Theoretical Investigation of Homogenous Nucleation

均质成核的理论研究

• 批准号: 9413301
• 负责人: Xiao Cheng Zeng
• 金额: $ 17万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-03-15 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413301&HistoricalAwards=false
• 关键词: Theoretical; Investigation; Homogenous; Nucleation

ABSTRACT CTS-9413301 X. C. Zeng, U. of Nebraska, Lincoln The objective is to develop a nucleation theory based on statistical mechanics (density-functional approach and the Monte Carlo simulation) which would agree with the experimental facts previously unexplained by other nucleation theories. The rate of nucleation in both gases (droplet formation) and liquids (cavitation, boiling), as well as related characteristics such as critical supersaturation and the tensile strength, will be determined . Five types of fluids systems will be investigated to test the theory. Together with Dr. D. V. Oxtoby (University of Chicago), the P. I. has proposed an original approach, which may lead to fundamental advances in the field of nucleation. The nucleation theory to be developed in this project has relevance on the formation of hazardous aerosols, photochemical smog, acid rain, green house effect in the troposphere, cloud formation and in other areas of environmental science. A second area of relevance is in materials synthesis form aerosol precursors. ***

内布拉斯加州大学林肯分校的曾晓昌（音），目标是建立一个基于统计力学的成核理论（密度-函式方法和蒙特卡罗模拟），该理论将与以前其他成核理论无法解释的实验事实相一致。将确定气体（液滴形成）和液体（空化，沸腾）中的成核速率，以及相关特性，如临界过饱和和抗拉强度。将研究五种类型的流体系统来验证该理论。与d.v.奥克斯托比博士（芝加哥大学）一起，p.i.提出了一种新颖的方法，这可能会导致成核领域的根本进步。本项目拟发展的成核理论与有害气溶胶的形成、光化学烟雾、酸雨、对流层温室效应、云的形成以及其他环境科学领域有关。第二个相关领域是气溶胶前体的材料合成。＊＊＊