Jason Vac Potential BoronNitride Vortex Ceramic Reading optoelectronics Magnetic Force Microscopy Grain Titanate SingleCrystal ULCA DIWafer LateralPFM C_AFM conductive PvdfBead INSP sputter PolycrystallineFerroelectricBCZT PANI Terrace ForceMapping temp_control ImideMonomer Litho Vacuum Blend Vinylpyridine Aggregated_molecules Chemical_Vapor_Deposition gallium_nitride LiftHeight Magnetic