Kyushu University Academic Staff Educational and Research Activities Database
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Ho Johnny Chung Yin Last modified date:2022.11.11

 Reseacher Profiling Tool Kyushu University Pure
Academic Degree
Doctorate (in Engineering ) (UC Berkeley) 
Country of degree conferring institution (Overseas)
Yes Doctor
Field of Specialization
Nanostructured Integrated Materials
Total Priod of education and research career in the foreign country
Outline Activities
Our research focus is highly interdisciplinary involving chemistry, physics, materials science and various engineering disciplines to explore novel nano-materials and nano-engineering techniques for various technological applications. They can be categorized into three major directions: Monolayer Assisted Nanoscale Processing, Synthesis and Characterization of Fundamental Properties of Nano-Materials, Large-Scale and Heterogeneous Integration of Nano-Materials for Flexible and High Performance Technological Applications including Electronics, Energy-Harvesting Modules, Photonics and Sensors.
Research Interests
  • Our research program aims to utilize chemistry, physics, materials science and various engineering disciplines to explore novel nano-materials and nano-engineering techniques for various technological applications including electronics, energy-harvesting, photonics, and sensors, etc.
    keyword : Nanowires
Academic Activities
1. Kang X., Yip S.P., Meng Y., Wang W., Li D., Liu C., Ho J.C, High-Performance Electrically Transduced Hazardous Gas Sensors Based on Low-Dimensional Nanomaterials, Nanoscale Advances, 10.1039/d1na00433f , 3, 6254-6270, 2021.09, Low-dimensional nanomaterials have been proven as promising high-performance gas sensing components due to their fascinating structural, physical, chemical, and electronic characteristics. In particular, materials with low dimensionalities (i.e., 0D, 1D, and 2D) possess an extremely large surface area-to-volume ratio to expose abundant active sites for interactions with molecular analytes. Gas sensors based on these materials exhibit a sensitive response to subtle external perturbations on sensing channel materials via electrical transduction, demonstrating a fast response/recovery, specific selectivity, and remarkable stability. Herein, we comprehensively elaborate gas sensing performances in the field of sensitive detection of hazardous gases with diverse low-dimensional sensing materials and their hybrid combinations. We will first introduce the common configurations of gas sensing devices and underlying transduction principles. Then, the main performance parameters of gas sensing devices and subsequently the main underlying sensing mechanisms governing their detection operation process are outlined and described. Importantly, we also elaborate the compositional and structural characteristics of various low-dimensional sensing materials, exemplified by the corresponding sensing systems. Finally, our perspectives on the challenges and opportunities confronting the development and future applications of low-dimensional materials for high-performance gas sensing are also presented. The aim is to provide further insights into the material design of different nanostructures and to establish relevant design guidelines to facilitate the device performance enhancement of nanomaterial based gas sensors..