Led oxide_layer AEAPDES Nanostructure Barium_titanate Conductance KelvinProbeForceMicroscopy Mosfet ForceVolume ChemicalCompound fifber Metal Vinylpyridine LiquidCrystal light_emission Gong plastic Hafnia gallium_nitride LiquidCell FrictionForce Magnetostrictive FM-KPFM Kevlar Piezoelectric Force-distance Piezo SingleCrystal PECurve pinpoint mode InorganicCompound Alloy KPFM NusEce GaN