HighAspect SiliconCrystal PtfeMembrane Writing kelvin probe force microscopy Mechanical&nanotechnology molecular_self_assembly SThM SoftSample CNT Scanning_Thermal_Microscopy ULCA Defect fluoroaalkane BismuthFerrite Polymer Butterfly Led Temasek_Lab FM_SKPM Worcester_Polytechnic_Institute FrequencyModulation Chungnam_National_University PVAC Aggregated_molecules Heating Electrical&Electronics OpticalWaveguides MechanicalProperty GranadaUniv Fiber Flake BariumTitanate GaAs plastics