Thermodynamics and Kinetics of Crystal Growth in Soft Systems

摘要CTS-0081159R。成核和结晶过程在许多工业应用中是重要的，包括分子自组装和纳米晶体材料的合成，其中原子和分子之间的长程力的作用主导着晶体结构的演变。PI建议从实验和理论上研究带电(“软”)胶体的结晶。长程分子作用力在胶体参数范围内的作用将使用测试测量技术(如光学、中子和X射线)和适用的经典本构模型进行研究。PI选择胶体的性质(例如单分散胶乳颗粒)、其几何形状、组成以及与可用的束流技术(倒易空间)的适合性。其中重要的一部分是数据分析和理论检验。研究了平衡热力学和结晶动力学的相对作用、晶体/液体界面相互作用等问题。

AbstractCTS-0081159R. Rajagopalan, University of FloridaThe processes of nucleation and crystallization are important in a number of industrial applications, including molecular self-assembly and synthesis of nanocrystalline materials where the role of long range forces between atoms and molecules dominates the evolution of the crystal structure. The PI proposes to study, experimentally and theoretically, the crystallization of charged ("soft") colloids. The role of long range molecular forces within the parametric range of colloids will be investigated using tested measurement techniques (such as optical, neutron and X-Rays) and classical constitutive models as applicable.The PI selected the nature of the colloid (e.g. monodisperse latex particles), its geometry, composition and suitability to the available beam techniques ("reciprocal-space"). An important section is devoted to data analysis and theoretical examination. Such questions as the relative role of equilibrium thermodynamics and crystallization kinetics, crystal/liquid interface interaction, will be researched.