INVESTIGADORES
SOULE Ezequiel Rodolfo
congresos y reuniones científicas
Título:
Phase transformations in soft matter mixtures under coupled phase ordering and phase separation: effect of metastable phases
Autor/es:
EZEQUIEL R. SOULÉ; CYRILLE LAVIGNE; LINDA REVEN; ALEJANDRO D. REY
Lugar:
Boston
Reunión:
Conferencia; MRS 2011 fall meeting; 2011
Institución organizadora:
Materials Research Society
Resumen:
In this work we simulate one-dimensional dynamics of the phase
separation phase ordering process in binary soft materials, with
coupled conserved and non-conserved order parameters. The conserved
order parameter is the concentration of the mixture, while the
non-conserved order parameter (NCOP) represents an ordered phase.
Systems with one and two NCOPs (in addition to concentration) are
analyzed, depending if one or both components are capable of forming
ordered phases. A mixture of a polymer and a nematic liquid crystal is
used as one NCOP system, and a mixture of nanoparticles capable of
forming colloidal crystals, and a nematic liquid crystal is the two
NCOP system. The interaction parameters are selected such that the
isotropic-isotropic (I-I) phase equilibrium is buried bellow the
nematic-isotropic equilibrium, so I-I phase separation is metastable.