oxide_layer Corrosion Monisha ScratchMode Pinpoint PFM Silver PUR NeodymiumMagnets TiO2 Fet PANI Wonseok Trench thermoplastic_elastomers UnivMaryland non_contact MultiferroicMaterials blended polymers kelvin probe force microscopy Molybdenum Blend HexagonalBoronNitride Patterns PetruPoni_Institute Adhesive SmallScan Electronics Pyroelectric WWafer ShenYang LifeScience biocompatible tip_bias_mode Oxide aluminum_nitride