LeakageCurrent multi_layer dielectric_trench NTU University_of_Regensburg DomainSwitching Transparent molecular_beam ForceVolume Styrene Cross-section Ni-FeAlloy SICM bias_mode Dr.JurekSadowski NUS PinpointNanomechanicalMode LithiumNiobate Pores ShenYang medical ThinFilm Ferrite Optoelectronic C_AFM CrAu Boron Reading ScratchMode Sidewall Global_Comm Alloy Silicon OpticalWaveguide TemperatureControlledAFM