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

9600329伯根霍尔茨国际研究员奖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。该项目的奖项提供了联合研究的机会，并提供了使用国外独特或互补的设施、专业知识和实验条件的机会。这一奖项将资助为期12个月的博士后研究访问，以支持约翰·B·伯根霍尔茨博士与鲁道夫·克莱因教授在德国康斯坦茨大学的工作。了解胶体悬浮液中的基本动力学过程，对于设计和优化涉及蛋白质、涂料、颜料和涂料等胶体颗粒悬浮液过程的工程模型具有重要意义。在悬浮液和微乳液的情况下，当有吸引力的颗粒间相互作用很强时，这种理解是缺乏的。这项拟议的研究将扩展现有的为带电胶体悬浮液开发的动力学悬浮理论，以包括具有吸引人的相互作用的系统。动态光散射实验将被用来评估理论发展的成功。这项研究将阐明渗流转变附近的悬浮动力学，并为分析胶体力对宏观悬浮性能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. ***