| http://www.w3.org/ns/prov#value | - Initial devices used such effects as the nematic dynamic scattering effect, and increasingly sophisticated devices employing such properties as surface induced alignment, the effect on polarised light, and the co-orientation of elongate dye molecules or other elongate molecules/particles, came into being. [0008] Some such devices used cells in which the nematic phase adopted a twisted structure, e
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