Tungsten_disulfide FM_SKPM doped AIN ForceDistanceSpectroscopy PECurve Temperature Sic GalliumPhosphide PtfeFilter Mobile Spain FloppyDisk Defects Anneal BlockCopolymer kelvin probe force microscopy ForceVolume Topography C60H122 VortexCore suspended_graphene Gallium_Arsenide atomic_steps UnivCollegeLondon FAPbI3 CalciumHydroxyapatite Imprint self_healing epitaxy Tungsten PVAP3HT CaMnO3 Chrome CuParticle