TiO2 Piranha mechanical_property H-BN Chloroform TemperatureControllerStage Scratch SKKU ForceVolume plastics Magnetic Cell Topography Annealed Pzt mono_layer molecular_beam Genetic NanoLithography ThinFilm non_contact Polyurethane Gallium ConductingPolymer domain_switching Biofilm Alkane MultiferroicMaterials Gallium_Arsenide Aluminium_Oxide Tape INSP tip_bias_mode GalliumPhosphide Chungnam_National_University