MfmPhase WS2 Hair FrequencyModulation TungstenDeposition Vac LiNbO3 Polyethylene DIWafer MultiferroicMaterials ForceVolume CaMnO3 cross section LateralPFM OpticalWaveguides Multiferroic_materials Metal-organicComplex Polytetrafluoroethylene Fet PpLdpe Potential Piezo INSP 3-hexylthiophene STO Hydroxyapatite blended polymers Oxide HighResolution Thermoplastic_polyurethane FastScan nanomechanical Foil Defect Calcite