Design and simulation of graphene majority gate without back-gating

Graphene is a two-dimensional carbon allotrope with excellent biocompatibility allowing for safe integration in living tissue and is stable in harsh biological environments. Graphene has also very high electron mobilities and long carrier mean-free paths and is a very promising material for new nanoelectronic circuits. Here we present the design and simulation of a graphene Majority logic gate without back-gating, which can be fabricated on one side of the graphene sheet leaving the other free so that the gate can be brought into contact with biological tissue. Graphene majority gates can also operate as AND or OR gates giving rise to new carbon-based nanoelectronic devices for biomedical circuits.