Figure 1

(a) Illustration of a graphene field-effect transistor with liquid-metal source and drain electrodes (LM-GFET); and honey. (b) Raman spectroscopy profile of graphene sample transferred to Polyethylene Terephthalate. Inset: Location of sites A–C. (c) Image of the LM-GFET and (d) representation of charge distribution in electrolytic gate dielectrics comprised of honey.