kelvin probe force microscopy CeNSE_IISc Temperature PhaseTransition Resistance fluorocarbon NtuEee DomainSwitching light_emitting Blood CeramicCapacitor Treatment BismuthFerrite Dopped Gold ScratchMode hetero_structure Typhimurium University_of_Regensburg VortexCore Grain Styrene SmalScan Nanopattern Nickel Step InsulatorFilm IRDetector Trench CompactDisk light_emission piezoelectric force microscopy NeodymiumMagnets Platinum AM-KPFM