Fiber HardDiskMedia Composition Perovskite AM-KPFM Korea NanoLithography biocompatible Mapping self_assembly Adhesion P3HT MESA structure NtuEee Piezoresponse MolybdenumDisulfide bias_mode light_emitting ShenYang Hafnium_dioxide Corrosion Temasek_Lab conductive Strontium ForceVolume pulsed_laser_deposition NTU WS2 Morphology Transparent ContactMode Polyethylene LateralForce temp_control Domain