Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/671
Título: Scaling of the elastic contribution to the surface free energy of a nematic liquid crystal on a sawtoothed substrate
Autor: Romero-Enrique, José Manuel
Pham, Chi-Tuong
Patricio, Pedro
Palavras-chave: Phase-Transitions
Alignment
Orientation
Defects
Samples
Films
Layer
Data: 16-Jul-2010
Editora: Amer Physical SOC
Citação: Romer-Enrique J M, Pham C, Patrício P. Scaling of the elastic contribution to the surface free energy of a nematic liquid crystal on a sawtoothed substrate.Physical Review E. 2010; 82 (1): Art. No. 011707 Part 1.
Relatório da Série N.º: 1;011707
Resumo: We characterize the elastic contribution to the surface free energy of a nematic liquid crystal in the presence of a sawtooth substrate. Our findings are based on numerical minimization of the Landau-de Gennes model and analytical calculations on the Frank-Oseen theory. The nucleation of disclination lines (characterized by non-half-integer winding numbers) in the wedges and apexes of the substrate induces a leading order proportional to q ln q to the elastic contribution to the surface free-energy density, with q being the wave number associated with the substrate periodicity.
Peer review: yes
URI: http://hdl.handle.net/10400.21/671
ISSN: 1539-3755
Aparece nas colecções:ISEL - Física - Artigos



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