U.S-Italy Cooperative Research in Condensed Matter Theory and Polymer Physics

美意凝聚态理论与高分子物理合作研究

• 批准号: 8816451
• 负责人: Rama Bansil
• 金额: $ 1.36万
• 依托单位: Trustees of Boston University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-01-15 至 1995-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8816451&HistoricalAwards=false
• 关键词: U.S; Italy; Cooperative; Research; Condensed

This award will support Prof. Rama Bansil and Prof. William Klein of the Center for Polymer Studies of Boston University in a research collaboration with Prof. A. Coniglio of the University of Naples. The objective of the collaboration is to seek a better understanding of how basic physical laws are altered on random materials and also of the physics of inhomogeneous media. In order to carry out this objective, the researchers propose to study 5 general topics: Topic I, the phenomena of multifractality in random materials, whereby an infinite hierarchy of exponents is sufficient to characterize virtually any system near its critical point. Topic II is concerned with applications of modern methods of statistical mechanics to physical processes on disordered media and to how a random material is fractured under sufficiently high stresses. In Topic III the researchers plan to address questions concerned with one specific class of random materials, linear and branched polymers. Topic IV is concerned with the relation between geometric clusters and thermal phase transitions, while Topic V will involve experiments using dynamic light scattering techniques to investigate the problem of probe diffusion in polymer gels. This work will continue a highly productive collaboration that has led to useful concepts and applications to problems like irreversible growth, resistor networks and many others.

该奖项将支持教授拉马班西尔和教授威廉克莱因 波士顿大学聚合物研究中心 与A教授合作研究。科尼利欧大学 那不勒斯 合作的目的是寻求一个更好的 理解基本物理定律是如何随机改变的 材料和非均匀介质的物理学。 为了实现这一目标，研究人员建议， 研究5个一般主题：主题I，多重分形现象 在随机材料中，指数的无限层次是 足以表征几乎任何接近其临界的系统 点 主题二是现代方法的应用 将统计力学应用于无序介质上的物理过程 以及随机材料在足够高的温度下如何断裂 压力 在主题III中，研究人员计划解决以下问题： 关注一类特定的随机材料，线性的和 支化聚合物 第四部分是关于 几何簇和热相变，而专题五 将涉及使用动态光散射技术的实验 研究探针在聚合物凝胶中的扩散问题。 这项工作将继续进行富有成效的合作， 引出了一些有用的概念和应用， 不可逆增长，电阻网络和许多其他。