Probing structural stability of double-walled carbon nanotubes at high non-hydrostatic pressure by Raman spectroscopy

Shujie You, Mattias Mases, Ilya Dobryden, Alexander A. Green, Mark C Hersam, Alexander V. Soldatov

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Theoretical calculations predict that the collapse pressure for double-walled carbon nanotubes (DWCNTs) is proportional to 1/R3, where R is the effective or average radius of a DWCNT. In order to address the problem of CNT stability at high pressure and stress, we performed a resonance Raman study of DWCNTs dispersed in sodium cholate using 532 and 633nm laser excitation. Raman spectra of the recovered samples show minor versus irreversible changes with increasing ID/IG ratio after exposure to high non-hydrostatic pressure of 23 and 35GPa, respectively. The system exhibits nearly 70% pressure hysteresis in radial breathing vibrational mode signals recovery on pressure release which is twice that predicted by theory.

Original languageEnglish
Pages (from-to)186-190
Number of pages5
JournalHigh Pressure Research
Volume31
Issue number1
DOIs
Publication statusPublished - Mar 2011

Fingerprint

structural stability
Raman spectroscopy
carbon nanotubes
breathing
vibration mode
recovery
hysteresis
sodium
Raman spectra
radii
excitation
lasers

Keywords

  • double-walled carbon nanotubes
  • high pressure
  • resonance Raman spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Probing structural stability of double-walled carbon nanotubes at high non-hydrostatic pressure by Raman spectroscopy. / You, Shujie; Mases, Mattias; Dobryden, Ilya; Green, Alexander A.; Hersam, Mark C; Soldatov, Alexander V.

In: High Pressure Research, Vol. 31, No. 1, 03.2011, p. 186-190.

Research output: Contribution to journalArticle

You, Shujie ; Mases, Mattias ; Dobryden, Ilya ; Green, Alexander A. ; Hersam, Mark C ; Soldatov, Alexander V. / Probing structural stability of double-walled carbon nanotubes at high non-hydrostatic pressure by Raman spectroscopy. In: High Pressure Research. 2011 ; Vol. 31, No. 1. pp. 186-190.
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