NER: Generic Production of Nanoparticles in Plasma Microreactors

NER：等离子体微反应器中纳米颗粒的通用生产

• 批准号: 0404353
• 负责人: Konstantinos Giapis
• 金额: $ 13万
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-07-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0404353&HistoricalAwards=false
• 关键词: NER; Generic; Production; Nanoparticles; Plasma

Generic Production of Nanoparticles in Plasma MicroreactorsThis project focuses on using atmospheric plasma micro-reactors for the generic production of semiconductor and metal nanoparticles from gaseous precursors. Size control is accomplished by residence time in the reducing-conditions reaction zone while simultaneously limiting coagulation by particle charging in the micro-plasma. Narrowly-distributed nano-particles in the 1-3nm size regime are produced, and their optoelectronic and magnetic properties are characterized. Oppositely-charged nano-particles of dissimilar materials are combined to form particle pairs with novel properties. The new synthesis technique is simple, inexpensive, and yet it produces high quality nanoparticles. It offers easy access to a variety of materials at the nanoscale with novel optical, electrical, and magnetic properties. For example, Si nanoparticles can be made to produce red, green, or blue light, promising integration with silicon electronics to increase communication speeds. Also, nanoparticles with different properties may be combined to produce nanomaterials capable of self-assembly with added functionality, for example, magnetic-luminescent particle pairs.

等离子体微反应器中纳米颗粒的通用生产该项目侧重于使用大气等离子体微反应器从气体前体中生产半导体和金属纳米颗粒。通过在还原条件下反应区的停留时间来实现尺寸控制，同时通过微粒在微等离子体中的充电来限制凝聚。制备了尺寸为1-3 nm的窄分布纳米粒子，并对其光电性能和磁学性能进行了表征。不同材料的相反带电的纳米粒子被结合在一起，形成具有新性质的粒子对。这种新的合成技术简单、廉价，但它可以生产出高质量的纳米颗粒。它提供了各种纳米级的材料，具有新颖的光学、电学和磁性。例如，硅纳米颗粒可以产生红光、绿光或蓝光，有望与硅电子集成以提高通信速度。此外，具有不同性质的纳米颗粒可以组合在一起，以产生能够自组装的具有附加功能的纳米材料，例如，磁-发光颗粒对。