中文摘要：

有机气溶胶的热/动力学研究是多学科交叉的前沿研究领域,其核心问题主要是非理想混合包括挥发性、液-液相分离、非平衡传质动力学等,精确测量这些过程相关理化参数是目前研究的瓶颈。光镊系统可以悬浮气溶胶单颗粒,获得高信噪比受激拉曼光谱,在研究气溶胶物理化学性质与其大气效应中具有独到优势。被广泛用于有机及其与无机混合体系气溶胶的吸湿性、挥发性、水传质动力学、液-液相分离过程研究中。本文综述了激光悬浮气溶胶单颗粒技术的研究进展,主要包括光镊技术的原理和技术手段,以及在气溶胶关键物理化学参数测量中的应用。通过光镊系统,一方面可以获得重要理化参数的精确结果,另一方面可以对实际环境中悬浮液滴的状态进行模拟测量,从而为大气科学的研究与污染治理提供重要支撑。

英文摘要：

Investigation of thermodynamics and kinetics process of organic aerosol is a cross-cutting field of multidisciplinary research,in which core issues are non-ideal mixing,including volatility,liquid-liquid phase separation and non-equilibrium mass transfer kinetics. At present,the study of the accurate measurement of the relevant physical and chemical parameters of these processes enters the bottleneck period. The optical tweezers system allows the aerosol single particles to be in a suspended state,resulting in a high signal-to-noise ratio of the stimulated Raman spectra. The system has unique advantages in the study of the physical and chemical properties of aerosols and its atmospheric effects. The system has been widely used in the research of the hygroscopicity,volatility,water mass transfer kinetics,and liquid-liquid phase separation processes of organic and inorganic mixture system aerosol. In this review,the progress of laser aerosol single particle technology is reviewed,including the principle and technical means of optical tweezers technology and the measurement of key physical and chemical parameters of aerosols. The results show that on one hand,accurate results of important physical and chemical parameters can be obtained by optical tweezers; on the other hand,thestate of suspended droplets can be simulated and measured in the actual environment,which provides important support for atmospheric science research and pollution control.