File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Size-dependent surface stress, surface stiffness, and Young's modulus of hexagonal prism [111] b Nanowires

TitleSize-dependent surface stress, surface stiffness, and Young's modulus of hexagonal prism [111] b Nanowires
Authors
Issue Date2008
PublisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jsp
Citation
Journal of Applied Physics , 2008, v. 103, p. 104308 How to Cite?
AbstractThe present work studies the size-dependent surface stress, surface stiffness, and Young’s modulus of a prism crystalline nanowire, which is theoretically treated to be composed of a hypothetical nanowire phase, a true two-dimensional geometric surface phase, and a true one-dimensional geometric edge phase. The hypothetical nanowire phase could be elastically deformed due to relaxation of a free-standing nanowire, without any applied load, with respect to its bulk counterpart. The initially deformed nanowire phase is taken as reference in the present work in the determination of excess surface and edge energies. The theoretical results indicate that the edge phase causes the nominal specific surface energy, surface stress, and surface stiffness to be size dependent, and the surface phase and the edge phase make the nominal Young’s modulus size dependent. The edge and surface effects are more significant as the cross-sectional area of a nanowire becomes smaller. Molecular dynamics simulations on hexagonal prism 111 -SiC nanowires were conducted and the results verified the theoretical approach and illustrated the intrinsic mechanism of the size-dependent surface properties and Young’s modulus of nanowires. The theoretical analysis and methodology are universal when the continuum concepts of surface energy, surface stress, and Young’s modulus are used to characterize mechanical properties of nanowires. © 2008 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/69247
ISSN
2015 Impact Factor: 2.101
2015 SCImago Journal Rankings: 0.603
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, TYen_HK
dc.contributor.authorLuo, Men_HK
dc.contributor.authorChan, WKen_HK
dc.date.accessioned2010-09-06T06:11:55Z-
dc.date.available2010-09-06T06:11:55Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal of Applied Physics , 2008, v. 103, p. 104308en_HK
dc.identifier.issn0021-8979en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69247-
dc.description.abstractThe present work studies the size-dependent surface stress, surface stiffness, and Young’s modulus of a prism crystalline nanowire, which is theoretically treated to be composed of a hypothetical nanowire phase, a true two-dimensional geometric surface phase, and a true one-dimensional geometric edge phase. The hypothetical nanowire phase could be elastically deformed due to relaxation of a free-standing nanowire, without any applied load, with respect to its bulk counterpart. The initially deformed nanowire phase is taken as reference in the present work in the determination of excess surface and edge energies. The theoretical results indicate that the edge phase causes the nominal specific surface energy, surface stress, and surface stiffness to be size dependent, and the surface phase and the edge phase make the nominal Young’s modulus size dependent. The edge and surface effects are more significant as the cross-sectional area of a nanowire becomes smaller. Molecular dynamics simulations on hexagonal prism 111 -SiC nanowires were conducted and the results verified the theoretical approach and illustrated the intrinsic mechanism of the size-dependent surface properties and Young’s modulus of nanowires. The theoretical analysis and methodology are universal when the continuum concepts of surface energy, surface stress, and Young’s modulus are used to characterize mechanical properties of nanowires. © 2008 American Institute of Physics.-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://jap.aip.org/jap/staff.jspen_HK
dc.relation.ispartofJournal of Applied Physicsen_HK
dc.rightsJournal of Applied Physics . Copyright © American Institute of Physics.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleSize-dependent surface stress, surface stiffness, and Young's modulus of hexagonal prism [111] b Nanowiresen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0021-8979&volume=103&spage=104308&epage=1 to 9&date=2008&atitle=Size-dependent+surface+stress,+surface+stiffness,+and+Young%27s+modulus+of+hexagonal+prism+[111]+b+Nanowiresen_HK
dc.identifier.emailChan, WK: waichan@hku.hken_HK
dc.identifier.authorityChan, WK=rp00667en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1063/1.2927453-
dc.identifier.hkuros157042en_HK
dc.identifier.isiWOS:000256303800111-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats