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dc.contributor.author
Soulé, Ezequiel Rodolfo
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Lavigne, Cyrille
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Reven, Linda
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Rey, Alejandro D.
dc.date.available
2018-08-06T19:42:35Z
dc.date.issued
2012-07
dc.identifier.citation
Soulé, Ezequiel Rodolfo; Lavigne, Cyrille; Reven, Linda; Rey, Alejandro D.; Multiple interfaces in diffusional phase transitions in binary mesogen-nonmesogen mixtures undergoing metastable phase separations; American Physical Society; Physical Review E: Statistical, Nonlinear and Soft Matter Physics; 86; 1; 7-2012; 1-9; 011605
dc.identifier.issn
1539-3755
dc.identifier.uri
http://hdl.handle.net/11336/54320
dc.description.abstract
Theory and simulations of simultaneous chemical demixing and phase ordering are performed for a mixed order parameter system with an isotropic-isotropic (I-I) phase separation that is metastable with respect to an isotropic-nematic (I-N) phase-ordering transition. Under certain conditions, the disordered phase transforms into an ordered phase via the motion of a double front containing a metastable phase produced by I-I demixing, a thermodynamically driven mechanism not previously reported. Different kinetic regimes are found depending on the location of the initial conditions in the thermodynamic phase diagram and the ratio between diffusional and nematic phase-ordering mobilities. For a diffusional process, depending if the temperature is above or below the critical codissolution point, an inflection point or a phase separation takes place in the depletion layer. This phase separation leads to the formation of a second interface where the separation of the two metastable isotropic phases grows monotonically with time. The observed deviations from the typical Fickian concentration profiles are associated with strong positive deviations of the mixture from ideality due to couplings between concentration and nematic ordering. Although systems of interest include liquid-crystalline nanocomposites, this mechanism may apply to any mixture that can undergo an order-disorder transition and demix.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
dc.rights
info:eu-repo/semantics/openAccess
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Phase Ordering
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Phase Separation
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Mixed Order Parameters
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Metastable Phases
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Otras Ciencias Físicas
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Multiple interfaces in diffusional phase transitions in binary mesogen-nonmesogen mixtures undergoing metastable phase separations
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-07-11T17:25:30Z
dc.journal.volume
86
dc.journal.number
1
dc.journal.pagination
1-9; 011605
dc.journal.pais
Estados Unidos
dc.description.fil
Fil: Soulé, Ezequiel Rodolfo. McGill University; Canadá. 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: Lavigne, Cyrille. McGill University; Canadá
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Fil: Reven, Linda. McGill University; Canadá
dc.description.fil
Fil: Rey, Alejandro D.. McGill University; Canadá
dc.journal.title
Physical Review E: Statistical, Nonlinear and Soft Matter Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pre/abstract/10.1103/PhysRevE.86.011605
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevE.86.011605
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