Electric field induced inversion of the sign of half-integer disclinations in nematic liquid crystals

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Avelino, PP (Autor) FCUP; Moraes, F (Autor) Outra; J.C.R.E. Oliveira (Autor) FEUP; de Oliveira, BF (Autor) Outra

Revista

Título: Soft Matter

Vol. 7 Nº 1

Páginas: 10961-10966

ISSN: 1744-683X

Editora: Royal Society of Chemistry

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 6 Citações

Classificação Científica

FOS: Ciências exactas e naturais

Outras Informações

ID Authenticus: P-002-ZJS

DOI: 10.1039/c1sm05990d

Abstract (EN): We study the effect of the rotation of an external electric field on the dynamics of half-integer disclination networks in two dimensional nematic liquid crystals with a negative dielectric anisotropy using LICRA, a LIquid CRystal Algorithm developed by the authors. We show that a rotation of p of the electric field around an axis of the liquid crystal plane continuously transforms all half-integer disclinations of the network into disclinations of opposite sign via twist disclinations. We also determine the evolution of the characteristic length scale, thus quantifying the impact of the external electric field on the coarsening of the defect network.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6