PinpointPFM Non-ContactMode Growth PhaseChange Polyimide Growing fluoroaalkane BTO semifluorinated_alkane Ca10(PO4)6(OH)2 Switching Bio Graphite IISCBangalore TempControl MultiferroicMaterials oxide_layer BismuthFerrite ForceMapping SiliconOxide LFM LiftMode HDD light_emission kelvin probe force microscopy dichalcogenide Mfm CuSubstrate Self-assembledMonolayer Plug Sapphire Oxidation Varistor PDMS Sic