Characterization of the Thermodynamic and Kinetic Properties of Aerosols in the Kelvin Regime

这个项目是在实验室中研究与小气溶胶（大约3-50纳米）生长有关的热力学性质，作为组成、温度和大小的函数。目前，对于作为大气中气溶胶形成和增长模式的关键核和输入的非常小的粒子，我们所知甚少，而且模式预测与实地观测之间存在很大差异。这项工作有望导致对粒子相变的开尔文效应（粒子表面张力效应）和纯气溶胶的新粒子形成有更深入的了解。在研究的最后阶段，将收集并分析选定尺寸的实地样本，以便与实验室结果进行比较。

This project is investigating the thermodynamic properties associated with the growth of small aerosols (approximately 3-50 nm) in the laboratory as a function of composition, temperature and size. At present, very little is known about very small particles that serve as the critical nuclei for nucleation and input for models of aerosol formation and growth in the atmosphere and large discrepancies exist between model predictions and field observations. This work is expected to lead to a greater understanding of the Kelvin effect (particle surface-tension effect) on particle phase transitions and the new particle formation of pure aerosols. During the final phase of the study, size-selected field samples will be collected and analyzed for comparison with the laboratory results.