイクロマシンと応用システム」シンポジウム  2016年10月 

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    開催年月日: 2016年10月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:平戸文化センター/平戸市未来創造館   国名:日本国  

  • 異方性光成長による金属成長核連結による配向性光学ナノ構造の作製

    渡辺 真司, 佐々 文洋, 林 健司

    第33回「センサ・マイクロマシンと応用システム」シンポジウム  2016年10月 

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    開催年月日: 2016年10月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:平戸文化センター/平戸市未来創造館   国名:日本国  

  • 分子鋳型ポリマーを用いたケミレジスタによるガス応答測定

    篠原 翔, 佐々 文洋, 林 健司

    第33回「センサ・マイクロマシンと応用システム」シンポジウム  2016年10月 

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    開催年月日: 2016年10月

    記述言語:日本語  

    開催地:平戸文化センター/平戸市未来創造館   国名:日本国  

  • 植物 BVOC 検知のための蛍光性 MIP マイクロビーズの開発

    王 皓宇, 吉岡 大貴, 佐々 文洋, 林 健司

    第33回「センサ・マイクロマシンと応用システム」シンポジウム  2016年10月 

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    開催年月日: 2016年10月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:平戸文化センター/平戸市未来創造館   国名:日本国  

  • 自己組織化マップを用いた匂い情報の直感的視覚表現

    森元 章悟, 商 亮, 佐々 文洋, 林 健司

    平成28年度(第69回)電気・情報関係学会九州支部連合大会  2016年9月 

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    開催年月日: 2016年9月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:宮崎大学   国名:日本国  

  • 植物BVOCの可視化のためのMIPマイクロビーズの開発

    王 皓宇, 吉岡 大貴, 佐々 文洋, 林 健司

    平成28年度(第69回)電気・情報関係学会九州支部連合大会  2016年9月 

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    開催年月日: 2016年9月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:宮崎大学   国名:日本国  

  • 匂い物質応答性MIPマイクロビーズによる可逆的匂いイメージング

    上野 翔太, 吉岡 大貴, 佐々 文洋, 林 健司

    平成28年度(第69回)電気・情報関係学会九州支部連合大会  2016年9月 

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    開催年月日: 2016年9月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:宮崎大学   国名:日本国  

  • 基板上で光成長させた金属ナノ構造のSERS活性評価

    李 景韶, 渡辺 真司, 荒木 聡, 佐々 文洋, 林 健司

    平成28年度(第69回)電気・情報関係学会九州支部連合大会  2016年9月 

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    開催年月日: 2016年9月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:宮崎大学   国名:日本国  

  • マルチ蛍光プローブセンサを用いた匂いの可視化

    吉岡 大貴, 佐々 文洋, 林 健司

    第六回次世代センサ研究発表会  2016年9月 

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    開催年月日: 2016年9月

    記述言語:日本語  

    開催地:東京ビッグサイト 東5ホール センサエキスポジャパン2016展示会場内 セミナーE   国名:日本国  

  • 液滴を利用した微小化学分析システム

    佐々 文洋, 林 健司

    平成28年E部門総合研究会  2016年6月 

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    開催年月日: 2016年6月

    記述言語:日本語  

    開催地:金沢市文化ホール   国名:日本国  

  • 光極性変化材料によるガス吸着特性の制御

    中西 慶伍, 山下 誠一, 林 健司, 佐々 文洋

    平成28年E部門総合研究会  2016年6月 

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    開催年月日: 2016年6月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:金沢市文化ホール   国名:日本国  

  • 金ナノ粒子-色素複合体形成に基づくガス応答性の向上

    中井 雄太郎, 渡辺 真司, 吉岡 大貴, 佐々 文洋, 劉 傳軍, 林 健司

    平成28年E部門総合研究会  2016年6月 

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    開催年月日: 2016年6月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:金沢市文化ホール   国名:日本国  

  • AuNPs-MIP composite SERS substrate for selective gas sensing 国際会議

    Satoshi Araki, Masashi Watanabe, Fumihiro Sassa, Kenshi Hayashi

    Asia-Pacific Conference of Transducers and Micro-Nano Technology 2016(APCOT2016)  2016年6月 

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    開催年月日: 2016年6月

    記述言語:英語   会議種別:口頭発表(一般)  

    開催地:KANAZAWA BUNKA HALL   国名:日本国  

  • Elimination of curvature in microelectromechanical-system membrane

    T. Sakata, K. Yamaguchi, N. Nemoto, M. Usui, Fumihiro Sassa, K. Ono, K. Takagahara, K. Kuwabara, J. Kodate, Y. Jin

    16th International Symposium on Semiconductor-on-Insulator Technology and Related Physics - 223rd ECS Meeting  2013年10月 

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    開催年月日: 2013年5月

    記述言語:英語  

    開催地:Toronto, ON   国名:カナダ  

    This paper describes the correlation between microelectromechanical-system (MEMS) membrane curvature and implanted argon in a microelectromechanical-system membrane. When a free-standing silicon membrane, fabricated through ashing of an organic film, is cleaned by exposure to argon plasma to remove the oxidized surface, the membrane is curved uniformly. The curvature is released by annealing. Total-reflection X-ray fluorescence analysis before/after annealing reveals that argon, which is implanted into the crystal lattice of silicon by argon plasma exposure, is desorbed by annealing. This analysis also indicates that there is a linear correlation between the curvature change and implanted argon.

  • Enhancement of sensitivity of coulometric detection usng a one-electrode system

    K. Ikemoto, K. Kojima, Fumihiro Sassa, M. Yokokawa, H. Suzuki

    2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11  2011年 

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    開催年月日: 2011年6月

    記述言語:英語  

    開催地:Beijing   国名:中華人民共和国  

    Coulometric analysis is effective in the analysis of an analyte in a liquid plug of a very small volume. However, in the conventional coulometric detection, it took time to collect analyte molecules dissolved in the solution. To solve this problem, we used a novel method to achieve significant enhancement of sensitivity by using a one-electrode system. As a model analyte, hydrogen peroxide was oxidized in a flow channel and silver was deposited simultaneously on another electrode in another flow channel. Coulometric detection of the deposited silver showed a step change of generated charge. As a result, measurement time was reduced significantly (less than 2 s), although conventional methods took more than 60 s to achieve the same sensitivity. This shorter measurement time also suppressed the influence of background noise, resulting in significant lowering of the detection limit.

  • Programable microfluidic processor with pumping and coulometric detecting functions

    Fumihiro Sassa, Y. Al-Zain, T. Ginoza, J. Fukuda, S. Miyazaki, H. Suzuki

    2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11  2011年 

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    開催年月日: 2011年6月

    記述言語:英語  

    開催地:Beijing   国名:中華人民共和国  

    An integrated microfluidic chip to handle liquid plugs of the nL order was fabricated. The chip consisted of a T-junction, shape memory alloy (SMA) micro plumps, and an electrochemical sensor. The weight of the chip including all the components was only 1.5 g. The device was operated by a computer control system connected to the chip. Driving voltage was less than 5 V. In the detection of an analyte using this chip, the volume of a sample solution was precisely measured at the T-junction, which was then separated into a liquid plug. The plug was subsequently transported to the electrochemical sensor. As a demonstration, the concentration of hydrogen peroxide was measured by coulometry. The measured charge was clearly dependent on the concentration of hydrogen peroxide.

  • Micro titration device and its application to rice freshness measurement

    X. L. Qiu, Fumihiro Sassa, D. Itoh, T. Satake, H. Suzuki

    2011 16th International Solid-State Sensors, Actuators and Microsystems Conference, TRANSDUCERS'11  2011年 

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    開催年月日: 2011年6月

    記述言語:英語  

    開催地:Beijing   国名:中華人民共和国  

    A plug-based on-chip titration device, constructed with a glass substrate and a poly (dimethylsiloxane) (PDMS) substrate, was used for acid-base titration. The device features a volume-regulation unit to produce plugs of a uniform volume used for titration. Although the volume of plugs formed by only injecting a solution and air simultaneously from a T-junction distributed in a wide range, the plug volume became markedly uniform using the volume-regulation unit. Acid-base titration could be conducted using this device. Furthermore, freshness of rice was evaluated by titrating fatty acid in a rice grain with a KOH solution using phenolphthalein as a pH-indicator. Rice samples harvested in different years and from different areas as well as of different species were analyzed using this device. Difference was observed clearly in the titration curves. New rice showed a color change at an early stage, whereas the color change delayed with aged rice.

  • Coulometric detection of an analyte in a liquid plug formed in a microflow channel

    Fumihiro Sassa, H. Laghzali, J. Fukuda, H. Suzuki

    TRANSDUCERS 2009 - 15th International Conference on Solid-State Sensors, Actuators and Microsystems  2009年 

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    開催年月日: 2009年6月

    記述言語:英語  

    開催地:Denver, CO   国名:アメリカ合衆国  

    Applicability of coulometric detection was tested for the analysis of an analyte in a liquid plug confined in a PDMS microflow channel. A plug prepared in the flow channel was placed on a three-electrode system and hydrogen peroxide was detected. With plugs of a small volume, the depletion of the analyte was rapid, making reproducible amperometric detection difficult particularly when the flow channel was shallow. On the other hand, coulometric detection showed a clear relationship between the generated charge and the concentration. However, when the volume of the plug was large, only a part of the analyte was used for detection, suggesting the possibility to improve the detection sensitivity further. The device was also tested in the detection of L-glutamate.

  • Microfluidic device for on-chip manipulation of liquid plugs for biosensing applications

    Yoshifumi Shimizu, Wataru Satoh, Atsushi Takashima, Fumihiro Sassa, Junji Fukuda, Hiroaki Suzuki

    6th IEEE Conference on SENSORS, IEEE SENSORS 2007  2007年12月 

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    開催年月日: 2007年10月

    記述言語:英語  

    開催地:Atlanta, GA   国名:アメリカ合衆国  

    A microfluidic device that forms a row of liquid plugs in a micro flow channel was fabricated, and its applicability to an on-chip enzyme-linked immunosorbent assay (ELISA) was demonstrated. The nanoliter liquid plugs were formed by six independent pumps and were mobilized in the micro-flow channel using a main pump. The operation of the pumps was based on the volume change caused as a result of the electrochemical production of hydrogen bubbles. When the bubbles were produced in the pumps, a polydimethylsiloxane (PDMS) diaphragm at the bottom of the compartment inflated and closed an inlet hole at the top of the reservoir. The solution in the reservoir was forced to be injected into the flow channel forming a liquid plug. After six plugs were formed, they were mobilized to a reaction chamber one by one to allow an antigen-antibody binding, cleansing, and detection. This simple and reliable liquid handling system could be applied to the detection of a tumor maker, α-fetoprotein (AFP).

  • 極微量溶液プラグのクーロメトリック分析—Coulometric detection of an analyte in a liquid plug

    佐々 文洋, Hind Laghzali, 福田 淳二

    Proceedings of the Chemical Sensor Symposium  2009年3月 

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    記述言語:日本語  

    国名:日本国  

    Coulometric detection of an analyte in a liquid plug formed in a microflow channel Applicability of coulometric detection was tested for the analysis of an analyte in a liquid plug confined in a PDMS microflow channel. A plug prepared in the flow channel was placed on a three-electrode system and hydrogen peroxide was detected. With plugs of a small volume, the depletion of the analyte was rapid, making reproducible amperometric detection difficult particularly when the flow channel was shallow. On the other hand, coulometric detection showed a clear relationship between the generated charge and the concentration. However, when the volume of the plug was large, only a part of the analyte was used for detection, suggesting the possibility to improve the detection sensitivity further. The device was also tested in the detection of L-glutamate. ©2009 IEEE.

  • プラグ型送液機構を利用した細胞機能評価—Analysis of cell functions using a plug-based microfluidic device

    亀岡 典哲, 高橋 晋太郎, 佐々 文洋

    Proceedings of the Chemical Sensor Symposium  2009年9月 

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    記述言語:日本語  

    国名:日本国  

  • 米の鮮度計測用μTASの開発

    QIU Xiaoli, SASSA Fumihiro, ITOH Daisuke, LI Yanjie, SUZUKI Hiroaki, SATAKE Takaaki

    J. Soc. Agr. Struc. Jpn.  2012年9月 

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    記述言語:英語  

    国名:日本国  

  • 金ナノ粒子-色素複合体形成に基づくガス応答性の向上—Improvement of gas response ability by AuNPs-fluorescent dye hybrid nanostructures—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    中井 雄太郎, 渡邊 真司, 吉岡 大貴, 佐々 文洋, 劉 傳軍, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2016年6月 

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    記述言語:日本語  

    国名:日本国  

  • 光極性変化材料によるガス吸着特性の制御—Gas adsorption characteristics control by photo-polarization material—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    中西 慶伍, 山下 誠一, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2016年6月 

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    記述言語:日本語  

    国名:日本国  

  • 蛍光性分子鋳型マイクロビーズを用いた選択的かつ高速な匂い可視化—Gas Selective Odor Imaging Sensor by Odorant Reactive Molecularly-Imprinted-Polymer Microbeads

    上野 翔太, 岩田 和也, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2016年10月 

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    記述言語:日本語  

    国名:日本国  

  • 異方性光成長による金属成長核連結による配向性ナノ構造の作製—Nanoparticle-connection by photo-assisted anisotropic growth for oriented nanostructure

    渡辺 真司, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2016年10月 

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    記述言語:日本語  

    国名:日本国  

  • 植物BVOC検知のための蛍光性MIPマイクロビーズの開発—Development of MIP Microbeads for Evaluation of Plant Biogenic Volatile Organic Compounds

    王 晧宇, 吉岡 大貴, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2016年10月 

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    記述言語:日本語  

    国名:日本国  

  • 分子鋳型ポリマーを用いたケミレジスタによるガス応答測定—Measurement of Gas Response by Chemiresistor Using Molecularly Imprinted Polymer

    篠原 翔, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2016年10月 

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    記述言語:日本語  

    国名:日本国  

  • バイオフィルムにおける細胞間相互作用のための分離・培養システム—Separation and culture system for analysis of cellular interaction in biofilm

    伏木 蒼太郎, 鈴木 博章, 横川 雅俊, 佐々 文洋, 茂木 亮介, 野村 暢彦

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2016年10月 

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    記述言語:日本語  

    国名:日本国  

  • 蛍光プローブ含有ポリマーフィルムによる匂いの可視化—Odor Visualization using Polymer Film containing Fluorescence Probe—ケミカルセンサ バイオ・マイクロシステム合同研究会 ケミカルセンサの香り,水センシングデバイスへの応用、バイオ・マイクロシステムへの応用および一般

    吉岡 大貴, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2016年11月 

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    記述言語:日本語  

    国名:日本国  

    ケミカルセンサ バイオ ・ マイクロ システム ゴウドウ ケンキュウカイ ケミカルセンサ ノ カオリ,ミズ センシングデバイス エ ノ オウヨウ 、 バイオ ・ マイクロ システム エ ノ オウヨウ オヨビ イッパン

  • 逐次吸脱着とガス交換によるガス分離装置の作製—Gas separator based on gas adsorption-desorption and ventilation sequence—フィジカルセンサ ケミカルセンサ マイクロマシン・センサシステム バイオ・マイクロシステム合同研究会 センサ・マイクロマシン一般および,センサ・マイクロマシンに共通する次世代ニーズ(ライフやグリーン・イノベーション等,ただしこれに限定しない)

    千綿 智之, 中西 慶伍, 佐々 文洋, 林 健司

    電気学会研究会資料. MSS  2017年6月 

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    記述言語:日本語  

    国名:日本国  

  • 分子選択層を持つプラズモニックセンサのガス透過特性評価—Evaluation of gas penetration property of plasmonic sensor with molecular selective layer—フィジカルセンサ ケミカルセンサ マイクロマシン・センサシステム バイオ・マイクロシステム合同研究会 センサ・マイクロマシン一般および,センサ・マイクロマシンに共通する次世代ニーズ(ライフやグリーン・イノベーション等,ただしこれに限定しない)

    下見 慶太, 中西 慶伍, 中井 雄太郎, 佐々 文洋, 林 健司

    電気学会研究会資料. MSS  2017年6月 

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    記述言語:日本語  

    国名:日本国  

  • 匂い刺激による鳥獣害対策技術に関する基礎検討—Preliminary investigation of odor stimulation technique in outdoor field for pest control—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    佐々 文洋, 楊 中元, 森元 章悟, 安田 章人, 細谷 忠嗣, 林 健司, 大橋 二大, 吉田 由紀, 犬童 拓也

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2018年7月 

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    記述言語:日本語  

    国名:日本国  

  • LSPR散乱光を利用したガス可視化撮像光学系—Optical imaging system for gas visualization based on LSPR scattering detection—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    副田 貴明, 楊 中元, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2018年7月 

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    記述言語:日本語  

    国名:日本国  

  • フォトパターニングAu/Agコアシェル構造を持つピクセル化マルチガスセンサによる匂い撮像素子

    副田 貴明, 楊 中元, 佐々 洋文, 林 健司, Sassa Fumihiro

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2018年10月 

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    記述言語:日本語  

    国名:日本国  

    Photopatterning Odor imaging device with pixelated multi-gas sensor with Au/Ag core-shell structure

  • 多重フィルタ層を持つプラズモニックガスセンサの開発—Development of Plasmonic Gas Sensor with Multiple Molecular Filter Layer—ケミカルセンサ バイオ・マイクロシステム合同研究会 香りの測定と制御,ケミカルセンサおよびバイオ・マイクロシステム一般

    下見 慶太, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2019年3月 

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    記述言語:日本語  

    国名:日本国  

  • 蛍光ハイパースペクトル画像による多サンプルガスセンシングと並列較正技術—Multi-sample gas sensing and its parallel calibration technique by fluorescence hyperspectral imaging—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    瀬政 康平, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2019年7月 

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    記述言語:日本語  

    国名:日本国  

  • 半導体ガスセンサ応答の時系列解析による人の行動イベント検出—The examination of human-behavior event detection by time-series analyzing with time modulated type gas sensor—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    羅 子涵, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2019年7月 

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    記述言語:日本語  

    国名:日本国  

  • 二次元LSPR基板による匂い痕跡画像の計測システムの開発—Development of odor trace imaging system with two-dimensional LSPR substrate—ケミカルセンサ バイオ・マイクロシステム合同研究会 香りの計測と心理・生理学的効果の応用,ケミカルセンサおよびバイオ・マイクロシステム一般

    楊 中元, 副田 貴明, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2020年3月 

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    記述言語:日本語  

    国名:日本国  

  • 応答特性分布を持つ2次元センサによるガス濃度の推定—Concentration Estimation of Gas Mixtures by Two-Dimensional Gas Sensor with Response Characteristic Distribution—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    澤田 新, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2020年7月 

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    記述言語:日本語  

    国名:日本国  

  • 化学物質を用いた情報の暗号化と認証技術の検討—Study of Information Encryption and Authentication Technology Using Chemical Substances—ケミカルセンサ研究会 ケミカル・バイオセンサとそのプロセス技術および一般

    原 琢己, 千村 智, 瀬政 康平, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2020年7月 

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    記述言語:日本語  

    国名:日本国  

  • 環境中VOCガスを用いたエナジーハーベスティング型ガスセンサの基礎検討

    宮本 靖也, 佐々 文洋, 林 健司

    2020年10月 

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    記述言語:日本語  

    国名:日本国  

    Basic study of energy harvesting type gas sensor using VOC gas in the environment

  • ポータブルMIPケミレジスタアレイによるヒト周辺の環境VOCの測定

    河野 寛貴, 葛 霊普, 佐々 文洋, 林 健司

    2020年10月 

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    記述言語:日本語  

    国名:日本国  

    Measurement of environmental VOCs around humans by portable MIP chemiresistor arrays

  • センサデータを用いた分子パラメータ推定モデルの作成

    千村 智, 佐々 文洋, 林 健司

    2020年10月 

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    記述言語:日本語  

    国名:日本国  

    Creation of model to estimate molecular parameter using sensor data

  • LSPRガスセンサロボットシステムによる空間拡散ガス情報の測定

    楠田 康弘, 楊 中元, 佐々 文洋, 林 健司

    2020年10月 

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    記述言語:日本語  

    国名:日本国  

    Measurement of the Spatially Distributed Gas Information with Vertical LSPR based High Speed Gas Sensor Robot System

  • 化学物質を用いた格子暗号の技術の検討—Investigation of techniques for chemical lattice-based encryption—マイクロマシン・センサシステム/ケミカルセンサ/バイオ・マイクロシステム合同研究会 Society 5.0における農業および環境センシング技術,香りの計測と心理・生理学的効果の応用,センサ一般

    原 琢己, 千村 智, 瀬政 康平, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2021年3月 

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    記述言語:日本語  

    国名:日本国  

  • 色素カップリング型2次元 LSPR ガスセンサによるガスの同時識別—Simultaneous Gas Identification by Dye-Coupled Two-Dimensional LSPR Gas Sensor

    大廣 幸翼, 瀬政 康平, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2021年11月 

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    記述言語:日本語  

    国名:日本国  

  • 表面増強ラマン散乱ガスセンサによるVOCの検知と識別—VOC detection and identification by Surface Enhanced Raman Scattering gas sensor—マイクロマシン・センサシステム/ケミカルセンサ/バイオ・マイクロシステム合同研究会 E部門総合研究会 招待講演セッション

    松尾 拓哉, 陳 林, 佐々 文洋, 林 健司

    電気学会研究会資料. MSS  2022年6月 

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    記述言語:日本語  

    国名:日本国  

  • 自己修復型ケミレジスタガスセンサに向けた自動修復液供給機構の開発—Development of automatic healing agent supply mechanism for self-healing chemiresistor gas sensor

    武居 巧, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2022年11月 

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    記述言語:日本語  

    国名:日本国  

  • 差分表面増強ラマン散乱によるVOCの検知と識別—Detection and identification of VOCs by differential surface-enhanced Raman scattering

    松尾 拓哉, 陳 林, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2022年11月 

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    記述言語:日本語  

    国名:日本国  

    Detection and identification of VOCs by differential surface-enhanced Raman scattering

  • 匂いセンサシステムによる人の行動検知—Human behavior detection by odor sensor system

    于 沢平, 葛 霊普, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]  2022年11月 

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    記述言語:日本語  

    国名:日本国  

    Human behavior detection by odor sensor system

  • 色素カップリング2次元LSPRガスセンサによる匂いの識別と流れの可視化—Odor discrimination and flow visualization by dye-coupled 2D LSPR gas sensors—ケミカルセンサ研究会 香りの計測と心理・生理学的効果の応用,Society 5.0における農業および環境センシング技術,ケミカルセンサおよびバイオ・マイクロシステム一般

    大廣 幸翼, 松岡 真聖, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan  2023年3月 

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    記述言語:日本語  

    国名:日本国  

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MISC

  • ナノリットルでOK.液滴による化学分析

    佐々 文洋

    生物工学会誌   2015年3月

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    記述言語:日本語   掲載種別:記事・総説・解説・論説等(学術雑誌)  

  • 液体プラグによる汎用的生化学分析システム

    佐々 文洋

    生物工学会誌   2010年12月

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    記述言語:日本語   掲載種別:記事・総説・解説・論説等(学術雑誌)  

  • 骨格パターニングによるモノリシックフィルムロボットの動作領域の拡張

    内間駿介, 石田佳洋, 林健司, 佐々文洋

    電気学会研究会資料(Web)   ( CHS-24-013-030 )   2024年

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  • ゲル充填マイクロウェルアレイデバイスによるナフタレン分解菌群の取得と解析

    LIU Yuxin, YANG Chongyang, ZHANG Shiyi, 水口千穂, 水口千穂, 佐々文洋, 野尻秀昭, 野尻秀昭

    日本農芸化学会大会講演要旨集(Web)   2024   2024年   ISSN:2186-7976

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  • マルチモーダルセンサロボットによる室内ガスの計測

    WU Junjie, GU Lingpu, 佐々文洋, 林健司

    電気学会研究会資料(Web)   ( MSS-24-031-038.040-056 )   2024年

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  • ワイヤレス給電によるアンテザードモノリシックフィルムロボット

    福田悠太, 林健司, 佐々文洋

    電気学会研究会資料(Web)   ( CHS-24-013-030 )   2024年

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  • 蛍光色素によるLSPRセンサのガス応答変調とガス種識別能の向上

    藤本航志, 熊副慎悟, HEO Gyeong, 佐々文洋, 林健司

    電気学会研究会資料(Web)   ( CHS-24-013-030 )   2024年

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  • 表面増強ラマンガスセンサの開発と検知方法の検討

    秋永銀十, 山田健太, 佐々文洋, 林健司

    電気学会研究会資料(Web)   ( CHS-24-013-030 )   2024年

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  • Fully inkjet-printed pixel-patterned LSPR sensor for gas detection: ケミカルセンサ研究会 香りの計測と心理・生理学的効果の応用,Society 5.0における農業および環境センシング技術,ケミカルセンサおよびバイオ・マイクロシステム一般

    2023 ( 1-8 )   25 - 30   2023年3月

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    記述言語:英語  

    CiNii Research

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  • 色素カップリング2次元LSPRガスセンサによる匂いの識別と流れの可視化—Odor discrimination and flow visualization by dye-coupled 2D LSPR gas sensors—ケミカルセンサ研究会 香りの計測と心理・生理学的効果の応用,Society 5.0における農業および環境センシング技術,ケミカルセンサおよびバイオ・マイクロシステム一般

    大廣 幸翼, 松岡 真聖, 佐々 文洋, 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan   2023 ( 1-8 )   31 - 36   2023年3月

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    記述言語:日本語   出版者・発行元:電気学会  

    CiNii Research

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  • 2次元LSPRガスセンサを用いた複数ガスの時空間分布の可視化

    松岡真聖, 佐々文洋, 林健司

    電気学会全国大会講演論文集(CD-ROM)   2023   2023年

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  • 表面修飾表面増強ラマン散乱ガスセンサによるVOCの検知と識別

    松尾拓哉, CHEN Lin, 佐々文洋, 林健司

    電気学会全国大会講演論文集(CD-ROM)   2023   2023年

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  • 色素カップリング2次元LSPRガスセンサによる匂いの識別と流れの可視化

    大廣幸翼, 松岡真聖, 佐々文洋, 林健司

    電気学会研究会資料(Web)   ( CHS-23-001-008 )   2023年

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  • 温度・ひずみセンサを集積化した動く電子回路

    石田佳洋, 大塚陸, ZHANG Shiyi, 林健司, 佐々文洋

    センサ・マイクロマシンと応用システムシンポジウム(CD-ROM)   40th   2023年

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  • 微生物細胞への電子線照射によるROS生成および細胞伸長

    片井順也, 長野祐太, 鳴海哲夫, 新谷政己, 田代陽介, 居波渉, 川田善正, 佐々文洋, 二又裕之, 二又裕之

    日本微生物生態学会大会(Web)   36th   2023年

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  • 多種類ガス分布の高速・高精度推定のためのAu/Ag/Tio<sub>2</sub>LSPRセンサの開発

    熊副慎悟, 松岡真聖, 佐々文洋, 林健司

    センサ・マイクロマシンと応用システムシンポジウム(CD-ROM)   40th   2023年

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  • 動く電子回路技術のための位置制御用物理センサ集積化

    石田佳洋, 大塚陸, ZHANG Shiyi, 林健司, 佐々文洋

    電気学会研究会資料(Web)   ( CHS-23-016-025 )   2023年

     詳細を見る

  • 動く電子回路技術のための両方向屈曲・多自由度モノリシックフィルムロボット

    大塚陸, ZHANG Shiyi, 林健司, 佐々文洋

    電気学会全国大会講演論文集(CD-ROM)   2023   2023年

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  • 両側水腎症を伴った腰下リンパ節原発リンパ腫に対して腎瘻チューブ設置と化学療法で完全寛解を得た若齢犬の1例

    首藤優志, 古川林太郎, 宇田惇太朗, 栗原万夢, 佐々木唯可, 萩原祐太郎, 林佑将, 田中領, 上野文洋, 小林正行, 佐々木唯可, 萩原祐太郎, 林佑将, 田中領, 上野文洋

    動物臨床医学会年次大会プロシーディング   44th ( 2 )   2023年

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  • プラズマニックガスセンサ応答のプロセス条件に関する検討

    熊副慎悟, 松岡真聖, 佐々文洋, 林健司

    電気学会研究会資料(Web)   ( CHS-23-016-025 )   2023年

     詳細を見る

  • ゲル充填マイクロウェルアレイデバイスによるナフタレン分解菌群の取得と解析

    LIU Yuxin, YANG Chongyang, ZHANG Shiyi, 水口千穂, 水口千穂, 岡田憲典, 佐々文洋, 野尻秀昭, 野尻秀昭

    日本農芸化学会大会講演要旨集(Web)   2023   2023年   ISSN:2186-7976

     詳細を見る

  • 2次元SERSセンサによるガス源の識別と可視化

    山田健太, 松尾拓哉, CHIN Lin, 佐々文洋, 林健司

    センサ・マイクロマシンと応用システムシンポジウム(CD-ROM)   40th   2023年

     詳細を見る

  • 2次元SERSセンサによるガス源の可視化

    山田健太, 松尾拓哉, CHIN Lin, 佐々文洋, 林健司

    電気学会研究会資料(Web)   ( CHS-23-016-025 )   2023年

     詳細を見る

  • 匂いセンサシステムによる人の行動検知—Human behavior detection by odor sensor system

    于 沢平, 葛 霊普, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]   39   3p   2022年11月

     詳細を見る

    記述言語:日本語   出版者・発行元:Institute of Electrical Engineers of Japan  

    CiNii Research

    J-GLOBAL

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  • 自己修復型ケミレジスタガスセンサに向けた自動修復液供給機構の開発—Development of automatic healing agent supply mechanism for self-healing chemiresistor gas sensor

    武居 巧, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]   39   5p   2022年11月

     詳細を見る

    記述言語:日本語   出版者・発行元:Institute of Electrical Engineers of Japan  

    CiNii Research

    J-GLOBAL

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  • 差分表面増強ラマン散乱によるVOCの検知と識別—Detection and identification of VOCs by differential surface-enhanced Raman scattering

    松尾 拓哉, 陳 林, 佐々 文洋, 林 健司

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編]   39   4p   2022年11月

     詳細を見る

    記述言語:日本語   出版者・発行元:Institute of Electrical Engineers of Japan  

    CiNii Research

    J-GLOBAL

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  • 表面増強ラマン散乱ガスセンサによるVOCの検知と識別—VOC detection and identification by Surface Enhanced Raman Scattering gas sensor—マイクロマシン・センサシステム/ケミカルセンサ/バイオ・マイクロシステム合同研究会 E部門総合研究会 招待講演セッション

    松尾 拓哉, 陳 林, 佐々 文洋, 林 健司

    電気学会研究会資料. MSS   2022 ( 14-25 )   51 - 56   2022年6月

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    記述言語:日本語   出版者・発行元:電気学会  

    CiNii Research

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  • 表面増強ラマン散乱ガスセンサによるVOCの検知と識別

    松尾拓哉, CHEN Lin, 佐々文洋, 林健司

    電気学会研究会資料(Web)   ( MSS-22-14-25/CHS-22-8-19/BMS-22-13-24 )   2022年

     詳細を見る

  • 微生物学研究者の為のBioMEMS入門

    佐々文洋

    Journal of Environmental Biotechnology (Web)   22 ( 1 )   2022年   ISSN:2436-5041

     詳細を見る

  • 微生物培養用ゲル充填マイクロウェルアレイを用いたナフタレン分解菌の培養と取得

    岸上佳保里, YANG Chongyang, 水口千穂, 水口千穂, 岡田憲典, 佐々文洋, 野尻秀昭, 野尻秀昭

    日本農芸化学会大会講演要旨集(Web)   2022   2022年   ISSN:2186-7976

     詳細を見る

  • 動く電子回路技術のためのモノリシックフィルムロボット作製技術

    大塚陸, ZHANG Shiyi, 林健司, 佐々文洋

    電気学会研究会資料(Web)   ( BMS-22-025-033 )   2022年

     詳細を見る

  • 低エネルギー電子線が微生物細胞に及ぼす影響

    片井順也, 長野祐太, 鈴木研志, 安池一貴, 林稜也, 田中朝陽, 佐々文洋, 鳴海哲夫, 新谷政己, 田代陽介, 川田善正, 居波渉, 二又裕之

    日本生物工学会大会講演要旨集   74th   2022年

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  • マイクロウェルアレイを用いた新たな微生物の分離培養法の構築

    沼館美法, 佐々文洋, 土肥裕希, 桝尾俊介, 竹下典男, 高谷直樹

    日本農芸化学会大会講演要旨集(Web)   2022   2022年   ISSN:2186-7976

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  • ゲル充填マイクロウェルアレイと顕微ラマン分光測定の融合:土壌微生物への応用

    前田大樹, 菅野菜々子, 佐々文洋, 重藤真介

    日本農芸化学会大会講演要旨集(Web)   2022   2022年   ISSN:2186-7976

     詳細を見る

  • Ag/Auバイメタルを用いたピクセル構造ガスセンサ

    澤田新, 杉原圭祐, 佐々文洋, 林健司

    電気学会研究会資料(Web)   2022 ( CHS-22-001-007/BMS-22-001-007 )   9 - 12   2022年

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    記述言語:日本語   出版者・発行元:電気学会  

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  • Review of Microfluidic Devices for On‐Chip Chemical Sensing

    Takahiro Watanabe, Fumihiro Sassa, Yoshitaka Yoshizumi, Hiroaki Suzuki

    Electronics and Communications in Japan   2017年3月

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    記述言語:英語   掲載種別:記事・総説・解説・論説等(学術雑誌)  

    Microfluidic techniques can be a basis to realize user-friendly microanalytical devices of high performance. Required operations include injection of solutions to reaction chambers, volume measurement, and mixing of solutions. For this purpose, the use of surface tension is attractive. In hydrophobic flow channels, solutions can be moved stably in the form of plugs. Otherwise, solutions can be transported by capillary action in a hydrophilic flow channel and stopped at a hydrophobic valve. The valve can be opened autonomously by switching the mixed potential by wetting a zinc electrode formed in a controlling flow channel. In this review paper, we introduce some of our microfluidic devices particularly focusing on devices that work based on surface tension.

  • 微小化学分析装置

    福田淳二, 佐々 文洋, 鈴木博章

    化学装置   2009年7月

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    記述言語:日本語   掲載種別:記事・総説・解説・論説等(学術雑誌)  

▼全件表示

産業財産権

特許権   出願件数: 9件   登録件数: 0件
実用新案権   出願件数: 0件   登録件数: 0件
意匠権   出願件数: 0件   登録件数: 0件
商標権   出願件数: 0件   登録件数: 0件

所属学協会

  • 日本生物工学会

  • 電気学会

学術貢献活動

  • 座長(Chairmanship)

    平成28年度第69回電気・情報関係学会九州支部連合大会  ( 宮崎大学(木花キャンパス) ) 2016年9月

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    種別:大会・シンポジウム等 

  • 座長(Chairmanship)

    電気学会E部門総合研究会  ( 石川県 金沢市文化ホール ) 2016年6月

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    種別:大会・シンポジウム等 

  • 「E総研優秀論文発表賞」の審査委員主査

    電気学会E部門総合研究会  ( 石川県 金沢市文化ホール ) 2016年6月

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    種別:大会・シンポジウム等 

その他

  • ダイバーシティ・スーパーグローバル教員育成研修プログラムへの採択

    2020年12月

共同研究・競争的資金等の研究課題

  • 生き物のように能動的に動く生体適合集積電子回路技術

    研究課題/領域番号:1270757  2024年3月 - 2027年3月

    科学技術振興機構(JST)  創発的研究支援事業 

    佐々文洋

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    担当区分:研究代表者  資金種別:科研費以外の競争的資金

  • 「フィールドで持ち歩く実験室」:MEMSで創り出す最小の生態学実験室

    研究課題/領域番号:22K19797  2022年6月 - 2025年3月

    科学研究費助成事業  挑戦的研究(萌芽)

    岡田 昌也, 佐々 文洋, 中井 亮佑

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    資金種別:科研費

    本研究は,科学者育成という新しい教育目標を取り込んだ新GIGAスクール実現の礎を創ることを目的とする.このために,本研究は,MEMS (Micro Electro Mechanical Systems)技術によって「最小の生態学実験室」を創り出し,これを学習者がフィールドで持ち歩き,学習するための知能拡張技術を開発する.

    CiNii Research

  • 匂いの時空間揺らぎ情報に基づく人探索

    研究課題/領域番号:22H04952  2022年4月 - 2027年3月

    科学研究費助成事業  基盤研究(S)

    林 健司, 中野 幸二, 冨浦 洋一, 興 雄司, 竪 直也, 佐々 文洋, 石田 寛

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    資金種別:科研費

    匂いなどの揮発性化学物質情報を光情報に変換する光化学ナノプローブを2次元展開し、匂いの流れや痕跡などの空間分布を見ることができるデバイスを開発し、化学物質空間を高速・高感度、かつ高い空間分解能で可視化する。この化学イメージングデバイスは化学物質情報をハイパースペクトル情報に変換し、多種多様な匂い物質情報を網羅的に取得できる。さらに、開発したセンサデバイスの機能実証研究として、匂い情報キュレーションロボットを構築し、ガス源探索(重要例:危険物漏洩、災害現場での人探索)を実現する。

    CiNii Research

  • ロボティックフィルムによるアクティブ微小生化学センシング技術の開発

    研究課題/領域番号:23K22772  2022年4月 - 2025年3月

    科学研究費助成事業  基盤研究(B)

    佐々 文洋

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    資金種別:科研費

    Covid-19禍の中、ますます高度化する国際化 高齢化社会においてウェアラブル生化学センサは安全 健康 防疫を担保するための強力な基盤ツールとなる。様々な項目を検出出可能な超微量・微小なデバイスが開発されているがその普及のためには、さらなる高機能化・低生体侵襲化がカギとなる。本研究では、ロボット分野で注目されるアクティブセンシング技術に注目し、BioMEMS技術をベースとしたソフトマイクロロボティック技術を用いて、能動的かつ知的に動くウェアラブル生化学センサを構築する。

    CiNii Research

  • ロボティックフィルムによるアクティブ微小生化学センシング技術の開発

    研究課題/領域番号:22H01502  2022年 - 2024年

    日本学術振興会  科学研究費助成事業  基盤研究(B)

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    担当区分:研究代表者  資金種別:科研費

  • 大規模生物細胞培養・操作・実験プロセッシングユニット

    研究課題/領域番号:JPMJTM20GW  2020年 - 2021年

    科学研究費助成事業  研究成果展開事業 A-STEPトライアウト

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    担当区分:研究代表者  資金種別:科研費以外の競争的資金

  • 超地球生命体を解き明かすポストコッホ生態学

    研究課題/領域番号:19H05679  2019年6月 - 2024年3月

    科学研究費助成事業  新学術領域研究(研究領域提案型)

    高谷 直樹, 大熊 盛也, 重藤 真介, 松井 求, 佐々 文洋, 野村 暢彦, 跡見 晴幸, 野尻 秀昭, 大西 康夫, 中井 亮佑, 大津 厳生

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    資金種別:科研費

    本総括班は、本領域研究の支援と領域の運営を行う。特に、モデル圃場の運営、環境コンテキストデータの取得支援、土壌試料および各研究によって得られたデータの共有化の研究支援を行う。また、班会議・領域会議の主催、共同研究体制の構築支援、アウトリーチ活動、研究評価、公募と公募班の運営、若手研究者教育の領域運営を行う。また、海外での成果発表、若手の育成、国際共同研究の推進の国際活動を支援する。

    CiNii Research

  • ポストコッホ微生物の分離・培養の技術革新

    研究課題/領域番号:19H05680  2019年 - 2023年

    日本学術振興会・文部科学省  科学研究費助成事業  新学術領域研究

    佐々 文洋

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    担当区分:研究代表者  資金種別:科研費

    現在の微生物学研究で用いられている培養機器は100 年以上前に開発されたものであり、改良の余 地を多く残している。特に未発見の種を含む膨大な微生物種とその生理的機能の多様性の全貌を解明するため には、従来とは桁違いの数のサンプルを処理可能な微生物分離・培養・解析システムの構築が必要で ある。本研究ではマイクロマシンニング技術を用いて、1プレートで 10 万-100 万単位の単離 培養・分析・保存を可能とする次世代の微生物学研究用ツールを構築する。これにより、従来法では 分離できなかった微生物(微生物ダークマター)のスクリーニングおよび、数種類の微生物の相互作用に基づく複合微生物系の一括分析を目指す。

    CiNii Research

  • 生物由来揮発性有機化合物(BVOC)ガスの濃縮分離・高感度測定を行うためのμ-TAS技術を用いた微小センサシステムの開発

    2017年

    科学研究費助成事業  九州大学スタートアップ支援

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    担当区分:研究代表者  資金種別:科研費以外の競争的資金

  • 生物由来揮発性有機化合物(BVOC)ガスの濃縮分離・高感度測定を行うためのμ-TAS技術を用いた微小センサシステムの開発

    2016年

    システム情報科学研究院・スタートアップ支援経費

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    担当区分:研究代表者  資金種別:学内資金・基金等

  • 超集積型高耐久化技術による浮遊ウイルスモニタリングセンサの構築

    研究課題/領域番号:26790028  2014年 - 2015年

    科学研究費助成事業  若手研究(B)

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    担当区分:研究代表者  資金種別:科研費

  • 高密度マイクロフルーイディックストレージによる高速有用微生物探索デバイスの開発

    研究課題/領域番号:13J01428  2013年 - 2015年

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

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    担当区分:研究代表者  資金種別:科研費

  • 汎用的溶液プラグ操作原理に基づくバイオケミカルマイクロプロセッサの開発

    研究課題/領域番号:09J03949  2009年 - 2010年

    日本学術振興会  科学研究費助成事業  特別研究員奨励費

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    担当区分:研究代表者  資金種別:科研費

▼全件表示

教育活動概要

  • 学部学生実験での指導および研究室での学部四年生・大学院生への研究指導。
    また、学部及び大学院での講義。

担当授業科目

  • ディジタル電子回路Ⅱ(CM・EE)

    2024年6月 - 2024年8月   夏学期

  • Survey in EEE Studies(Group2)

    2024年4月 - 2024年9月   前期

  • 電気電子工学研究演示(第2グループ)

    2024年4月 - 2024年9月   前期

  • 電気電子工学演示Ⅰ

    2024年4月 - 2024年9月   前期

  • 電気電子工学読解Ⅰ

    2024年4月 - 2024年9月   前期

  • ディジタル電子回路(A・C)【前期】

    2024年4月 - 2024年9月   前期

  • ディジタル電子回路Ⅰ(CM・EE)

    2024年4月 - 2024年6月   春学期

  • 電気電子工学読解Ⅱ

    2023年10月 - 2024年3月   後期

  • Presentations in EEE Studies(Group2)

    2023年10月 - 2024年3月   後期

  • 電気電子工学研究調査(第2グループ)

    2023年10月 - 2024年3月   後期

  • 電気電子工学演示Ⅱ

    2023年10月 - 2024年3月   後期

  • ディジタル電子回路Ⅱ(CM・EE)

    2023年6月 - 2023年8月   夏学期

  • 電気電子工学演示Ⅰ

    2023年4月 - 2023年9月   前期

  • 電気電子工学企画演習

    2023年4月 - 2023年9月   前期

  • ディジタル電子回路(A・C)【前期】

    2023年4月 - 2023年9月   前期

  • 電気電子工学読解Ⅰ

    2023年4月 - 2023年9月   前期

  • ディジタル電子回路Ⅰ(CM・EE)

    2023年4月 - 2023年6月   春学期

  • 電気情報工学入門

    2023年4月 - 2023年6月   春学期

  • 電気情報工学実験Ⅱ(AB)

    2022年10月 - 2023年3月   後期

  • 電気情報工学基礎実験

    2022年10月 - 2023年3月   後期

  • 電気電子工学読解Ⅱ

    2022年10月 - 2023年3月   後期

  • 電気電子工学演示Ⅱ

    2022年10月 - 2023年3月   後期

  • ディジタル電子回路(A,C)

    2022年4月 - 2022年9月   前期

  • 電気情報工学実験Ⅱ(AB)

    2020年10月 - 2021年3月   後期

  • 電気情報工学実験Ⅱ(AB)

    2019年10月 - 2020年3月   後期

  • 電気情報工学実験Ⅱ(AB)

    2019年10月 - 2020年3月   後期

  • 電気情報工学実験

    2017年10月 - 2018年3月   後期

  • 電気情報工学実験

    2017年4月 - 2017年9月   前期

▼全件表示

FD参加状況

  • 2020年10月   役割:参加   名称:2020年度 ユニバーシティ・デザイン・ワークショップの報告

    主催組織:部局

  • 2020年4月   役割:参加   名称:Moodleを利用したe-Learning実例報告(九州大学電気情報において)

    主催組織:部局

  • 2019年6月   役割:参加   名称:8大学情報系研究科長会議の報告

    主催組織:部局

  • 2017年9月   役割:参加   名称:英語による教授能力向上研修

    主催組織:全学

他大学・他機関等の客員・兼任・非常勤講師等

  • 2021年  講義内容(実施大学University of Pau and Pays de l'Adour/学部・研究科Institute of Interdisciplinary Research on Environment and Materials (IPREM))  1)講義期間(回数):2021年 11月 5日 ~ 11月27日 (1.5時間×8回)  2)方  法:オンライン講義と実際のデバイスの体験使用によるアクティブラーニング  3)講義テーマ:BioMEMS introduction -fabrication, application, practice-  4)受講生 学年・人数:学部生及び大学院生、参加者22名  区分:集中講義  国内外の区分:国外 

その他教育活動及び特記事項

  • 2023年  クラス担任  学部

  • 2021年  その他特記事項  海外大学博士課程学生研究指導(University of Pau and Pays de l'Adour所属学生1名) (2021年7月 ~ 2021年12月)※SENTAN-Qプログラムに関連した研究・論文執筆指導。

     詳細を見る

    海外大学博士課程学生研究指導(University of Pau and Pays de l'Adour所属学生1名) (2021年7月 ~ 2021年12月)※SENTAN-Qプログラムに関連した研究・論文執筆指導。

  • 2021年  その他特記事項  仏University of Pau and Pays de l'Adour(Institute of Interdisciplinary     Research on Environment and Materials) (2021年11月)※当該大学部門において学部生および大学院生を対象とした、”BioMEMS introduction -fabrication, application, practice-”のテーマにて全4日間、1.5時間x8回の集中講義。

     詳細を見る

    仏University of Pau and Pays de l'Adour(Institute of Interdisciplinary     Research on Environment and Materials) (2021年11月)※当該大学部門において学部生および大学院生を対象とした、”BioMEMS introduction -fabrication, application, practice-”のテーマにて全4日間、1.5時間x8回の集中講義。

  • 2020年  その他特記事項  博士課程留学生研究指導(九州大学システム情報科学府所属学生1名) (2020年4月 ~ 2020年12月)※九州大学ダイバーシテイ・スーパーグローバル教員育成研修(SENTAN-Q)プログラムに関連した研究・論文執筆指導。

     詳細を見る

    博士課程留学生研究指導(九州大学システム情報科学府所属学生1名) (2020年4月 ~ 2020年12月)※九州大学ダイバーシテイ・スーパーグローバル教員育成研修(SENTAN-Q)プログラムに関連した研究・論文執筆指導。

  • 2015年  その他特記事項  電気情報工学実験を担当している他、研究室における活動として、博士課程、修士課程、学士課程学生の研究指導に取り組んでいる。

     詳細を見る

    電気情報工学実験を担当している他、研究室における活動として、博士課程、修士課程、学士課程学生の研究指導に取り組んでいる。

社会貢献活動

  • 匂いセンシングに関して株式会社ユーエスイーと匂いセンサの研究開発の共同研究を行っている.

    株式会社ユーエスイー  2016年10月

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    対象:社会人・一般, 学術団体, 企業, 市民団体, 行政機関

    種別:研究指導

  • 中学生の科学実験教室「匂い嗅ぎセンサーロボット」

    近郊の中学生  2016年8月

     詳細を見る

    対象:幼稚園以下, 小学生, 中学生, 高校生

    種別:セミナー・ワークショップ

政策形成、学術振興等への寄与活動

  • 2017年4月 - 2019年3月   電気学会ケミカルセンサIoT技術調査専門​委員会 委員

    化学センサのIoT応用に関する調査・検討。

  • 2015年4月 - 2019年3月   文部科学省科学技術・学術政策研究所

    文部科学省科学技術・学術政策研究所 科学技術動向研究センター 専門調査員

外国人研究者等の受け入れ状況

  • City College of New York

    受入れ期間: 2016年8月   (期間):2週間未満

    国籍:アメリカ合衆国

海外渡航歴

  • 2014年2月 - 2015年7月

    滞在国名1:アメリカ合衆国   滞在機関名1:マサチューセッツ工科大学

  • 2010年2月 - 2010年4月

    滞在国名1:アメリカ合衆国   滞在機関名1:City college of New York