The 83rd JSAP Autumn Meeting 2022

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12 Organic Molecules and Bioelectronics » 12.7 Biomedical Engineering and Biochips

[22p-A105-1~20] 12.7 Biomedical Engineering and Biochips

Thu. Sep 22, 2022 1:00 PM - 6:45 PM A105 (A105)

Koichiro Miyamoto(Tohoku Univ.), Kiyotaka Sasagawa(NAIST), Yamashita Ichiro(Osaka Univ.), Minoru Noda(Kyoto Institute of Technology)

6:00 PM - 6:15 PM

△ [22p-A105-18] Verification of Basic Properties of CMOS Gas Sensor for Biomimetic Odor Sensing

〇Takeru Wada1, Yong.Joon Choi1, Kazuhiro Takahashi1, Kazuaki Sawada1, Toshihiko Noda1 (1.Toyohashi Univ.)

Keywords:potentiometric gas sensor arrays, E-nose, gas sensitive membrane

In this study, the mechanism of gas detection was examined based on an operational model of a CMOS potential gas sensor. The shift and change in slope of the characteristic line before and after gas adsorption were considered to detect changes in capacitance and potential in the sensing membrane. The shift of the characteristic line and the change of the slope caused by the change of the dielectric constant and the fixed charge density of the sensing membrane were caused by the gas exposure. The results revealed the basic characteristics of the potential sensor and a novel gas sensing device based on the gas-sensitive membrane.