He Yan-yang, Zhang Hai-yan, Wu Chun-yan, Zhu Yan-juan, Liang Yuan-bo, Chen Yi-ming
Department of Applied Physics, Guangdong University of Technology, Guangzhou 510090, China.
Guang Pu Xue Yu Guang Pu Fen Xi. 2002 Aug;22(4):584-7.
Carbon nanotubes are produced in two kinds of inert atmosphere at the pressure range of 11 to 92 kPa by arc discharge. First- and second-order Raman spectra of these samples have been measured and compared with each other. It is found that the position and bandwidth of the spectral lines depend on the kind of inert gases and their pressure. The Raman spectra of the nanotubes produced in argon gas are much more similar to that of polycrystalline graphite than those of the nanotubes produced in helium gas. The position and bandwidth of nanotubes Raman peaks also change with gas pressure in arc discharge. The Raman spectra of nanotubes produced in high pressure are much more like the graphite than those produced in lower pressure.
通过电弧放电在11至92 kPa的压力范围内于两种惰性气氛中制备碳纳米管。已测量了这些样品的一阶和二阶拉曼光谱并进行了相互比较。发现谱线的位置和带宽取决于惰性气体的种类及其压力。与在氦气中制备的纳米管相比，在氩气中制备的纳米管的拉曼光谱与多晶石墨的拉曼光谱更为相似。纳米管拉曼峰的位置和带宽也会随着电弧放电中的气体压力而变化。在高压下制备的纳米管的拉曼光谱比在低压下制备的纳米管的拉曼光谱更类似于石墨。
