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 language | English |
|---|---|
| Pages (from-to) | 186-190 |
| Number of pages | 5 |
| Journal | High Pressure Research |
| Volume | 31 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Mar 2011 |
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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 journal › Article
}
TY - JOUR
T1 - Probing structural stability of double-walled carbon nanotubes at high non-hydrostatic pressure by Raman spectroscopy
AU - You, Shujie
AU - Mases, Mattias
AU - Dobryden, Ilya
AU - Green, Alexander A.
AU - Hersam, Mark C
AU - Soldatov, Alexander V.
PY - 2011/3
Y1 - 2011/3
N2 - 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.
AB - 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.
KW - double-walled carbon nanotubes
KW - high pressure
KW - resonance Raman spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=79952935321&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952935321&partnerID=8YFLogxK
U2 - 10.1080/08957959.2011.562897
DO - 10.1080/08957959.2011.562897
M3 - Article
VL - 31
SP - 186
EP - 190
JO - High Pressure Research
JF - High Pressure Research
SN - 0895-7959
IS - 1
ER -