GOALI: Aerosol Manufacture of Nanoparticles and Selected Applications

abstractcts m.f——9978926。Becker， J.R. Brock和J.W. Keto, UT - Austin， H.D. Glicksman，杜邦提出了对“微颗粒激光烧蚀”过程的基本理解和建模，并将该过程扩展到在干燥或潮湿表面上收集未凝聚的纳米颗粒。采用该方法可获得由多种材料组成的5 ~ 15 nm尺寸分布窄的纳米颗粒，产量高。模拟和实验研究将集中在纳米颗粒的成核和生长过程，激光烧蚀材料的蒸发，改变周围气体对纳米颗粒的化学变化，以及原位颗粒大小的静电选择。这是德克萨斯大学奥斯汀分校和杜邦聚合物和电子材料公司之间的一个多学科校企合作项目（GOALI），旨在生成、表征和使用纳米颗粒，并立即应用于厚膜糊状物。如果成功，该研究将促进对烧蚀和成核过程的理解，并将应用于电子、传感器和光学器件中重要的新材料和结构的产生。

AbstractCTS-9978926M.F. Becker, J.R. Brock, and J.W. Keto, UT - Austin, H.D. Glicksman, DuPontFundamental understanding and modeling of the "laser ablation of microparticles" process and the extension of the process to the collection of unagglomerated nanoparticles on dry or wet surfaces is proposed. Nanoparticles of 5 to15 nm with narrow size distribution composed of various materials can be obtained with the suggested approach at large production rates. Modeling and experimental investigation will focus on nanoparticle nucleation and growth process, evaporation of materials by laser ablation, chemical changes in nanoparticles by varying the surrounding gas, and in situ particle size electrostatic selection. This is a multidisciplinary collaborative university-industry project (GOALI) between the University of Texas at Austin and DuPont Polymer and Electronic Materials Co. for the generation, characterization and use of nanoparticles with immediate application for thick film pastes. If successful, the research will advance understanding of ablation and nucleation processes, and will have application to generation of new materials and structures of importance in electronics, sensors and optical devices.