Chirality and Confinement in Liquid Crystals

液晶中的手性和限制

• 批准号: 9982020
• 负责人: Charles Rosenblatt
• 金额: $ 24.92万
• 依托单位: Case Western Reserve University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-01-15 至 2003-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9982020&HistoricalAwards=false
• 关键词: Chirality; Confinement; Liquid; Crystals

This project is aimed at significantly increasing our understanding of ho redued symmetry and confinement affect liquid crystalline behavior. A wide battery of experimental tools will be utilized for these studies including static and dynamic light scattering, dielectric relaxation, magnetic and electric birefringence and other electroceptic measurements, magnetic susceptometry, atomic force and scanning tunneling microscopy, and differential scanning calorimetry. A variety of phenomena related to novel molecules, and in particular to the synclinic and anticlinic phases will be included in the study. Another area will include a study of liquid crystals in confined (porous) geometry's to examine novel electrooptic phenomena for confined chiral molecules, the effects of confinement on elasticity, and the roles of correlation length and pore size on the nematic-isotropic phase transition.%%%The impact of this integrated research and education project will be significant. The behavior of complex liquid crystalline phses in confined geometry's is of particular interest as the information technologies utilizing these materials e.g., for novel display devices, continue to emphasize improved resolution and enhanced stability. Student training in this important area will enhance employment opportunities in the job market thereby facilitating technology transfer and enhancing the country's technological infrastructure.***

这个项目的目的是显著增加我们对对称性降低和限制影响液晶行为的理解。 一个广泛的电池的实验工具将用于这些研究，包括静态和动态光散射，介电弛豫，磁和电双折射和其他电测量，磁共振，原子力和扫描隧道显微镜，差示扫描量热法。 与新分子有关的各种现象，特别是与向斜和背斜相有关的现象将包括在研究中。 另一个领域将包括受限（多孔）几何结构的液晶研究，以研究受限手性分子的新颖电光现象，限制对弹性的影响，以及相关长度和孔径对向列型-各向同性相变的作用。这一综合研究和教育项目的影响将是巨大的。 复杂液晶相在受限几何结构中的行为特别令人感兴趣，因为利用这些材料的信息技术，对于新颖的显示设备，继续强调改进的分辨率和增强的稳定性。 这一重要领域的学生培训将增加就业市场的就业机会，从而促进技术转让和加强国家的技术基础设施。