U.S. Sweden Cooperative Research: Long and Short Time Relaxation Processes and the Ion-Matrix Coupling Problem in Salt + Polymeric Solvent Systems

目标和与计划目标的相关性：本推荐奖 将支持Charles A.教授之间的合作研究 Angell，普渡大学，L.M.教授。查尔默斯？托雷尔 瑞典哥德堡技术大学。 他们将继续 工作的时间依赖过程的说明，在潜在的 重要固态电化学装置介质。 具体来说，他们 计划（a）对实验和计算机进行直接比较 皮秒时间尺度上的玻璃化转变的模拟结果，（B） 测试他们以前的工作中关于分离和 由于总结构和移动的阳离子而引起的可区分的弛豫 在某些离子液体体系中的亚结构，和（c）产生第一个 完整的非低温皮秒弛豫过程中观察到的 玻璃状固体。 此外，他们将比较短时间的机械和 盐+聚合物溶剂体系中的电弛豫过程，以及 他们将尝试把他们的工作扩展到某些液态和玻璃态氧化物 系统，如P2 O 5，使用光散射方法，并以某些 高温玻璃态地球化学玻璃 需要压缩性数据。 安杰尔教授和托瑞尔教授 过去曾成功合作过。 两个实验室 强调弛豫时间谱的两端，所以它们的 不同的专业知识和设备， 每个设置。 他们的联合工作使人们能够研究单一的 在很大的时间范围内的松弛过程。 该项目因此 有助于NSF合作科学的一个重要目标 与西欧合作的项目， 把来自美国和欧洲的科学家聚集在一起， 有着相似的研究兴趣，并希望从事互利合作的人 研究合作。 该奖项的资金将支持部分 美国主要负责人的交通和生活费用 调查员及其研究小组成员以及其他未成年人 与合作直接相关的费用。 建议的优点：合作的美国和外国调查人员是 他们以前的研究成果受到尊重，而且有一个 非常好的前景，这项拟议的研究将导致一个 对科学知识的重大贡献。 拟议 合作为美国调查人员提供了工作机会， 与国外领先的研究小组合作， 国外的设施是对自己的补充。 工作计划是 合理，预算合理。 以前的合作， 安吉尔和托雷尔教授一直富有成效， 从继续共同努力中获得的额外互利是 高 资助：该奖项不会重复其他资助。 校长 研究人员从NSF材料部门获得项目支持 研究，固态化学计划，批准号DMR-8304887。这 建议的INT奖将资助增加一个重要的 研究项目国际层面。 校长 调查员在其国内方面得到其他支助， 能源部的研究。

Objectives and Relevance to Program Objectives: This recommended award would support collaborative research between Professor Charles A. Angell, Purdue University, and Professor L.M. Torell, Chalmers University of Technology, Gothenburg, Sweden. They will continue their work on the elucidation of time-dependent processes in potentially important solid state electrochemical device media. Specifically, they plan to (a) make direct comparisons of experimental and computer simulation results of glass transitions on picosecond time scales, (b) test predictions from their former work about separate and distinguishable relaxations due to total structure and mobile cation substructure in certain ionic liquid systems, and (c) produce the first complete non-cryogenic picosecond relaxation process observed in a glassy solid. Additionally, they will compare short-time mechanical and electrical relaxation processes in salt + polymeric solvent systems, and they will try to extend their work to certain liquid and glassy oxide systems, such as P2O5, using light-scattering methods, and to certain geochemical glasses for which high temperature glassy state compressibility data are needed. Professors Angell and Torell have successfully worked together in the past. Their two laboratories emphasize opposite ends of the relaxation time spectrum, so their research is strengthened by the different expertise and equipment of each setting. Their joint work has permitted research on single relaxation processes over a large range of times. The project thus contributes to an important objective of NSF's cooperative science programs with Western Europe, which is to stimulate scientific progress by bringing together scientists from the U.S. and Europe who have similar research interests and who wish to engage in mutually beneficial research cooperation. Funds from this award would support partial transportation and subsistence expenses for the U.S. principal investigator and members of his research group, as well as other minor costs directly related to the collaboration. Merit of Proposal: The cooperating U.S. and foreign investigators are respected for their previous research accomplishments, and there is a very good prospect that this proposed research will lead to a significant contribution to scientific knowledge. The proposed cooperation presents the U.S. investigators with the opportunity to work with a leading foreign research group and to use highly specialized facilities abroad that are complementary to their own. The work plan is sound and the budget is reasonable. Previous collaboration between Professors Angell and Torell has been productive, and the likelihood of additional mutual benefit from a continuation of the joint effort is high. Funding: This award will not duplicate other funding. The principal investigator receives project support from NSF's Division of Materials Research, Solid State Chemistry Program, Grant No. DMR-8304887. This recommended INT award would fund the addition of an important international dimension to that research project. The principal investigator receives other support for the domestic aspects of his research from the Department of Energy.