MESA structure ContactModeDot HDD BoronNitride Microchannel Graphite HexacontaneFilm Oxidation FrictionalForceMicroscopy Inorganic Chrome Wonseok Styrene fluorocarbon LateralPFM Growth MfmPhase Optoelectonics Ram Polytetrafluoroethylene TriGlycineSulphate AAO StainlessSteel DNAProtein EFM Ucl MfmAmplitude ScanningKelvinProbeMicroscopy Piezo Cobalt-dopedIronOxide Polyvinylidene_fluoride nanobar PUR Sapphire FrictionForce