Elston Steve J
Department of Engineering Science, University of Oxford, Oxford, United Kingdom.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jul;78(1 Pt 1):011701. doi: 10.1103/PhysRevE.78.011701. Epub 2008 Jul 1.
Flexoelectric effects are studied in the domain walls of a nematic liquid crystal device showing the Freedericksz transition. Walls parallel to the alignment direction have a strong twist distortion and an electro-optic effect dominated by e1-e3 is seen. Walls perpendicular to the alignment direction have a strong splay-bend distortion and an electro-optic effect dominated by e1+e3 is seen. This allows the study of both flexoelectric coefficient combinations in a single device.
在呈现弗雷德里克斯转变的向列型液晶器件的畴壁中研究了挠曲电效应。平行于取向方向的畴壁具有强烈的扭曲畸变,并且可以看到由e1 - e3主导的电光效应。垂直于取向方向的畴壁具有强烈的展曲 - 弯曲畸变,并且可以看到由e1 + e3主导的电光效应。这使得能够在单个器件中研究两种挠曲电系数组合。