Research Equipment Grant: Langmuir/Blodgett Deposition Apparatus

研究设备补助金：Langmuir/Blodgett 沉积装置

• 批准号: 8808997
• 负责人: Stephen Kowel
• 金额: $ 4.5万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-07-01 至 1989-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8808997&HistoricalAwards=false
• 关键词: Research; Equipment; Grant; Langmuir; Blodgett

An alternating layer Langmuir/Blodgett trough and support system equipment will be used to conduct research on the deposition and characterization of ultrathin polymeric films. The materials chosen for examination will be polymers with substituted dyes selected for their nonlinear optical properties. Second order nonlinear performance, such as second harmonic generation and the linear electro-optic effect, will be measured for the completed film assemblies. The assemblies must maintain noncentrosymmetric order throughout if they are to produce the extraordinary large effects predicted. Thus, the assemblies are built up in an alternating layer fashion using the active polymer interleaved with either inert organic layers or with other active species synthesized to present a net nonsymmetric order for each pair of layers. The development of novel nonlinear materials is a critical technological issue. Optical fiber communication systems require the development of switches, modulators, and dispersion compensation. Organic molecules, such as hemocyanin dyes, possess the largest second order nonlinear coefficients known. The Langmuir/Blodgett permits the development of multi-monolayer film architectures which may provide the performance in the film assembly expected from the molecular behavior. Thus, research devoted to studying interleaved organic and polymeric materials may provide key components for optical systems of the future.

将使用交替层朗缪尔/布洛吉特沟槽和支撑系统设备来研究超薄聚合物薄膜的沉积和表征。选择的材料将是带有取代染料的聚合物，因为它们的非线性光学性质而被选择。将测量完成的薄膜组件的二阶非线性性能，如二次谐波产生和线性电光效应。这些组件必须始终保持非中心对称的顺序，才能产生预期的超大影响。因此，使用与惰性有机层或与合成的其他活性物种交织的活性聚合物以交替的层方式构建组件，以呈现每对层的净非对称顺序。新型非线性材料的开发是一个关键的技术问题。光纤通信系统需要开发开关、调制器和色散补偿。有机分子，如血蓝蛋白染料，具有已知的最大二阶非线性系数。朗缪尔/布洛杰特允许开发多单层膜结构，这可能在膜组件中提供预期的分子行为性能。因此，致力于研究交错有机和聚合物材料的研究可能为未来的光学系统提供关键部件。