domain_switching LiftHeight PpLdpe molecule light_emission Bismuth Oxidation Au111 STM NiFe cross section PS_PVAC Polyethylene electrospinning CopperFoil FloppyDisk Polytetrafluoroethylene KevlarFiber Bacterium Conducting TiO2 SmalScan Titanate Hole 2-vinylpyridine TriGlycineSulphate piezoelectric force microscopy dielectric_trench UTEM Yttria_stabilized_Zirconia University_of_Regensburg DOE polyvinyl acetate CrystalGrowing Optoelectonics