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首页> 外文期刊>Physical review. B, Condensed Matter And Materals Physics >Polarized Raman analysis of aligned double-walled carbon nanotubes
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Polarized Raman analysis of aligned double-walled carbon nanotubes

机译：取向双壁碳纳米管的极化拉曼分析

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摘要

Polarized Raman spectra were obtained from a rope of aligned double-walled carbon nanotubes (DWNTs). The DWNTs exhibit a similar polarization dependence to individual semiconducting single-walled carbon nanotubes and a stronger depolarization effect than multiwalled carbon nanotubes attributed to their fewer shells. Based on group theory analysis and related theoretical predictions, the mode symmetry was identified and consequently we found that the G-band profile consisted of two groups of well-resolved modes related to two constituent tubes of DWNTs. The two constituent tubes generally retain their original mode symmetries and vibrations, suggestive of a weak interlayer interaction.
机译：偏振拉曼光谱是从一条排列的双壁碳纳米管（DWNT）的绳索中获得的。与多壁碳纳米管相比，DWNT与单个半导体单壁碳纳米管表现出相似的极化依赖性，并且由于其壳较少而具有比多壁碳纳米管更强的去极化作用。基于群论分析和相关理论预测，确定了模态对称性，因此我们发现G带谱由与DWNT的两个组成管有关的两组良好分辨的模态组成。这两个组成的管道通常保持其原始模式的对称性和振动，这表明层间相互作用较弱。

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