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Fumihiro Sassa Last modified date：2024.06.27

Associate Professor / Department of Electronics
Faculty of Information Science and Electrical Engineering


Graduate School
Department of Electronics
Graduate School of Information Science and Electrical Engineering
Undergraduate School
Department of Electrical Engineering and Computer Science
School of Engineering


Homepage
https://kyushu-u.elsevierpure.com/en/persons/fumihiro-sassa
　Reseacher Profiling Tool　Kyushu University Pure
http://o.ed.kyushu-u.ac.jp/
Organic Electronic Device Lab .
Phone
092-802-3629
Fax
029-802-3629
Academic Degree
Ph.D.
Country of degree conferring institution (Overseas)
No
Field of Specialization
MEMS, Microfluidic device, Sensor robot, Bio sensor, Chemical sensor
Total Priod of education and research career in the foreign country
01years09months
Outline Activities
Resarch:　Development of smart material and microsystems for bio/chemical gas sensing.
Research
Research Interests
  • Development of smart material and microsystems for bio/chemical sensing.
    keyword : BioMEMS, gas sensor, smart material
    2016.02.
Academic Activities
Books
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Reports
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Papers
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1. C. Duran, S. Zhang, C. Yang, M. L. Falco, C. Cravo-Laureau, C. Suzuki-Minakuchi, H. Nojiri, R. Duran, F. Sassa, Low-cost gel-filled microwell array device for screening marine microbial consortium, Frontiers in Microbiology, vol.13, 1031439, 2022.12.
2. Shiyi Zhang, Joseph Wang, Kenshi Hayashi, Fumihiro Sassa, Monolithic processing of a layered flexible robotic actuator film for kinetic electronics, SCIENTIFIC REPORTS, 10.1038/s41598-021-99500-9, 11, 1, 20015-20015, 2021.10, 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"..
Presentations
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1. Fumihiro Sassa, Kenshi Hayashi, Hiroaki Suzuki, Programmable droplet processing device for bio/chemical analysis, EMN meeting Droplets2016, 2016.05, 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..
Membership in Academic Society
  • The Institute of Electrical Engineers of Japan
  • The Society for Biotechnology, Japan
Educational
Other Educational Activities
  • 2021.07.
  • 2021.11.
  • 2020.04.
  • 2016.02.


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