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Topological defect transformation and structural transition of two-dimensional colloidal crystals across the nematic to smectic-A phase transition.
Zuhail, K P; Sathyanarayana, P; Sec, D; Copar, S; Skarabot, M; Musevic, I; Dhara, S.
Afiliación
  • Zuhail KP; School of Physics, University of Hyderabad, Hyderabad-500046, India.
  • Sathyanarayana P; School of Physics, University of Hyderabad, Hyderabad-500046, India.
  • Sec D; J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
  • Copar S; Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia.
  • Skarabot M; J. Stefan Institute, Jamova 39, SI-1000 Ljubljana, Slovenia.
  • Musevic I; Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia.
  • Dhara S; Faculty of Mathematics and Physics, University of Ljubljana, Jadranska 19, SI-1000 Ljubljana, Slovenia.
Phys Rev E Stat Nonlin Soft Matter Phys ; 91(3): 030501, 2015 Mar.
Article en En | MEDLINE | ID: mdl-25871035
We observe that topological defects in nematic colloids are strongly influenced by the elasticity and onset of smectic layering across the nematic (N) to smectic-A (SmA) phase transition. When approaching the SmA phase from above, the nematic hyperbolic hedgehog defect that accompanies a spherical colloidal inclusion is transformed into a focal conic line in the SmA phase. This phase transformation has a strong influence on the pairwise colloidal interaction and is responsible for a structural transition of two-dimensional colloidal crystals. The pretransitional behavior of the point defect is supported by Landau-de Gennes Q-tensor modeling accounting for the increasing elastic anisotropy.
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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev E Stat Nonlin Soft Matter Phys Asunto de la revista: BIOFISICA / FISIOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos
Buscar en Google
Añadir a Mi BVS
Imprimir
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PubMed Links

Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev E Stat Nonlin Soft Matter Phys Asunto de la revista: BIOFISICA / FISIOLOGIA Año: 2015 Tipo del documento: Article País de afiliación: India Pais de publicación: Estados Unidos