AtomicSteps heterojunctions Chungnam_National_University Materials Vortex SPMLabs OpticalWaveguide HOPG Ca10(PO4)6(OH)2 MetalCompound HexagonalBoronNitride MechanicalProperties EPFL Fet NanoLithography solar_cell ConductingPolymer medical cooling blended polymers PolyimideFilm Molybdenum_disulfide Calcium fe_nd_b FM_SKPM Oxide Tape SAM SiliconCrystal chemical_compound HBN Aggregated_molecules Dimethicone Magnetostrictive Terrace