RUI: Dynamics of Interfacial Patterns

RUI：界面模式的动力学

• 批准号: 9319973
• 负责人: Jerry Gollub
• 金额: $ 27万
• 依托单位: Haverford College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-02-15 至 1997-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9319973&HistoricalAwards=false
• 关键词: RUI; Dynamics; Interfacial; Patterns

9319973 Gollub Technical Abstract: This program of experimental research is aimed at extending their understanding of nonlinear phenomena involving macroscopic interfacial patterns. First, statistical methods will be used to gain a deeper understanding of disordered patterns that are evolving chaotically in time. Physical systems to be investigated include interfacial waves and liquid crystal layers. Second, the dynamics and defects of quasicrystalline patterns patterns will be studied in a fluid system where the various excitations, e.g. phasons, can be studied directly by optical imaging. Finally, the dynamics of crack patterns and networks in polymeric films will be investigated as time allows. This RUI project involves the pairing of graduate and undergraduate researchers, which has been shown to be a remarkably effective training strategy. NON-TECHNICAL ABSTRACT: This program of experimental research is aimed at understanding the ordered and disordered patterns that arise via instability as a fluid or solid is driven away from equilibrium. Systems to be studied include waves on fluid interfaces, flows in liquid crystals, and cracking patterns in polymeric materials. Complex and chaotic dynamics generally prevent exact prediction of the pattern development, but a statistical approach can lead to limited but useful predictability. The methodology involves significant technological innovation, mainly centered on digital analysis of complex patterns. This RUI project involves the pairing of graduate and undergraduate researchers, which has been shown to be a remarkably effective training strategy. ***

9319973 Gollub技术摘要：这个实验研究项目旨在扩大他们对涉及宏观界面图案的非线性现象的理解。首先，将使用统计方法来更深入地了解在时间上杂乱无章地演变的无序模式。要研究的物理系统包括界面波和液晶层。其次，将在流体系统中研究准晶图案的动力学和缺陷，在该系统中，可以直接用光学成像来研究各种激发，例如相子。最后，在时间允许的情况下，将研究聚合物薄膜中的裂纹模式和网络的动力学。这个RuI项目涉及研究生和本科生研究人员的配对，这已被证明是一种非常有效的培训策略。非技术摘要：这个实验研究项目的目的是了解当流体或固体被驱离平衡时，由于不稳定而产生的有序和无序模式。要研究的系统包括流体界面上的波、液晶中的流动和聚合物材料中的破裂模式。复杂和混乱的动力学通常阻碍了对模式发展的准确预测，但统计方法可能导致有限但有用的可预测性。该方法涉及重大技术创新，主要以复杂图案的数字分析为中心。这个RuI项目涉及研究生和本科生研究人员的配对，这已被证明是一种非常有效的培训策略。***