Permalloy Ni-FeAlloy Melt Calcium biocompatible high_resolution piezoelectric force microscopy Vinylpyridine chemical_compound HOPG Polyvinylidene Gallium_Arsenide Cell Change CrystalGrowing ThermalProperties VortexCore Wildtype Chloroform TemperatureControllerAFM PFM Alloy optoelectronics Nanotechnology SPMLabs CastIron Glass IndiumTinOxide Ram Ceramic GaAs Hole DeoxyribonucleicAcid Current Aluminium_Oxide