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Single walled carbon nanotubes at ultra-high pressure/stress
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
2013 (English)In: Bulletin of the American Physical Society, 2013, Vol. 58Conference paper, Meeting abstract (Refereed)
Abstract [en]

We report on the first study of single walled nanotubes (SWCNTs) synthesized by HiPCO method under pressure/stress up to 70 GPa aimed at probing structural stability of small diameter SWCNTs and synthesis of new nanostructured carbon phases. Firstly, the material has been exposed to 25 GPa. Raman spectra of the recovered of material exhibited extremely high defect density and evident recovery of the radial breathing mode (RBM) band with some intensity profile alteration. Secondly, the material was pressurized subsequently to 70 GPa followed by a relatively fast pressure release. Raman characterization provides indications of a transformation of the material to a new structural state as the result of the second pressure cycle. We discuss the structural evolution of the system en-route the final structure which is presumably comprised of deformed graphene nanoribbons and/or polymerized CNTs in addition to the smallest diameter SWCNTs which survived ultra-high pressure/stress.

Place, publisher, year, edition, pages
2013. Vol. 58
Research subject
Experimental physics
Identifiers
URN: urn:nbn:se:ltu:diva-35212Local ID: 9a63b4a7-a217-4c9c-9d06-728970ab68b7OAI: oai:DiVA.org:ltu-35212DiVA: diva2:1008464
Conference
Biennial International Conference of the APS Topical Group on Shock Compression of Condensed Matter held in conjunction with the 24th Biennial Intl. Conference of the Intl. Association for the Advancement of High Pressure Science and Technology (AIRAPT) : 07/07/2013 - 12/07/2013
Note
Godkänd; 2013; 20130821 (maxnoe)Available from: 2016-09-30 Created: 2016-09-30Bibliographically approved

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http://www.aps.org/meetings/baps/archives-2013.cfmhttp://meetings.aps.org/Meeting/SHOCK13/Session/F1.41

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