Raman spectra of double-wall carbon nanotubes under extreme uniaxial stress.
basic_science · Level V
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- Record sourced from PubMed, PMID 18593203.
- Also identified by DOI 10.1021/nl080760o.
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Abstract
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.