| Abstract Scope |
Graphene, a representative two-dimensional material, has excellent electronic properties due to its high mobility and specific surface area. Biosensors based on graphene field-effect transistor (GFET) are expected to be applied in various fields such as medical diagnosis, environmental monitoring, and security management. In this study, we developed a new technique to detect an odor molecule, which is relatively small and volatile. We utilized rationally designed peptides as a molecular scaffold and probe peptides on graphene surface. Then, we performed odor sensing with GFETs to detect limonene, a representative molecule for the smell of lemons. We successfully detected limonene with high sensitivity in an electrical manner. This work was supported by the Cabinet Office (CAO), Cross-ministerial Strategic Innovation Promotion Program (SIP), “An intelligent knowledge processing infrastructure, integrating physical and virtual domains” (funding agency: NEDO). |