Dynamics of point defects and stripe textures in Smectic-C Langmuir monolayers
Institut de Nanociència i Nanotecnologia, and Departament de Química Física, Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain
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Revised: 28 October 2009
Accepted: 6 November 2009
Published online: 9 December 2009
Langmuir monolayers of an azobenzene fatty acid derivative have been studied experimentally in a regime where confined domains with Smectic-C order form spontaneously. Coalescence of domains results in a dynamics of formation and annihilation of point defects and string-like distortions of the molecular field amenable to semi-quantitative analysis. Absence of backflow and layer thickness effects enables us to extract values for material parameters from the analysis of defect dynamics.
© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2009