Linked Life Data

14754003

Source:http://linkedlifedata.com/resource/pubmed/id/14754003

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2004-2-2
pubmed:abstractText
We perform molecular dynamics simulations to study shape changes of carbon fullerenes and nanotubes with increasing temperature. At moderate temperatures, these systems gain structural and vibrational entropy by exploring the configurational space at little energy cost. We find that the soft phonon modes, which couple most strongly to the shape, maintain the surface area of these hollow nanostructures. In nanotubes, the gain in entropy translates into a longitudinal contraction, which reaches a maximum at T approximately 800 K. Only at much higher temperatures do the anharmonicities in the vibration modes cause an overall expansion.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jan
pubmed:issn
0031-9007
pubmed:author
pubmed:issnType
Print
pubmed:day
9
pubmed:volume
92
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
015901
pubmed:dateRevised
2005-10-5
pubmed:year
2004
pubmed:articleTitle
Thermal contraction of carbon fullerenes and nanotubes.
pubmed:affiliation
Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824-2320, USA.
pubmed:publicationType
Journal Article