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Lyotropic mineral liquid crystals—materials that are generally electron rich, thermally stable, and often inexpensive—are reviewed. Molecular wires, ribbons, and disks as well as anisotropic crystallites are examined and guidelines useful in the search for new mineral liquid-crystalline suspensions are given. The Figure shows a centimeter-size single domain of nematic clay gel observed between crossed polarizers.
Gabriel et al. (Sat,) studied this question.