Mostrar el registro sencillo del ítem

dc.contributor.author
Soulé, Ezequiel Rodolfo  
dc.contributor.author
Abukhdeir, Nasser Mohieddin  
dc.contributor.author
Pereyra, Alejandro Daniel  
dc.date.available
2018-12-10T20:01:22Z  
dc.date.issued
2009-12  
dc.identifier.citation
Soulé, Ezequiel Rodolfo; Abukhdeir, Nasser Mohieddin; Pereyra, Alejandro Daniel; Theory and computation of directional nematic phase ordering; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 79; 2; 12-2009; 21702-21702  
dc.identifier.issn
1539-3755  
dc.identifier.uri
http://hdl.handle.net/11336/66217  
dc.description.abstract
A computational study of morphological instabilities of a two-dimensional nematic front under directional growth was performed using a Landau–de Gennes-type quadrupolar tensor order parameter model for the first-order isotropic-nematic transition of 5CB (pentyl-cyanobiphenyl). A previously derived energy balance, taking anisotropy into account, was utilized to account for latent heat and an imposed morphological gradient in the time-dependent model. Simulations were performed using an initially homeotropic isotropic-nematic interface. Thermal instabilities in both the linear and nonlinear regimes were observed and compared to past experimental and theoretical observations. A sharp-interface model for the study of linear morphological instabilities, taking into account additional complexity resulting from liquid-crystalline order, was derived. Results from the sharp-interface model were compared to those from full two-dimensional simulation identifying the specific limitations of simplified sharp-interface models for this liquid-crystal system. In the nonlinear regime, secondary instabilities were observed to result in the formation of defects, interfacial heterogeneities, and bulk texture dynamics.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Physical Society  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Phase Transitions  
dc.subject
Directional Growth  
dc.subject
Morphological Instability  
dc.subject.classification
Otras Ciencias Físicas  
dc.subject.classification
Ciencias Físicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Theory and computation of directional nematic phase ordering  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2018-12-05T14:36:39Z  
dc.journal.volume
79  
dc.journal.number
2  
dc.journal.pagination
21702-21702  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Melville  
dc.description.fil
Fil: Soulé, Ezequiel Rodolfo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina  
dc.description.fil
Fil: Abukhdeir, Nasser Mohieddin. McGill University; Canadá  
dc.description.fil
Fil: Pereyra, Alejandro Daniel. McGill University; Canadá  
dc.journal.title
Physical Review E: Statistical, Nonlinear and Soft Matter Physics  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1103/PhysRevE.79.021702  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.79.021702