FrequencyModulation PVAC Logo ElectroChemical Layer Polyaniline STO Subhajjit Polyurethane Conductive AFM Insulator Korea FM-KPFM Molybdenum Sapphire C_AFM SelfAssembly BiVO4 MfmAmplitude Memory gallium_nitride Optical KevlarFiber Microchannel polymeric_arrays phase_change Mfm suspended_graphene Sphere NtuEee YszSubstrate margarine StrontiuTitanate AmplitudeModulation PyroelectricDetector