SolarCell Insulator thermal_property Wonseok Inorganic_Compound Vortex Neodymium MagneticForceMicroscopy contact Sulfur Hexylthiophene PolyvinylAcetate Sapphire Workfunction solar_cell Bacteria DOE Phthalocyanine Thermal Piranha Wafer Implant SICM UnivOfMaryland Materials MonoLayer Battery Ni81Fe19 Polymer atomic_steps Polyurethane Dimethicone Fujian bias_mode Grain