The role of seeds in heterogeneous nucleation, growth and ripening: A quantitative confocal microscopy and scattering study

种子在异质成核、生长和成熟中的作用：定量共焦显微镜和散射研究

• 批准号: 51380867
• 负责人: Professor Dr. Stefan U. Egelhaaf (†)
• 金额: --
• 依托单位: Lehrstuhl für Physikalische Chemie II
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2007
• 资助国家: 德国
• 起止时间: 2006-12-31 至 2014-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/51380867?language=en
• 关键词: role; seeds; heterogeneous; nucleation; growth

We propose to quantitatively study the process of heterogeneous nucleation and growth of hard and soft spheres with and without charges, including binary systems. Heterogeneous nucleation will be induced by large hard and soft spheres. The effect of the size, i.e. curvature, of the seeds on nucleation and growth as well as on the properties of the formed crystals will be investigated quantitatively on a microscopic, individual particle level. Quantitative information on individual particles will be obtained by confocal microscopy. We will continue to study hard spheres and start to investigate the crystallization of uncharged and charged soft spheres, namely fluorescently-labelled microgel particles. During the last funding period, the synthesis of these particles was established and their properties, such as their relatively large size and uorescent dyes, were optimized for the planned crystallization studies.

我们打算定量地研究带和不带电荷的硬球和软球的非均相成核和生长过程，包括二元体系。大的硬球和软球会诱发非均相成核。种子的大小（即曲率）对成核和生长的影响，以及对形成的晶体的性质的影响，将在微观的单个粒子水平上进行定量研究。单个粒子的定量信息将通过共聚焦显微镜获得。我们将继续研究硬球，并开始研究不带电和带电软球的结晶，即荧光标记的微凝胶颗粒。在上一个资助期间，这些颗粒的合成已经建立，它们的性质，如它们相对较大的尺寸和荧光染料，为计划的结晶研究进行了优化。