FM_SKPM PatternedSapphireSubstrat molecule Hafnia ThermalConductivity KAIST PinPointMode Cross-section PVA Nickel Patterns LateralForceMicroscopy OpticalWaveguides OpticalElement MfmAmplitude PDMS Cobalt PhthalocyaninePraseodymium Tapping Friction AlkaneFilm Strontium GalliumPhosphide CrossSection Piranha University_of_Regensburg ThermalProperties Implant Graphite self_healing BiVO4 LMF FrictionalForce BaTiO3 CopperFoil