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Probing structural stability of double-walled carbon nanotubes at high non-hydrostatic pressure by Raman spectroscopy
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-6877-9282
Department of Materials Science and Engineering, Northwestern University, Evanston, IL.
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2011 (English)In: High Pressure Research, ISSN 0895-7959, E-ISSN 1477-2299, Vol. 31, no 1, p. 186-190Article in journal (Refereed) Published
Abstract [en]

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 633 nm 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 35 GPa, 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.

Place, publisher, year, edition, pages
2011. Vol. 31, no 1, p. 186-190
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Fysik
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URN: urn:nbn:se:ltu:diva-10761DOI: 10.1080/08957959.2011.562897ISI: 000288660500037Scopus ID: 2-s2.0-79952935321Local ID: 99dd6856-ab6a-41a9-8651-ff965213d108OAI: oai:DiVA.org:ltu-10761DiVA, id: diva2:983708
Note
Validerad; 2011; 20110415 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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You, ShujieMases, MattiasDobryden, IlliaSoldatov, Alexander

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