Isotropic-nematic phase diagram for interacting rigid rods on two-dimensional lattices.
Identifieur interne : 000936 ( Ncbi/Merge ); précédent : 000935; suivant : 000937Isotropic-nematic phase diagram for interacting rigid rods on two-dimensional lattices.
Auteurs : P. Longone [Argentine] ; M. Dávila ; A J Ramirez-PastorSource :
- Physical review. E, Statistical, nonlinear, and soft matter physics [ 1550-2376 ] ; 2012.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemistry : Liquid Crystals, Nanostructures.
- methods : Crystallization.
- ultrastructure : Nanostructures.
- Anisotropy, Computer Simulation, Models, Chemical, Models, Molecular, Phase Transition.
Abstract
The phase behavior of interacting rigid rods of length k (k-mers) on two-dimensional square and triangular lattices has been studied by theoretical calculations in the framework of the lattice-gas model. The process was analyzed by comparing the dependence on coverage of the free energy per site of an isotropic submonolayer of interacting k-mers f(iso)(θ) with that corresponding to a fully aligned (nematic) system f(nem)(θ). The existence of an intersection point between the curves f(iso)(θ) and f(nem)(θ), which is indicative of the occurrence of an isotropic-nematic phase transition in the adlayer, allowed us to obtain the complete (temperature, coverage, k-mer size) phase diagram of the system.
DOI: 10.1103/PhysRevE.85.011136
PubMed: 22400541
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Longone</name><affiliation wicri:level="1"><nlm:affiliation>Departamento de Física, Instituto de Física Aplicada, Universidad Nacional de San Luis-CONICET, Chacabuco 917, D5700BWS San Luis, Argentina.</nlm:affiliation><country xml:lang="fr">Argentine</country><wicri:regionArea>Departamento de Física, Instituto de Física Aplicada, Universidad Nacional de San Luis-CONICET, Chacabuco 917, D5700BWS San Luis</wicri:regionArea><wicri:noRegion>D5700BWS San Luis</wicri:noRegion></affiliation></author><author><name sortKey="Davila, M" sort="Davila, M" uniqKey="Davila M" first="M" last="Dávila">M. Dávila</name></author><author><name sortKey="Ramirez Pastor, A J" sort="Ramirez Pastor, A J" uniqKey="Ramirez Pastor A" first="A J" last="Ramirez-Pastor">A J Ramirez-Pastor</name></author></analytic><series><title level="j">Physical review. 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The process was analyzed by comparing the dependence on coverage of the free energy per site of an isotropic submonolayer of interacting k-mers f(iso)(θ) with that corresponding to a fully aligned (nematic) system f(nem)(θ). The existence of an intersection point between the curves f(iso)(θ) and f(nem)(θ), which is indicative of the occurrence of an isotropic-nematic phase transition in the adlayer, allowed us to obtain the complete (temperature, coverage, k-mer size) phase diagram of the system.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">22400541</PMID><DateCompleted><Year>2012</Year><Month>05</Month><Day>14</Day></DateCompleted><DateRevised><Year>2012</Year><Month>03</Month><Day>09</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1550-2376</ISSN><JournalIssue CitedMedium="Internet"><Volume>85</Volume><Issue>1 Pt 1</Issue><PubDate><Year>2012</Year><Month>Jan</Month></PubDate></JournalIssue><Title>Physical review. E, Statistical, nonlinear, and soft matter physics</Title><ISOAbbreviation>Phys Rev E Stat Nonlin Soft Matter Phys</ISOAbbreviation></Journal><ArticleTitle>Isotropic-nematic phase diagram for interacting rigid rods on two-dimensional lattices.</ArticleTitle><Pagination><MedlinePgn>011136</MedlinePgn></Pagination><Abstract><AbstractText>The phase behavior of interacting rigid rods of length k (k-mers) on two-dimensional square and triangular lattices has been studied by theoretical calculations in the framework of the lattice-gas model. The process was analyzed by comparing the dependence on coverage of the free energy per site of an isotropic submonolayer of interacting k-mers f(iso)(θ) with that corresponding to a fully aligned (nematic) system f(nem)(θ). The existence of an intersection point between the curves f(iso)(θ) and f(nem)(θ), which is indicative of the occurrence of an isotropic-nematic phase transition in the adlayer, allowed us to obtain the complete (temperature, coverage, k-mer size) phase diagram of the system.</AbstractText><CopyrightInformation>© 2012 American Physical Society</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Longone</LastName><ForeName>P</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>Departamento de Física, Instituto de Física Aplicada, Universidad Nacional de San Luis-CONICET, Chacabuco 917, D5700BWS San Luis, Argentina.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Dávila</LastName><ForeName>M</ForeName><Initials>M</Initials></Author><Author ValidYN="Y"><LastName>Ramirez-Pastor</LastName><ForeName>A J</ForeName><Initials>AJ</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2012</Year><Month>01</Month><Day>20</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Phys Rev E Stat Nonlin Soft Matter Phys</MedlineTA><NlmUniqueID>101136452</NlmUniqueID><ISSNLinking>1539-3755</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D016880" MajorTopicYN="N">Anisotropy</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003198" MajorTopicYN="N">Computer Simulation</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003460" MajorTopicYN="N">Crystallization</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="Y">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D050866" MajorTopicYN="N">Liquid Crystals</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008956" MajorTopicYN="Y">Models, Chemical</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008958" MajorTopicYN="Y">Models, Molecular</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D049329" MajorTopicYN="N">Nanostructures</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="Y">chemistry</QualifierName><QualifierName UI="Q000648" MajorTopicYN="Y">ultrastructure</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D044367" MajorTopicYN="Y">Phase Transition</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2011</Year><Month>10</Month><Day>03</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2011</Year><Month>12</Month><Day>23</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2012</Year><Month>3</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2012</Year><Month>3</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2012</Year><Month>5</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">22400541</ArticleId><ArticleId IdType="doi">10.1103/PhysRevE.85.011136</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Argentine</li></country></list><tree><noCountry><name sortKey="Davila, M" sort="Davila, M" uniqKey="Davila M" first="M" last="Dávila">M. Dávila</name><name sortKey="Ramirez Pastor, A J" sort="Ramirez Pastor, A J" uniqKey="Ramirez Pastor A" first="A J" last="Ramirez-Pastor">A J Ramirez-Pastor</name></noCountry><country name="Argentine"><noRegion><name sortKey="Longone, P" sort="Longone, P" uniqKey="Longone P" first="P" last="Longone">P. Longone</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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