title: Electromechanical sensing of substrate charge hidden under atomic 2D crystals.
abstract: The functionality of graphene and other two-dimensional materials in electronic devices is highly influenced by the film-substrate charge transfer affecting local carrier density. We demonstrate that charges buried under the few layer graphene on/in the insulating substrate can be detected using electromechanical actuation of the conductive atomically thin layers, allowing measurements of areal density of film-substrate transferred charges under few layer graphene and MoS2 suspended films.
authors.affiliation: Department of Physics, Lancaster University , Lancaster LA1 4YB, U.K.
authors.forename: Nicholas D
authors.initials: ND
authors.lastname: Kay
authors.forename: Benjamin J
authors.initials: BJ
authors.lastname: Robinson
authors.forename: Vladimir I
authors.initials: VI
authors.lastname: Fal'ko
authors.forename: Konstantin S
authors.initials: KS
authors.lastname: Novoselov
authors.forename: Oleg V
authors.initials: OV
authors.lastname: Kolosov