FRG: Synthesis of Well-Defined Nanosize Particles and Their Role in the Formation of Simple and Composite Monodispersed Colloids

这个重点研究小组项目将解决简单和复合单分散胶体的均匀颗粒形成的优先领域。重点将是纳米颗粒的合成，以及其独特性质的建模和表征，这些性质的发展尺寸小于典型的亚微米级胶体尺度。实验和理论证据表明，许多单分散的球形和其他形状的胶体是由纳米级单元的聚集形成的，将开发连接纳米和微米尺寸的颗粒。将研究由表面沉淀和由较小颗粒粘附在定义明确的核上产生的涂层。成核，纳米粒子的生长，以及它们的聚集，将动力学控制，以确定不同的过程阶段，将在理论上建模。中间产品和最终产品都将使用包括动态和静态光散射相结合的技术在形状、尺寸和结构方面进行表征。对科学和技术的更广泛影响将跨越涉及物理和生物学科的领域。这些包括催化，颜料，粘土，磁性，铁电体和几个医疗领域，如传感器和局部药物释放。这一优秀的团队努力将研究和教育结合在一起，对工业界高度关注的领域产生了重大影响。在这些纳米科学和技术领域接受培训的学生将在就业市场上非常有竞争力。 该奖项由化学部和材料研究部共同资助。

This Focused Research Group project will address priority areas in the formation of uniform particles of simple and composite monodispersed colloids. The focus will be on the synthesis of nanosized particles, and modelling and characterization of their unique properties which develop for dimensions smaller than the typical submicron-sized colloid scales. Experimentral and theoretical evidence that a great many monodispersed colloids of spherical and other shapes are formed by aggregation of nanosized units will be developed to link the nansize and micrometer size particles. Coatings produced by surface precipitation and by adhesion of smaller particles on well-defined cores will be investigated. Nucleation, growth of nanoparticles, and their aggregation, will be kinetically controlled to identify different process stages which will be modelled theoretically. Both the intermediate and final products will be characterized in terms of shape, size and structure using techniques that include combined dynamic and static light scattering. %%%The broader impacts on science and technology will span areas involving both physical and biological disciplines. These include catalysis, pigments, clays, magnetics, ferroelectrics, and several medical areas such as sensors and localized drug release. This excellent team effort integrates research and education in such a way as to have a significant impact on areas of high interest to industry. Students trained in these areas of nanoscience and technology will be very competitive in the job market. This award is co-funded by the Chemistry Division and the Division of Materials Research.