Calcium Gong NusEce CNT NiFe kelvin probe force microscopy plastic SRAM AtomicSteps solar_cell Friction Moire Microchannel single_layer Array I-VSpectroscopy DomainSwitching domain_switching Sulfur Croatia Multiferroic_materials MultiLayerCeramicCapacitor PtfeMembrane Austenite GlassTemp thermal_property cooling PpLdpe Vortex nanobar Polymer fe_nd_b 3-hexylthiophene medical Hydroxyapatite