[15p-M_278-1~8] 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-

4:15 PM - 4:45 PM JST(7:15 AM - 7:45 AM UTC)

[15p-M_278-8] Development of highly sensitive sensing devices by molecular functionalization of graphene surfaces

〇Kenzo Maehashi^1,2 (1.TUAT Eng., 2.TUAT T-one)

Keywords:

graphene-based FET,Molecular sensing,Molecule recognition elements

Field-effect transistor (FET) based sensors enable rapid and simple electrical detection of target molecules through interactions at the channel surface. We have developed graphene-based FET sensors utilizing the unique properties of graphene as a two-dimensional material. Owing to its high carrier mobility and atomic thickness, graphene allows highly sensitive, label-free detection of minute molecular adsorption in both gas and liquid phases. Graphene FET devices were fabricated using CVD-grown graphene, followed by surface functionalization with molecular receptors and DNA. The effects of functionalization interfaces on electrical sensing responses are discussed, together with recent progress toward applications in environmental monitoring and rapid diagnostics.