Engineering Research Equipment: Laser Light Scattering Apparatus

工程研究设备： 激光光散射仪

• 批准号: 9500156
• 负责人: Arijit Bose
• 金额: $ 5.2万
• 依托单位: University of Rhode Island
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-04-01 至 1996-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9500156&HistoricalAwards=false
• 关键词: Engineering; Research; Equipment; Laser; Light

CTS-9500156 ABSTRACT A laser light scattering apparatus which will be purchase, and will be primarily utilized for a project on the production and characterization of the properties of a variety of inorganic nanoparticles. New aqueous colloidal processing technique that utilizes intravesicular reactions to produce batches of nanometer sized inorganic particles have been developed. The objectives are better understanding and controlling the particle formation technique, and understanding the properties of the nanoparticles. The small size of the particles could dramatically alter electron wave functions, leading to 'quantum' size effects. Furthermore, particles in this size range contain mostly 'surface' atoms (bond lengths and mobilities for these atoms can differ from that in bulk), leading to a large impact on the properties of these particles. This apparatus will also be used to characterize a variety of surface functionalized magnetic nanoclusters that are being used in a magnetic immunoabsorption technique for cell and plasmid separations, obtain accurate size distributions in magnetic colloidal preparations so that neutron and X-ray scattering data on the same sample can be interpreted properly, as well as monitor kinetics of tubulin assembly/disassembly in response to the environmental toxin cadmium. ***

CTS-9500156 摘要 将购买的激光光散射装置，主要用于各种无机纳米颗粒的生产和特性表征项目。 已经开发出新的水性胶体加工技术，该技术利用囊内反应来生产批量的纳米尺寸无机颗粒。 目标是更好地理解和控制颗粒形成技术，并了解纳米颗粒的特性。 粒子的小尺寸可以极大地改变电子波函数，导致“量子”尺寸效应。 此外，此尺寸范围内的颗粒主要包含“表面”原子（这些原子的键长和迁移率可能与本体不同），从而对这些颗粒的性能产生很大影响。 该装置还将用于表征用于细胞和质粒分离的磁性免疫吸收技术中使用的各种表面功能化磁性纳米团簇，获得磁性胶体制剂中准确的尺寸分布，以便在相同的表面上获得中子和 X 射线散射数据可以正确解释样品，并监测微管蛋白组装/分解响应环境毒素镉的动力学。 ***