Temperature-Dependent Coherent Tunneling across Graphene-Ferritin Biomolecular Junctions.

ABSTRACT: Understanding the mechanisms of charge transport (CT) across biomolecules in solid-state devices is imperative to realize biomolecular electronic devices in a predictive manner. Although it is well-accepted that biomolecule-electrode interactions play an essential role, it is often overlooked. This paper reveals the prominent role of graphene interfaces with Fe-storing proteins in the net CT across their tunnel junctions. Here, ferritin (AfFtn-AA) is adsorbed on the graphene by noncovalent amine-graphene interactions confirmed with Raman spectroscopy. In contrast to junctions with metal electrodes, graphene has a vanishing density of states toward its intrinsic Fermi level ("Dirac point"), which increases away from the Fermi level. Therefore, the amount of charge carriers is highly sensiti

SUBMITTER: Gupta NK 

PROVIDER: S-EPMC9542697 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature