PrCurve Varistor doped hard_disk Piezo InsulatorFilm Ananth NUSNNI Sidewall C_AFM Polydimethylsiloxane Tapping BiVO4 BTO FrictionalForce NTU LowDensityPolyethylene PetruPoni_Institute Foil Solar ConductiveAFM Barium_titanate Formamidinium_lead_iodide MechanicalProperty CalciumHydroxyapatite SSRM Korea CeramicCapacitor TipBiasMode cross section Metal-organicComplex piezoelectric force microscopy Friction Sapphire Tungsten_disulfide