宽温域蓝相液晶材料

蓝相常在高手性液晶体系的清亮点附近温度区间出现,由于具有优异的光学特性如无双折射现象和选择性反射可见光等,近年来蓝相在光电和光子领域越来越受到人们的关注。本文综述了蓝相的发现、分子排列和光学特性等,详细介绍了宽温域蓝相液晶材料在国内外的研究进展和应用现状。最后分析了蓝相液晶用于平板显示领域在技术方面存在的主要问题和未来发展方向。

Wide Temperature Range Blue Phase Liquid Crystalline Materials

Blue phases(BPs) are mesophases usually exhibited by highly chiral materials and commonly occur in a narrow temperature range below the isotropic phase.They are optically active and non-birefringent,while exhibit Bragg diffraction of light in the visible wavelength.Recently,BPs have attracted growing attention in the field of optoelectronics and photonics.This paper reviews the recent research advances in BPs liquid crystals,also with a brief introduction of the history of the blue phase studies,and some special properties,especially the frustration in the double twist molecular alignment.Finally,the current challenges for applications of BPs materials are highlighted,and the focus of future research and development are proposed.