Multilayered graphene grafted copper wires
- Multilayered graphene grafted copper wires
- 황준연; 손동익; 장이운; Luman Zhang; Mariela Menghini; Hyunjin Cho; Jean-Pierre Locquet; Jin Won Seo
- graphene; copper wires; Multilayered; grafted; chemical vapor deposition
- Issue Date
- VOL 139-671
- Multilayered graphene is grown on copper (Cu) wires by chemical vapor deposition. Mechanical, chemical, thermal and electrical performances are investigated as a function of growth conditions. The graphene layer which makes a volume of approximately 0.02% of the Cu wire enables a 28– 37% improvement on tensile strength and strain-to-failure. The chemical resistance of graphene grafted Cu wires increases by 1.5– 3 times in nitric acid, aqua regia, and 1M ammonium persulfate etchants. The electrical resistivity of graphene grafted Cu wires remains almost constant with increasing temperature up to 175  °C, while the resistivity degradation of Cu wires without graphene starts to increase from 70  °C. We demonstrate that graphene can protect the Cu wire from thermal oxidation and chemical etchants and can effectively enhance the mechanical and electrical properties of the Cu wire.
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