The Japan Society of Applied Physics

2022 International Conference on Solid State Devices and Materials

2022 International Conference on Solid State Devices and Materials

Sep 26, 2022 - Dec 23, 2022
Makuhari Messe

4:45 PM - 5:00 PM

[D-3-02] Spatiotemporal Thermal Management of Homogeneous Oxide Sensor Array for Discrimination of Biomarkers in Mixed Molecules

〇Shintaro Nagata1, Tsunaki Takahashi1,2, Haruka Honda1, Motoki Date1, Yohsuke Shiiki3, Wataru Tanaka1, Takuro Hosomi1,2, Kazuki Nagashima1,2, Hiroki Ishikuro3, Takeshi Yanagida1,4 (1. Department of Applied Chemistry, Graduate School of Eng., The Univ. of Tokyo (Japan), 2. JST, PRESTO (Japan), 3. Department of Electronics and Electrical Eng., Keio Univ. (Japan), 4. Inst. for Materials Chemistry and Eng., Kyushu Univ. (Japan))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.D-3-02

We propose a chemical sensor system for discrimination of trace-level biomarkers in mixed molecules based on spatiotemporal thermal management of homogeneous oxide sensor array. Self-Joule-heating modulates chemical reactivity of individual SnO2 channels, enabling a virtual heterogeneous chemical sensor array operation. Mixed molecules were separately transported to the sensor array via time-series desorption temperature control of silica adsorbents, which densify trace-level molecules in a sample gas. Furthermore, we demonstrate the discrimination of model samples which mimic urine of tumor patients using the proposed sensor system.