전북대학교
Physicochemical properties of aerosols
Phase transition of aerosol particles
Atmospheric aerosol particles can undergo phase transitions such as liquid-liquid phase separation, efflorescence, and deliquescence as humidity changes. In order to predict the role of the aerosol particles in climate, visibility, and atmospheric chemistry, information the phase of the particles is required. We are currently studying these phase transitions of secondary organic aerosols, organic/inorganic aerosols using opticalmicroscopy, temperature-RH controlled flow-cell, Raman spectroscopy.
Viscosity of aerosol particles
The viscosity of aerosol particles is a fundamental property&that is still poorly understood. However, knowledge of the viscosity is important to get more accurate modeling results of size distribution, mass concentration, and heterogeneous kinetics of particles in the atmosphere. We quantify the relative-humidity dependent viscosities of aerosol particles using a bead-mobility technique and a poke-flow technique in conjunction with fluid simulations.