ForceVolume HiVacuum Global_Comm Lateral Techcomp thermal_property Gold cross section MagneticForce InorganicCompound Mfm Led neodymium_magnets Polystyrene University_of_Regensburg KelvinProbeForceMicroscopy Polyimide Imprint contact LiquidCell Polyethylene Current Beads kelvin probe force microscopy Defects Adhesion Wang Hafnium_dioxide CarbonNanotube Mapping dichalcogenide MBE DOE DeoxyribonucleicAcid high_resolution