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From Lcd To Living Liquid Crystals, Shuang Zhou

Science and Engineering Saturday Seminars

Liquid crystals are a family of materials that can flow like a liquid, while having orientation order, like a crystal. Traditional liquid crystals are formed by small rod- or disk-shaped organic molecules that spontaneously align with each other. The orientation direction of the liquid crystals molecules, or the director, is sensitive to external fields. For example, a few volt of electric field can cause the director rotate 90 degrees and completely change the optical property of the sample. The susceptibility to external fields made liquid crystals an ideal material for optical switching applications, the best example of which is the …