Theoretical analysis of the influence of flexoelectric effect on the defect site in nematic inversion walls

	Theoretical analysis of the influence of flexoelectric effect on the defect site in nematic inversion walls
	Zheng, G. L.; H. Zhang; W. J. Ye; Z. D. Zhang; H. W. Song and L. Xuan
	2016
发表期刊	Chinese Physics B
卷号	25 期号:3
摘要	Based on the experimental phenomena of flexoelectric response at defect sites in nematic inversion walls conducted by Kumar et al., we gave the theoretical analysis using the Frank elastic theory. When a direct-current electric field normal to the plane of the substrate is applied to the parallel aligned nematic liquid crystal cell with weak anchoring, the rotation of +/- 1 defects in the narrow inversion walls can be exhibited. The free energy of liquid crystal molecules around the +1 and -1 defect sites in the nematic inversion walls under the electric field was formulated and the electric-field-driven structural changes at the defect site characterized by polar and azimuthal angles of the local director were simulated. The results reveal that the deviation of azimuthal angle induced by flexoelectric effect are consistent with the switching of extinction brushes at the +1 and -1 defects obtained in the experiment conducted by Kumar et al.
文章类型	期刊
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57481
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zheng, G. L.,H. Zhang,W. J. Ye,et al. Theoretical analysis of the influence of flexoelectric effect on the defect site in nematic inversion walls[J]. Chinese Physics B,2016,25(3).
APA	Zheng, G. L.,H. Zhang,W. J. Ye,Z. D. Zhang,&H. W. Song and L. Xuan.(2016).Theoretical analysis of the influence of flexoelectric effect on the defect site in nematic inversion walls.Chinese Physics B,25(3).
MLA	Zheng, G. L.,et al."Theoretical analysis of the influence of flexoelectric effect on the defect site in nematic inversion walls".Chinese Physics B 25.3(2016).

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