PVAP3HT MoirePattern Mechinical piezoelectric force microscopy Edwin Aluminium_Oxide nanobar Conduct Wafer MeltingPoint IISCBangalore SoftSample 2dMaterials suspended_graphene mechanical_property Optical SThM LateralForceMicroscopy Butterfly ItoGlass #EC Mfm TempControl Co/Cr/Pt PinpointNanomechanicalMode HOPG Molybdenum_disulfide heterojunctions BaTiO3 Potential Sperm Pinpoint PFM MembraneFilter Indent FM_KPFM