NSF-CGP Science Fellowship Program: Surface Anchoring and Alignment in Polymer Dispersed Liquid Crystals

NSF-CGP 科学奖学金计划：聚合物分散液晶的表面锚定和排列

• 批准号: 9311612
• 负责人: John West
• 金额: $ 2.01万
• 依托单位: Kent State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-01-01 至 1995-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9311612&HistoricalAwards=false
• 关键词: NSF; CGP; Science; Fellowship; Program

WPC 2 B J Z Courier #| x 6F x 6 X @ `7 X @ HP LaserJet 4 (935-Mail) INTHP4-1.PRS x @ \ E X @ 2 6 F V N Z #| x Courier ? x x x , x 6 X @ `7 X @ HP LaserJet 4 (935-Mail) INTHP4-1.PRS x @ \ E X @ 2 0 F Z : 9311612 West This award will support a cooperative research project between Professor John L. West, Liquid Crystal Institute, Kent State University, Ohio, and Dr. Shunsuke Kobayashi, Faculty of Technology, Tokyo University of Agriculture and Technology in Tokyo. During a four month visit, Professor West will conduct research on surface anchoring and alignment in polymer dispersed liquid crystals (PDLC). Measurements will be taken of the azimuthal anchoring energy as a function of temperature of the eutectic liquid crystal mixture E7 at a polyvinylformal surface. The results will be correlated with previous experimental results which show that the electro optic response of a PDLC changes abruptly at the glass transition temperature of the polymer binder. The experimental technique will then be expanded to other polymer and liquid crystal combinations. Establishment of a positive correlation between the polymer glass transition and azimuthal anchoring energy will lead to a wide variety of additional research, such as determining if anchoring energy is the cause of observed electro optic variations in PDLC materials composed of different polymer binders. Understanding of the mechanism and role of surface anchoring in the electro optics of PDLC materials will allow materials to be optimized for a variety of applications such as high definition projection and flat panel displays. Professor Kobayashi is at the forefront of liquid cr ystal research, with expertise in the alignment and anchoring of liquid crystals at a solid interface. This specialization coupled with Professor West's significant research in PDLC and related composites should provide an excellent collaboration that will continue after the completion of this phase of the research. This project is supported by the NSF CGP (Center for Global Partnership) Science Fellowship Program.

WPC 2 B J Z 快递#| x 6F x 6 X @ `7 X @ HP LaserJet 4 (935-Mail) INTHP4-1.PRS x @ \ E X @ 2 6 F V N Z #| x 快递？ x x x , x 6 X @ `7 X @ HP LaserJet 4 (935-Mail) INTHP4-1.PRS x @ \ E X @ 2 0 F Z : 9311612 West 该奖项将支持俄亥俄州肯特州立大学液晶研究所 John L. West 教授和东京农业科技大学技术学院 Shunsuke Kobayashi 博士之​​间的合作研究项目 东京。 在为期四个月的访问期间，韦斯特教授将进行聚合物分散液晶（PDLC）的表面锚定和排列研究。 将测量作为聚乙烯醇缩甲醛表面处的共晶液晶混合物E7的温度的函数的方位锚定能。 该结果将与之前的实验结果相关联，该结果表明 PDLC 的电光响应在聚合物粘合剂的玻璃化转变温度下突然变化。 该实验技术随后将扩展到其他聚合物和液晶组合。 聚合物玻璃化转变和方位角锚定能之间正相关性的建立将导致各种各样的额外研究，例如确定锚定能是否是由不同聚合物粘合剂组成的 PDLC 材料中观察到的电光变化的原因。 了解表面锚定在 PDLC 材料电光学中的机制和作用将使材料能够针对各种应用（例如高清投影和平板显示器）进行优化。 小林教授处于液晶研究的前沿，在固体界面液晶的排列和锚定方面拥有专业知识。 这种专业化加上 West 教授在 PDLC 和相关复合材料方面的重要研究，应该会提供良好的合作，这种合作将在本阶段研究完成后继续下去。 该项目得到了 NSF CGP（全球合作中心）科学奖学金计划的支持。