self-assembly cooling WPlug Nanostructure ContactModeDot graphene_hybrid Wafer Polyethylene Photovoltaics Bio KAIST self-assembled_monolayer Array C_AFM Ni81Fe19 neodymium_magnets Biofilm Defects UTEM dielectric trench Genetic IRDetector MoS2 Pyroelectric Oxide Iron Techcomp EFM Sphere MeltingPoint TemperatureControlledAFM FrequencyModulation Nanofiber PhaseChange piezoelectric force microscopy