alkanes SAM Graphene DOE Sic Lateral_Force_Microscopy DeoxyribonucleicAcid membrane MoS2 StyreneBeads Topography pinpoint mode HiVacuum Liquid Hexylthiophene Tin disulfide MembraneFilter CalciumHydroxyapatite CP-AFM Chungnam_National_University MultiLayerCeramicCapacitor NUS_Physics OpticalWaveguide nanomechanical MagneticForce contact CHRYSALIS_INC Silver Indent HexagonalBoronNitride graphene_hybrid Polyaniline CarbonNanotube fluoroalkane OxideLayer