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Scaling of the elastic contribution to the surface free energy of a nematic liquid crystal on a sawtoothed substrate

Opened Access Scaling of the elastic contribution to the surface free energy of a nematic liquid crystal on a sawtoothed substrate

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Autor: Romero Enrique, José Manuel
Pham, Chi Tuong
Patricio, Pedro
Departamento: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Fecha: 2010
Publicado en: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 82 (1), 011707-1/011707-7
Tipo de documento: Artículo
Resumen: 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 nonhalf- 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
Tamaño: 1.434Mb
Formato: PDF

URI: http://hdl.handle.net/11441/39108

DOI: http://dx.doi.org/10.1103/PhysRevE.82.011707

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