Polymer NUS PyroelectricDetector Lanthanum_aluminate FM_SKPM Photovoltaics Tape CrossSection HighResolution HardDisk CuFoil Force-distance polyvinyl acetate gallium_nitride TemperatureControllerAFM LiftMode NUS_Physics Boron ScanningKelvinProbeMicroscopy ForceVolumeImage IRDetector BiasMode Led Inorganic_Compound SingleLayer Oxide mechanical property GaP Leakage hetero_structure LDPE FrictionForce Gallium_Arsenide Hafnium_dioxide strontiu_titanate