FM-KPFM Self-assembledMonolayer oxide_layer HardDisk Dopped Aluminum TPU FM_KPFM Composition graphene_hybrid polymeric_arrays SKPM fluorocarbon HexagonalBN SPMLabs Conductivity TiO2 Electrode Multiferroic_materials Al2O3 nanomechanical Pvdf GranadaUniv atomic_steps Vac MolybdenumDisulfide fe_nd_b OpticalWaveguide tip_bias_mode Polarization Microchannel OpticalWaveguides Pinpoint ImideMonomer LiNbO3