ChemicalCompound GalliumPhosphide Mobile TipBiasMode PolyvinylAcetate MechanicalProperty ScanningTunnelingMicroscopy polyvinyl acetate Grain ForceVolume Multiferroic_materials SiWafer NUS Polymer MfmAmplitude OpticalModulator ScanningIon-ConductanceMicroscopy self-assembly ito_film nanobar TungstenThinFilmDeposition Step Chungnam_National_University polymeric_arrays Indium_tin_oxide Collagen rubber InLiquid Display BiasMode Lattice Magnetic MagneticPhase LateralForce LiNbO3