Geodesic
Experimental investigation of quenching of defects by external electrical field and its influences on photonic band gap in cholesteric liquid crystals
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2012), pp. 55-61

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The possibility of forced quenching of defects in cholesteric liquid crystals with negative dielectric anisotropy has been experimentally examined. It was experimentally shown for the first time that under homeotropic boundary condi tions the sharpness of edges of photonic band gap in cholesteric liquid crystals with negative dielectric anisotropy increases in the course of quenching of defects.
Keywords: cholesteric liquid crystal, disclination, defect. 
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K. R. Allahverdyan. Experimental investigation of quenching of defects by external electrical field and its influences on photonic band gap in cholesteric liquid crystals. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (2012), pp. 55-61. http://geodesic.mathdoc.fr/item/UZERU_2012_2_a8/