BTO HiVacuum LightEmiting Morphology Galfenol #Materials DiffractiveOpticalElements FuelCell Temperature medical atomic_steps Cross-section HanyangUniv Etch Litho Magnetic Force Microscopy DNA SThM Vacuum Electical&Electronics AM_SKPM Fiber YttriaStabilizedZirconia Melt Calcite Insulator Chrome Biofilm Hafnium_dioxide Wafer polymeric_arrays Layer Flake PetruPoni kelvin probe force microscopy