Switching FM-KPFM Epoxy Flake CVD FrequencyModulation Polystyrene VerticalPFM EPFL food piezoelectric force microscopy biocompatible 2dMaterials Chrome LogAmplifier Aluminium_Oxide Collagen OpticalModulator SiliconeOxide TappingMode CntFilm organic_polymer SrTiO3 FuelCell Copper Butterfly PolymerBlend SThM Domain molecule Techcomp Self-assembledMonolayer CP-AFM OrganicSemiconductor Spincast