WS2 lithography molecular_beam Pyroelectric Yttria_stabilized_Zirconia Regensburg Polydimethylsiloxane BFO HBN Morphology Potential Growth MfmPhase ring shape Au111 Electrical&Electronics Optical Spain Battery Galfenol STO TriGlycineSulphate FM_SKPM Polarization SingleCrystal NusEce WWafer GaAs MultiLayerCeramicCapacitor Fendb kelvin probe force microscopy Floppy thermal_conductivity LiNbO3 SicMosfet