International Research Fellow Awards Program: Dynamics of Colloidal Suspensions with Attractive Interactions

9600329 Bergenholtz国际研究员奖励计划使美国科学家和工程师能够在国外进行三到二十四个月的研究。该计划的奖励为联合研究提供了机会，并利用独特或互补的设施、专业知识和国外的实验条件。该奖项将资助一个为期12个月的博士后访问，以支持Johan B. Bergenholtz博士与德国康斯坦茨大学Rudolf Klein教授的工作。了解胶体悬浮液的基本动力学过程对于设计和优化涉及胶体大小颗粒悬浮液（如蛋白质、油漆、颜料和涂料）的过程的工程模型的制定是重要的。当吸引粒子间的相互作用很强时，这种理解在悬浮液和微乳液的情况下是缺乏的。提出的研究将扩展现有的动力学悬浮液理论，为带电胶体悬浮液开发，包括具有吸引相互作用的系统。动态光散射实验将用于评估理论发展的成功。该研究将阐明渗流过渡附近的悬浮液动力学，为分析胶体力对宏观悬浮液性质的影响提供更好的基础。* * *

9600329 Bergenholtz The International Research Fellow Awards Program enables U.S. scientists and engineers to conduct three to twentyfour months of research abroad. The program's awards provide opportunities for joint research, and the use of unique or complementary facilities, expertise and experimental conditions abroad. This award will fund a twelve-month postdoctoral research visit which will support Dr. Johan B. Bergenholtz's work with Professor Rudolf Klein at the Universitat Konstanz in Germany. An understanding of the fundamental dynamical processes in colloidal suspensions is important to the formulation of engineering models for the design and optimization of processes involving suspensions of colloidal-sized particles, such as proteins, paints, pigments, and coatings. This understanding is lacking in the case of suspensions and microemulsions when attractive interparticle interactions are strong. The proposed research will extend existing dynamical suspension theories, developed for charged colloidal suspensions, to include systems with attractive interactions. Dynamic light scattering experiments will be used to assess the success of the theoretical developments. This study will elucidate the suspension dynamics near the percolation transition and will provide a better foundation for analyzing the role of colloidal forces on macroscopic suspension properties. ***