Measurements of optical anisotropy of a calamitic lyotropic liquid crystal by T. Beica, R. Moldovan, M. Tintaru, I. Enache, and S. Frunza

Crystal Research and Technology

Cryst. Res. Technol. 39, 151 (2004) - Abstract -

Measurements of optical anisotropy of a calamitic lyotropic liquid crystal

T. Beica, R. Moldovan, M. Tintaru, I. Enache, and S. Frunza

National Institute of Material Physics, CP Mg -07, R-77125 Bucharest-Magurele, Romania

Keywords	lyotropic liquid crystals, optical birefringence
PACS	61.30.St, 78.20.Ci
DOI	10.1002/crat.200310163

Optical birefringence measurements for a calamitic lyotropic liquid crystal containing sodium lauryl sulphate/decanol/water are presented. A value of the order of 10^-3 was obtained, much smaller than that of thermotropic liquid crystals. The order parameter temperature dependence is evaluated using an extrapolating method and taking into accounts the influence of the micelle shape.

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