Holes Lift GranadaUniv kelvin probe force microscopy HanyangUniv PrCurve Writing Scratch heterojunctions #Materials Praseodymium PolycrystallineFerroelectricBCZT Wildtype Blend optoelectronics aluminum_nitride TransitionMetal Inorganic_Compound FloppyDisk dielectric trench BiFeO3 Galfenol AmplitudeModulation Conduct HOPG NusEce Polyvinylidene Monisha Gallium KAIST PinpointNanomechanicalMode UTEM medical Flake MESA structure