title: Control of lateral dimension in metal-catalyzed germanium nanowire growth: usage of carbon sheath.
abstract: We report on the catalytic growth of thin carbon sheathed single crystal germanium nanowires (GeNWs), which can solve the obstacles that have disturbed a wide range of applications of GeNWs. Single crystal Ge NW core and amorphous carbon sheath are simultaneously grown via vapor-liquid-solid (VLS) process. The carbon sheath completely blocks unintentional vapor deposition on NW surface, thus ensuring highly uniform diameter, dopant distribution, and electrical conductivity along the entire NW length. Furthermore, the sheath not only inhibits metal diffusion but also improves the chemical stability of GeNWs at even high temperatures.
authors: SKKU Advanced Institute of Nanotechnology, School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Korea.
authors: Byung-Sung
authors: BS
authors: Kim
authors: Min Jin
authors: MJ
authors: Kim
authors: Jong Cheol
authors: JC
authors: Lee
authors: Sung Woo
authors: SW
authors: Hwang
authors: Byoung Lyong
authors: BL
authors: Choi
authors: Eun Kyung
authors: EK
authors: Lee
authors: Dongmok
authors: D
authors: Whang