U.S.-Germany Cooperative Research: Light Scattering from Colloids

该奖项支持大卫韦茨博士和宾夕法尼亚大学的博士后 与约翰尼斯大学物理系的托马斯·帕尔伯格合作， 古滕贝格大学，美因茨。 美因茨小组已经开发了一种双色互相关技术，它可以抑制多次散射的干扰。 的 宾夕法尼亚大学的研究小组开发了扩散波光谱学（DWS）， 利用多重散射。 这两种方法是互补的，一种提供平均值， 一个提供大范围散射角的信息，另一个提供更详细的角度相关信息。 在这项工作中，两个小组的专门知识将结合起来， 研究特定胶体悬浮液的相同样品， 在一个完整的浓度范围内的知识。

This award supports Dr. David Weitz and a post doc from the University of Pennsylvania in a collaboration with Thomas Palberg of the Department of Physics at the Johannes Gutenberg University, Mainz. The Mainz group has developed a two-color cross- correlation technique that suppresses the interference of multiple scattering. The Pennsylvania group has developed diffusing-wave spectroscopy (DWS), which specifically exploits multiple scattering. The two methods are complementary, one providing average information for a large range of scattering angle, the other providing more detailed, angle- dependent information. In this work, the expertise of the two groups will be combined to study identical samples of particular colloidal suspensions and to extend important knowledge over a complete range of concentrations.