PinPointMode STO HighResolution hydrocarbon AIN KelvinProbeForceMicroscopy thermal_property KAIST MagneticArray multi_layer Microchannel FM_KPFM Korea Ca10(PO4)6(OH)2 Crystal Mfm Trench HighAspect SolarCell small_scan mono_layer Oxide Photovoltaics Graphite fluorocarbon FM_SKPM Pipette Ananth OpticalWaveguides FM-KPFM Polytetrafluoroethylene LiquidCell Fet Hexacontane ReflexLens