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Issue 47, 2013
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Spiral layer undulation defects in B7 liquid crystals

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In bent-core smectic liquid crystal phases, a strong local preference for layering coupled to the bent molecular shape gives rise to two spontaneous symmetry-breaking instabilities, polar orientational ordering of the molecules and molecular tilt, which combine to produce chiral phases. The B7 is one such phase characterized by layer undulations associated with the formation of periodic, polarization-modulation stripes that can be visualized using FFTEM. By analyzing topological defects in the B7 layer undulation texture, we can determine the molecular organization within the layers which indicates that the layers are homochiral. The layer undulations coupled with the layer chirality forms clockwise or anticlockwise spiral patterns as they nucleate and grow.

Graphical abstract: Spiral layer undulation defects in B7 liquid crystals

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Publication details

The article was received on 11 Jul 2013, accepted on 17 Oct 2013 and first published on 28 Oct 2013

Article type: Paper
DOI: 10.1039/C3SM51905H
Soft Matter, 2013,9, 11303-11308

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    Spiral layer undulation defects in B7 liquid crystals

    D. Chen, D. K. Yoon, J. E. Maclennan, M. A. Glaser, E. Korblova, D. M. Walba, N. Gimeno, M. B. Ros, R. Deb, N. V. S. Rao and N. A. Clark, Soft Matter, 2013, 9, 11303
    DOI: 10.1039/C3SM51905H

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