Fig. 1
From: Magnetic Graphene Field-Effect Transistor Biosensor for Single-Strand DNA Detection
Functionalization and detection principle of the MGFETs. a Graphene film grown by chemical vapor deposition. b Functionalization of graphene by PBASE. c Immobilization of probe aptamer via PBASE. d Hybridization of the probe aptamer with cDNA. e Photograph of the detection device