碳纳米管
拉曼光谱
材料科学
碳纤维
手性(物理)
物理
纳米技术
物理化学
手征对称性
化学
核物理学
量子力学
夸克
Nambu–Jona Lasinio模型
复合数
复合材料
作者
Hagen Telg,Juan G. Duque,Matthias Staiger,Xiaomin Tu,Frank Hennrich,Manfred M. Kappes,Ming Zheng,Janina Maultzsch,C. Thomsen,Stephen K. Doorn
出处
期刊:ACS Nano
[American Chemical Society]
日期:2011-12-18
卷期号:6 (1): 904-911
被引量:88
摘要
Raman spectroscopy on the radial breathing mode is a common tool to determine the diameter d or chiral indices (n,m) of single-wall carbon nanotubes. In this work we present an alternative technique to determine d and (n,m) based on the high-energy G– mode. From resonant Raman scattering experiments on 14 highly purified single chirality (n,m) samples we obtain the diameter, chiral angle, and family dependence of the G– and G+ peak position. Considering theoretical predictions we discuss the origin of these dependences with respect to rehybridization of the carbon orbitals, confinement, and electron–electron interactions. The relative Raman intensities of the two peaks have a systematic chiral angle dependence in agreement with theories considering the symmetry of nanotubes and the associated phonons.
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