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Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jul;68(1 Pt 1):011707. Epub 2003 Jul 24.

Interpretation of unusual textures in the B2 phase of a liquid crystal composed of bent-core molecules.

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  • 1Departamento de Física Aplicada II, Facultad de Ciencias, Universidad del País Vasco, Apartado 644, 48080 Bilbao, Spain.


A liquid crystal material of bent-core molecules is investigated by means of optical texture observations, x-ray measurements, and miscibility studies. While the x-ray and miscibility data point towards a B2 phase, the texture is however unusual, showing optical isotropy and segregation in two domains with opposite gyrations. It is shown that the texture can be interpreted successfully in terms of a smectic-C(A)P(A) structure in small domains with random orientations. The optical activity data are also explained semiquantitatively.

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