美国沙漠研究所和内华达大学研究生院助理教授王小亮博士学术报告

发布者:系统管理员发布时间:2010-04-27浏览次数:7971

王小亮博士学术报告
报告题目:System for in situ Characterization of Nanoparticles Synthesized in a Thermal Plasma Process
报告人:王小亮博士  美国沙漠研究所和内华达大学研究生院助理教授
报告时间:2010428上午9:30
报告地点:硅材料国家重点实验室会议室(半导体厂内3号楼)
报告摘要:We designed a particle diagnostic system that is able to measure particle size and charge distributions from low stagnation pressure (≥ 746 Pa) and high temperature (2000 – 4000 K) environments in near real time. This system utilizes a sampling probe interfaced to an ejector to draw aerosol from the low pressure chamber. Particle size and charge distributions are measured with a scanning mobility particle sizer. A hypersonic impactor is mounted in parallel with the scanning mobility particle sizer to collect particles for off-line microscopic analysis. This diagnostic system has been used to measure size and charge distributions of nanoparticles (Si, Ti, Si-Ti-N, etc.) synthesized with our thermal plasma reactor. We found that the mean particle size increases with operating pressure and reactant flow rates. We also found that most particles from our reactor are neutral for particles smaller than 20 nm, and that the numbers of positively and negatively charged particles are approximately equal.
 
王小亮博士简介:
学习经历:
20065月,美国明尼苏达大学机械工程系博士
20026月,美国明尼苏达大学机械工程系硕士
20007月,清华大学热能工程系和环境科学与工程系双学士
工作科研经历:
200906至今       美国沙漠研究所       助理教授
200911至今       美国内华达大学       助理教授
空气污染监测,污染源表征和空气污染排放系数测量,汽车尾气排放测量,气溶胶测量仪器开发
 
200703—200905     美国TSI 公司          资深研发工程师
200510— 20073      美国TSI 公司          高级研发工程师
发明研制空气浮尘质量浓度实时监测器DustTrak DRX Aerosol Monitor),研制汽车尾气排放检测凝聚核法粒子计数器 (Engine Exhaust Condensation Particle Counter),优化发动机废气排放颗粒物粒径谱仪数据分析(Engine Exhaust Particle Sizer),研制气溶胶静电计 (Electrometer),研制激光粒子计数计 (Optical Particle Counter),实验研究气溶胶电荷中和器 (Neutralizer)