HardDisk cooling Chloroform NiFe Mobile PinpointNanomechanicalMode Tungsten mechanical property ElectrostaticForceMicroscopy Fiber Pinpoint frequency_modulation cross section KAIST PolyvinylideneFluoride Multiferroic_materials Moire Hexylthiophene Scanning_Thermal_Microscopy Ito Transparent Lattice IVSpectroscopy vertical_PFM Regensburg fifber DOE ScanningSpreadingResistanceMicroscopy IRDetector Stiffness PUR Silver ring shape StainlessSteel Annealing