Characterization of Perfluorinated Liquid-Crystal Compounds and Two Dimensional Behavior of Liquid-Crystal Free-StandingFilms

“全氟液晶化合物的表征和液晶独立膜的二维行为”项目将重点研究液晶独立膜中独特的分子排列，使其成为研究液晶化合物全氟化效应的理想物理体系。独立的液晶薄膜，只有两个分子层那么薄，是研究二维物理现象的最佳系统之一，而不需要衬底的复杂影响。此外，设计一种新的量热系统，将热容测量的分辨率提高五倍以上，同时允许同时进行热容和椭偏测量，这将为理论预测的热性能提供几个关键测试。全氟化液晶独特的物理性质使其成为制造用于快速电光开关应用的表面稳定铁电液晶电池的最佳主体化合物之一。确定新型液晶系统的性能在推进红外和微波液晶调制器的新材料以及快速开关液晶显示等许多应用领域中发挥着越来越重要的作用。* * *

9703898 Huang This project on the Characterization of Perfluorinated Liquid- Crystal Compounds and Two Dimensional Behavior of Liquid-Crystal Free-standing Films will focus on the unique molecular arrangement in liquid-crystal free-standing films that makes such films an ideal physical system in which to investigate the effects attributed to the perfluorination of liquid crystal compounds. The free standing liquid crystal films, as thin as two molecular layers, is one of the best systems to investigate two-dimensional physical phenomena without the complicating effects of a substrate. Furthermore, designing a new calorimetric system that will improve by more than five-fold the resolution of the heat capacity measurements while allowing for simultaneous heat capacity and ellipsometry measurements will provide several critical tests of theoretically predicted thermal properties. %%% The unique physical properties of perfluoronated liquid crystals make them one of the best class of host compounds for manufacturing surface stabilized ferroelectric liquid-crystal cells for fast electro-optical switching applications. Determining the properties of new liquid crystal systems are playing an increasingly important role in advancing a number of applications areas that include new materials for infrared and microwave liquid crystal modulators, and fast-switching liquid crystal displays. ***