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Article: A tribological study of double-walled and triple-walled carbon nanotube oscillators

TitleA tribological study of double-walled and triple-walled carbon nanotube oscillators
Authors
Issue Date2005
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/nano
Citation
Nanotechnology, 2005, v. 16 n. 8, p. 1253-1264 How to Cite?
AbstractWe reported in a previous study (Zhao et al 2003 Phys. Rev. Lett. 91 175504) that energy transfer from the orderly intertube translational oscillation to intratube vibrational modes for an isolated system of two coaxial carbon nanotubes at low temperatures takes place primarily via two distinct types of collective motion of the carbon nanotubes, i.e., off-axial rocking motion of the inner tube and radial wavy motion of the outer tube, and that these types of motion may or may not occur for such a system, depending upon the amount of the initial extrusion of the inner tube out of the outer tube. Our present study, using micro-canonical molecular dynamics (MD), indicates the existence of an energy threshold, largely independent of system sizes and configurations, for a double-walled nano-oscillator to deviate from the intertube translational oscillation and thus to encounter significant intertube friction. The frictional forces associated with several distinct dissipative mechanisms are all found to exhibit no proportional dependence upon the normal force between the two surfaces in relative sliding, contrary to the conventional understanding resulting from tribological studies of macroscopic systems. Furthermore, simulation has been performed at different initial temperatures, revealing a strong temperature dependence of friction in the early phase of oscillation. Finally, our studies of three-walled nano-oscillators show that an initial extrusion of the middle tube can cause inner-tube off-axial instabilities, leading to strong frictional effects. © 2005 IOP Publishing Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/70218
ISSN
2015 Impact Factor: 3.573
2015 SCImago Journal Rankings: 1.196
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMa, CCen_HK
dc.contributor.authorZhao, Yen_HK
dc.contributor.authorYam, CYen_HK
dc.contributor.authorChen, Gen_HK
dc.contributor.authorJiang, Qen_HK
dc.date.accessioned2010-09-06T06:20:49Z-
dc.date.available2010-09-06T06:20:49Z-
dc.date.issued2005en_HK
dc.identifier.citationNanotechnology, 2005, v. 16 n. 8, p. 1253-1264en_HK
dc.identifier.issn0957-4484en_HK
dc.identifier.urihttp://hdl.handle.net/10722/70218-
dc.description.abstractWe reported in a previous study (Zhao et al 2003 Phys. Rev. Lett. 91 175504) that energy transfer from the orderly intertube translational oscillation to intratube vibrational modes for an isolated system of two coaxial carbon nanotubes at low temperatures takes place primarily via two distinct types of collective motion of the carbon nanotubes, i.e., off-axial rocking motion of the inner tube and radial wavy motion of the outer tube, and that these types of motion may or may not occur for such a system, depending upon the amount of the initial extrusion of the inner tube out of the outer tube. Our present study, using micro-canonical molecular dynamics (MD), indicates the existence of an energy threshold, largely independent of system sizes and configurations, for a double-walled nano-oscillator to deviate from the intertube translational oscillation and thus to encounter significant intertube friction. The frictional forces associated with several distinct dissipative mechanisms are all found to exhibit no proportional dependence upon the normal force between the two surfaces in relative sliding, contrary to the conventional understanding resulting from tribological studies of macroscopic systems. Furthermore, simulation has been performed at different initial temperatures, revealing a strong temperature dependence of friction in the early phase of oscillation. Finally, our studies of three-walled nano-oscillators show that an initial extrusion of the middle tube can cause inner-tube off-axial instabilities, leading to strong frictional effects. © 2005 IOP Publishing Ltd.en_HK
dc.languageengen_HK
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/journals/nanoen_HK
dc.relation.ispartofNanotechnologyen_HK
dc.titleA tribological study of double-walled and triple-walled carbon nanotube oscillatorsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0957-4484&volume=16&spage=1253&epage=1264&date=2005&atitle=A+tribological+study+of+double-walled+and+triple-walled+carbon+nanotube+oscillatorsen_HK
dc.identifier.emailYam, CY:yamcy@graduate.hku.hken_HK
dc.identifier.emailChen, G:ghc@yangtze.hku.hken_HK
dc.identifier.authorityYam, CY=rp01399en_HK
dc.identifier.authorityChen, G=rp00671en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0957-4484/16/8/046en_HK
dc.identifier.scopuseid_2-s2.0-21144433443en_HK
dc.identifier.hkuros114197en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-21144433443&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume16en_HK
dc.identifier.issue8en_HK
dc.identifier.spage1253en_HK
dc.identifier.epage1264en_HK
dc.identifier.isiWOS:000231410600046-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridMa, CC=15751251400en_HK
dc.identifier.scopusauthoridZhao, Y=8579132600en_HK
dc.identifier.scopusauthoridYam, CY=7004032400en_HK
dc.identifier.scopusauthoridChen, G=35253368600en_HK
dc.identifier.scopusauthoridJiang, Q=7402523531en_HK
dc.identifier.citeulike226131-

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