Highly conductive, flexible, and compressible all-graphene passive electronic skin for sensing human touch

Abstract

A facile and passive multiply flexible thin-film sensor is demonstrated based on thermoelectric effects in graphene. The sensor is highly conductive, free-standing, flexible, and elastic. It senses heat and cold, and measures heated/cooled areas; it also discerns human touch from other pressures, locates human touch, and measures pressure levels. All of these sensing abilities are demonstrated without any internal/external power supply.

Keywords: electronic skin; graphene; thermoelectric effects.