ContactModeDot Korea HardDiskMedia bias_mode Ram Magnets pulsed_laser_deposition HighResolution Magnetic WPlug Piranha DNA Austenite OpticalModulator Pores Memory CntFilm Cell cross section BariumTitanate Holes Force-distance PhaseTransition NiFe Transparent hard_disk_media BaTiO3 Neodymium Wonseok OxideLayer F14H20 Oxide block_copolymer SingleCrystal AmplitudeModulation