Tin sulfide SKKU GalliumPhosphide P3HT Vac SAM StainlessSteel PinPointMode FastScan VortexCore Metal SSRM GlassTemperature InorganicCompound ScanningThermalMicroscopy Chungnam_National_University TemperatureControl KAIST Heating AnodizedAluminumOxide Polystyrene Nanostructure mechanical property Mechanical Composite molecule Styrene Laser EFM DNA Pinpoint PFM Pzt dielectric trench Mechinical contact