The Japan Society of Applied Physics

2023 International Conference on Solid State Devices and Materials

2023 International Conference on Solid State Devices and Materials

2023年9月5日 〜 2023年10月31日
Nagoya Congress Center

[PS-7-05] Great Enhancement of Sensitivity for SARS-CoV-2 Detection by Integrated Graphene FET Biosensor Using ζ-potential modulator

○Kaori - Yamamoto1, Natsuki Sato1, Kiyoji Sakano1, Takao Ono1, Yasushi Kanai1, Shota Ushiba2, Naruto Miyakawa2, Shinsuke Tani2, Masahiko Kimura2, Youhei Watanabe3, Hidekazu Tanaka1, Kazuhiko Matsumoto1 (1. SANKEN, Osaka Univ. (Japan), 2. Murata Manufac. (Japan), 3. Kyoto Prefecture Univ. of Medicine (Japan))

https://doi.org/10.7567/SSDM.2023.PS-7-05

By modulating the ζ-potential of graphene FET bio sensor, the sensitivity of the FET could be enhanced about 10 times higher than without modulation. ζ-potential modulator is a kind of cation polymer. Using the ζ-potential modulated graphene FET (G-FET), SARS-CoV-2 was detected as far as 107 FFU/mL which is the 10 times higher sensitivity than without ζ-potential modulation.