Indent ShenYang IVSpectroscopy Optoelectronic MESA structure contact fe_nd_b Polyvinylidene_fluoride Mosfet oxide_layer PiezoelectricForceMicroscopy Conductance LiquidCell PinpointNanomechanicalMode BismuthFerrite SiliconeOxide self_healing Bacteria PMNPT ContactModeDots Biology VortexCore doped Ptfe semifluorinated_alkane UnivMaryland BiasMode Magnets Ferrite Chrome membrane Polyimide single_layer ScanningSpreadingResistanceMicroscopy light_emission