Nematic liquid crystal dynamics under applied electric fields

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

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

Revista

Título: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics

Vol. 82 Nº 4, Part 1

ISSN: 1539-3755

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 20 Citações

ISI Web of Science

Scopus - 25 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-003-1V9

DOI: 10.1103/physreve.82.041707

Abstract (EN): In this paper we investigate the coarsening dynamics of liquid crystal textures in a two-dimensional nematic under applied electric fields, using numerical simulations performed using a publicly available liquid crystal algorithm developed by the authors. We consider both positive and negative dielectric anisotropies and two different possibilities for the orientation of the electric field (parallel and perpendicular to the two-dimensional lattice). We determine the effect of an applied electric field pulse on the evolution of the characteristic length scale and other properties of the liquid crystal texture network. In particular, we show that different types of defects are produced after the electric field is switched on, depending on the orientation of the electric field and the sign of the dielectric anisotropy.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7