Raman Spectra of Double-Wall Carbon Nanotubes under Extreme Uniaxial Stress

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• 作者：Elena del Corro ; Jesu&#769 ; s Gonza&#769 ; lez ; Mercedes Taravillo ; Emmanuel Flahaut ; Valenti&#769 ; n G. Baonza
• 刊名：Nano Letters
• 出版年：2008
• 出版时间：August 2008
• 年：2008
• 卷：8
• 期：8
• 页码：2215-2218
• 全文大小：162K
• 年卷期：v.8,no.8(August 2008)
• ISSN：1530-6992

文摘

We investigated the pressure dependence of the Raman frequencies and intensities of the D and G bands of double-wall carbon nanotubes under strong uniaxial conditions. Using moissanite anvils, we observed for the first time the evolution of the D band under extreme stress/pressure conditions. We find that the difference between D and G frequencies remains constant over the whole stress range. In addition, we observe that double-wall carbon nanotubes behave elastically up to the maximum uniaxial stress reached in our experiments, which is estimated to be about 12 GPa.