Collagen MonoLayer ElectrostaticForceMicroscopy P3HT ScanningSpreadingResistanceMicroscopy hetero_structure BFO YttriaStabilizedZirconia layers Morphology SiliconOxide NUS_Physics Solar Galfenol ForceDistanceSpectroscopy molecular_beam Filter Barium_titanate Formamidinium_lead_iodide Imprint FFM HBN OpticalWaveguide DNA Monisha Epoxy PvdfBead Polymer IISCBangalore Ferroelectric SThM Deposition Iron single_layer Tape