PiezoelectricForceMicroscopy ShenYang HydroGel BismuthVanadate Protein Terrace Ecoli INSPParis BreastCancerCell mfm_amplitude Defects InLiquid HACrystal FFM Scratch SicMosfet Mapping PolyvinylideneFluoride Sulfur TiO2 Liquid Butterfly Polyvinylidene_fluoride InorganicCompound Defect molecules GalliumPhosphide MagneticArray mechanical property Sidewall ThermalProperties DOE Array LateralPFM SPMLabs