CAREER: Optical Manipulation of Colloidal Systems

CTS-9734136马尔，大卫W。M. 科罗拉多矿业学院 当材料的微观组分相互作用并组装成介观尺寸的形态时，小长度尺度的结构出现。 本项目将研究分子间的相互作用和形态演化过程中形成的界面性质之间的联系。 密集的胶体模型系统探测新的光学技术，可以操纵这样的系统，和统计力学建模方法的组合将被应用。 我们将建立一个新的实验装置，利用快速扫描光阱来建立任意的光学势威尔斯。共聚焦显微镜技术，可以表征，在原位，相对致密的胶体结构将被开发。 研究体系中的成核作用和胶体晶体的模板生长将是两个重点领域。 教育目标是通过开发新课程并将分子水平的材料添加到当前的课程中，将本研究中获得的物理见解带到本科和研究生阶段的课堂上。 此外，还将使用新的教学技术，包括万维网、用于访问万维网的浏览器以及最先进的计算机语言，以改善教育环境。 理解胶体系统中微观相互作用与宏观性质之间的联系是合成具有专门设计的微观形态的新材料的重要步骤。 ***

CTS-9734136 Marr, David W. M. Colorado School of Mines Structure at small length scale arises as the material microscopic components interact and assemble themselves into mesoscopic-sized morphologies. This project will investigate the link between molecular interactions and the properties of interfaces that develop during morphology evolution. A combination of dense colloidal model systems probed by new optical techniques that can manipulate such systems, and statistical mechanical modeling methods will be applied. A new experimental device will be constructed that uses a rapidly scanning optical trap to build arbitrary optical potential wells. The technique of confocal microscopy which can characterize, in situ, the relatively dense colloidal structures will be developed. The study of nucleation in systems using nuclei of various structure and the templated growth of colloidal crystals will be two areas of focus. The education goal is to bring the physical insights obtained in this study to the classroom at both undergraduate and graduate levels by developing new courses and adding molecular level material to current coursework. In addition, new pedagogical techniques including the World Wide Web, browsers used to access the web, as well as state-of-the-art computer languages will be used to enhance the educational environment. Understanding the link between microscopic interactions in colloidal systems and macroscopic properties is an essential step in the synthesis of new materials with specifically designed microscale morphologies. ***