BFO gallium_nitride CarbonNanotube Chungnam_National_University FrequencyModulation OpticalElement Fluoride NTU STM PECurve BiFeO3 SiliconCrystal Electrode Perovskite self-assembly Magnetic Polymer Ferrite ElectroDeposition CeramicCapacitor Gallium_Arsenide AM_SKPM Friction Lanthanum_aluminate Switching Polyethylene align Domain Protein Calcite UnivCollegeLondon Ferroelectric Worcester_Polytechnic_Institute DIWafer lift_mode