Ultra-Thin Double-Walled Carbon Nanotubes： A Novel Nanocontainer for Preparing Atomic Wires  

作　　者：Lei Shi Leimei Sheng Liming Yu Kang An Yoshinori Ando Xinluo Zhao 

机构地区：[1]Department of Physics, and Institute of Low-Dimensional Carbons and Device Physics, Shanghai University, Shanghai 200444, China [2]Department of Materials Science and Engineering, Meijo University, Nagoya 468-8502, Japan

出　　处：《Nano Research》2011年第8期759-766,共8页纳米研究（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China （Grant No. 10974131）, the Nanotechnology Program of Shanghai Science and Technology Committee （No. 0952nm07100）, the Scienceand Technology Innovation Fund of the Shanghai Education Committee （No. 09ZZ85） and Shanghai Pujiang Talent Plan （No. 08PJ1405100）. We thank Professor Shoushan Fan of Tsinghua-Foxconn Nanotechnology Research Center for the HRTEM measurements, and Professor Pingheng Tan of the Institute of Semiconductors for some of the Raman measurements.

摘　　要：Double-walled carbon nanotubes （DWCNTs） with high graphitization have been synthesized by hydrogen arc discharge. The obtained DWCNTs have a narrow distribution of diameters of both the inner and outer tubes, and more than half of the DWCNTs have inner diameters in the range 0.6-1.0 nm. Field electron emission from a DWCNT cathode to an anode has been measured, and the emission current density of DWCNTs reached 1 A/cm2 at an applied field of about 4.3 V/~tm. After high-temperature treatment of DWCNTs, long linear carbon chains （C-chains） can be grown inside the ultra-thin DWCNTs to form a novel C-chain@DWCNT nanostructure, showing that these ultra-thin DWCNTs are an appropriate nanocontainer for preparing truly one-dimensional nanostructures with one-atom-diameter.有高 graphitization 的双 walled 碳 nanotubes (DWCNT ) 被氢弧分泌物综合了。获得的 DWCNT 有两个的直径的狭窄的分布内部、外部的试管，并且在范围多于 DWCNT 的一半有内部直径 0.61.0 nm。到阳极的从 DWCNT 阴极的地电子排放被测量了，并且 DWCNT 的排放电流密度在大约 4.3 V/m 的一块应用的地到达了 1 A/cm2。在 DWCNT 的高温度的处理以后，长线性的碳链(C 链) 能在极端薄的 DWCNT 内被种形成新奇 C-chain@DWCNT nanostructure，证明这些极端薄的 DWCNT 是为准备有 one-atom-diameter 的真正一个维的 nanostructures 的适当 nanocontainer。

关 键 词：Arc discharge carbon chains double-walled carbon nanotubes field electron emission NANOCONTAINER NANOWIRES 

分 类 号：TQ053.2[化学工程] TB383[一般工业技术—材料科学与工程]