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5 January 2004 Twisted nematic device fabrication using photoalignment monolayers
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A method of fabrication of twisted nematic device is described utilizing the monomolecular chemisorbed layer on at least one internal transparent electrode of capillary cell. The layer is capable of aligning and re-aligning the liquid crystal molecules upon UV irradiation. The preliminary uniform LC orientation with high contrast of the order of 1000 occurs after filling the LC material into the cell, which is irradiated before filling with small UV dosage of polarized light of the order of 1 mJ/cm2. The obtained orientation can be further re-aligned and desirable local twist configurations can be obtained using the second irradiation with UV light having polarization different from that of the first irradiation.
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Leonid A. Beresnev, Mu-San Chen, Charles Dulcey, and Ranganathan Shashidhar "Twisted nematic device fabrication using photoalignment monolayers", Proc. SPIE 5213, Liquid Crystals VII, (5 January 2004);

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