Conductance Liquid HardDisk SThM small_scan Polyvinylidene SiWafer Granada NusEce Ram SPMLabs Ito TappingMode Tungsten_disulfide HighAcpectRatio NiFe HardDiskMedia Magnetic Force Microscopy Glass LFM FAFailureAnlaysis China Edwin Typhimurium KAIST kelvin probe force microscopy Ca10(PO4)6(OH)2 mechanical property Oxidation Al2O3 Alkane cannabidiol LiquidCell DIWafer Graphene