부산대학교 도서관

High performance biofunctionalized field effect transistors (BioFETs) use nanoscale electronic materials such as silicon nanowires (SiNWs), carbon nanotubes (CNT) and graphene for the sensing application. Specific focus will be on high-performance, low-cost, scalable, and reliable biofunctionalized field effect transistor (BioFET) based on graphene. We attempted to build the graphene based sensing device on silicon substrate. We are proposing a biosensor where graphene could be used as a channel material and extended gate for ion detection. The idea is to combine existing concepts of biosensors based on ion-sensitive field-effect transistor (ISFET) and chemically modified field-effect transistors (CHEMFET), and implement it on a new Graphene nanoribbons (GNR) based BioFET. Both ISFET and CHEMFET concepts are based on floating-gate transistor operation similar to that of Flash memory design. In this paper, we will explore regular transistor based graphene FET (GFET) intended for biosensing application.