Nanopattern MagneticArray Floppy PolycrystallineFerroelectricBCZT nanobar ForceDistanceSpectroscopy Sadowski membrane YttriaStabilizedZirconia LDPE Beads Piranha Trench BaTiO3 Optoelectronic Ni-FeAlloy Patterns Change GaN atomic_steps WWafer bias_mode FM-KPFM Conductivity ring shape BismuthVanadate PolyStylene Defects Lattice SiWafer blended polymers AlkaneFilm vertical_PFM Pvdf KevlarFiber