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Article: Anharmonic helical oscillator in single-walled carbon nanotubes

TitleAnharmonic helical oscillator in single-walled carbon nanotubes
Authors
Issue Date2004
Citation
Chinese Journal of Physics, 2004, v. 42 n. 6, p. 673-683 How to Cite?
AbstractThe dynamic behaviour of a particle, as simple as a helium atom, traveling in a single-walled carbon nanotube is investigated. Applying an anisotropic Yukawa-6 potential to the He-C pair interaction and using the symmetry of the tube, we calculate the potential profiles in nanotubes. It was found that each of the three types of nanotubes is endowed with a separate potential profile structure that distinctly reflects its chirality feature. With appropriate initial conditions, the He atom is shown to travel helically along the axis of a nanotube and to longitudinally undergo anharmonic oscillation between its two ends a behaviour which could be ubiquitous within carbon nanotubes. The He atom is moving between the two ends at a supersonic speed, e.g. from 1.8 to 2.5 Mach, and the oscillation frequency is determined by the diameter, length, and chirality of the tube. The helical motion is attributed to the guidance of potential channels, the signature of the chirality in the potential profiles, and to the hopping effect among these channels. © 2004 The Physical Society of the Republic of China.
Persistent Identifierhttp://hdl.handle.net/10722/90824
ISSN
2015 Impact Factor: 0.464
2015 SCImago Journal Rankings: 0.229
References

 

DC FieldValueLanguage
dc.contributor.authorLin, B-Sen_HK
dc.contributor.authorSu, Z-Yen_HK
dc.date.accessioned2010-09-17T10:08:56Z-
dc.date.available2010-09-17T10:08:56Z-
dc.date.issued2004en_HK
dc.identifier.citationChinese Journal of Physics, 2004, v. 42 n. 6, p. 673-683en_HK
dc.identifier.issn0577-9073en_HK
dc.identifier.urihttp://hdl.handle.net/10722/90824-
dc.description.abstractThe dynamic behaviour of a particle, as simple as a helium atom, traveling in a single-walled carbon nanotube is investigated. Applying an anisotropic Yukawa-6 potential to the He-C pair interaction and using the symmetry of the tube, we calculate the potential profiles in nanotubes. It was found that each of the three types of nanotubes is endowed with a separate potential profile structure that distinctly reflects its chirality feature. With appropriate initial conditions, the He atom is shown to travel helically along the axis of a nanotube and to longitudinally undergo anharmonic oscillation between its two ends a behaviour which could be ubiquitous within carbon nanotubes. The He atom is moving between the two ends at a supersonic speed, e.g. from 1.8 to 2.5 Mach, and the oscillation frequency is determined by the diameter, length, and chirality of the tube. The helical motion is attributed to the guidance of potential channels, the signature of the chirality in the potential profiles, and to the hopping effect among these channels. © 2004 The Physical Society of the Republic of China.en_HK
dc.languageengen_HK
dc.relation.ispartofChinese Journal of Physicsen_HK
dc.titleAnharmonic helical oscillator in single-walled carbon nanotubesen_HK
dc.typeArticleen_HK
dc.identifier.emailLin, B:blin@hku.hken_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-15744383124en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-15744383124&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue6en_HK
dc.identifier.spage673en_HK
dc.identifier.epage683en_HK

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