DataStorage AlkaneFilm non_contact LateralForce Chungnam_National_University PinpointPFM Calcite block_copolymer Inorganic_Compound fluoroaalkane tip_bias_mode Electical&Electronics Wonseok vertical_PFM MagneticArray Ananth MagneticForce PDMS CBD Conductivity CalciumHydroxide Liquid OpticalWaveguides Gold Graphene Holes strontiu_titanate AM_KPFM self-assembled_monolayer organic_polymer MultiLayerCeramicCapacitor PvdfFilm Tapping Nanofiber Vinylpyridine