Layer-tunable graphene has attracted broad interest for its potentials in nanoelectronics applications.[1,2] However,synthesis of layer-tunable graphene by
Ⅲ-Ⅴ compound semiconductor materials grown on elemental semiconductor substrates have attracted much attention due to their high mobility and direct bands
Although titanium(Ti)based medical devices have been used clinically for more than 30 years,there are still weaknesses for them that need to be resolved.The