Dopped PvdfBead BiVO4 Zhi MultiLayerCeramicCapacitor CNT polyvinyl acetate Dental PolyvinylAcetate ContactModeDots FM-KPFM HiVacuum Fujian Magnets mono_layer temp Materials gallium_nitride Magnetic ThermalProperties LowDensityPolyethylene ForceVolume fluoroalkane Strontium Tapping Memory Change LiIonBattery Writing Lattice SmalScan Polystyrene Gallium_Arsenide FrictionalForce DOE