SmalScan Film pulsed_laser_deposition ElectrostaticForceMicroscopy EFMAmplitude aluminum_nitride piezoelectric force microscopy SKPM Hexylthiophene Nanotechnology LiBattery nanobar Chungnam_National_University molecular_beam C_AFM HanyangUniv Typhimurium HydroGel Composition Phthalocyanine GaAs self-assembly align Liquid cross section TransitionMetal Flake CompactDisk SSRM SiliconOxide SFAs block_copolymer Self-assembledMonolayer Metal GlassTemperature