Wildtype suspended_graphene Floppy ScanningSpreadingResistanceMicroscopy Bacteria NTU Worcester_Polytechnic_Institute Potential MLCC Yeditepe tip_bias_mode Etch PetruPoni SICM PolyvinylAcetate Polydimethylsiloxane GlassTemperature layers AtomicLayer Genetic nanomechanical Cobalt-dopedIronOxide Phase alkanes membrane Crystal Ni81Fe19 Bmp Holes NiFe HighAspect mono_layer HexagonalBoronNitride multi_layer Barium_titanate