[14p-K205-1~10] Cutting edge nanotechnology for bio-sensor & 2D materials -Realization of a pandemic-free society with graphene FET sensors capable of rapid detection of human infectious viruses-

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[14p-K205-5] High sensitive virus detection through precise control of surface potential of integrated graphene FET arrays(2)

〇Kazuhiko Matsumoto¹, Kaori Yamamoto¹, Natsuki Sato¹, Mamiko Yano¹, Kiyoji Sakano¹, Eriko Ohnishi,¹, Hidekazu Tanaka¹, Shota Ushiba², Shinsuke Tani², Masahiko Kimura², Yohei Watanabe³ (1.Osaka Univ., 2.Murata Co., 3.Jikei Univ.)

Keywords:

Graphene FET,Bio Sensor,High Sensitivity

For the purpose of highly sensitive and rapid detection of viruses using graphene FET arrays, we have previously reported that the introduction of positively charged polylysine onto the naturally negatively charged graphene surface neutralizes the graphene surface and improves sensitivity. In this study, we further eliminated the effect of physical adsorption of viruses by polylysine, and by varying the concentration of polylysine, we succeeded in obtaining the optimal value and maximizing the sensitivity.