Dynamic Light Scattering Study of Commensurate and Incommensurate Structure in Ferrielectric and Twist Grain Boundary Liquid Crystals

9904321sprunt这个项目是对液晶相的研究，它以一种几乎循序渐进的方式追踪固体的取向和位置顺序特征的液相发展。随着液晶中铁电性和扭转晶界相的发现，这一主题中出现了引人注目的新元素。动态光散射技术将用于解决手性液晶中这些重要的问题，这些液晶显示出最近发现的各种铁、反铁和铁电相，以及具有扭曲晶界结构的材料。今后的研究方向是研究新发现的非手性铁电液晶的序参量动力学。铁电和反铁电液晶的综合研究和教育项目具有很高的技术意义，对这些材料的基础研究被广泛认为是为下一代电光器件提供重要基础。接受过这类基础科学项目培训的学生可能会在这些领域和相关领域面临更多的就业机会，这些领域被视为高风险，但经济影响的潜力很大。

9904321SpruntThis project is a study of liquid crystalline phases which trace in a virtually step-wise fashion the development out of the liquid phase of the orientational and positional order characteristic of solids. Striking new elements within this theme emerged with the discoveries of ferroelectricity and twist grain boundary phases in liquid crystals. The technique of dynamic light scattering will be used to address these important topics in chiral liquid crystals exhibiting a variety of recently discovered ferro-, antiferro-, and ferrielectric phases, as well as in materials possessing twisted grain boundary structure. As a future direction, the order parameter dynamics of recently discovered achiral ferroelectric liquid crystals will be investigated.Well integrated research and education projects on ferro- and antiferroelectric liquid crystals have high technological significance in that fundamental studies on these materials are widely acknowledged to be providing an important basis for the next-generation electro-optical devices. Students trained on these types of fundamental science projects will likely face enhanced job opportunities in these and related areas viewed as high-risk but high-potential for economic impact.