Related Experiment Video
Updated: Jul 26, 2026

A System to Create Stable Nanoparticle Aerosols from Nanopowders
Published on: July 26, 2016
Simple Model of Aerosol Particle Formation by the Evaporation-Condensation Method
1Chemical Engineering Department, Osaka Prefecture University, 1-1 Gakuencho, Sakai, 599-8531, Japan
Abstract:
From an engineering point of view the present authors have proposed the simple model of a homogeneous nucleation relationship in the liquid phase that can predict the number concentration of nucleated particles in various operating conditions. Experiments of liquid-phase nucleation in which the precursor monomers were generated by several methods have successfully confirmed the predictions of the model. In the present paper, our previous model of homogeneous nucleation is extended to the case in which the precursor monomers are generated in a gas-phase system. First, a relationship between number concentration and mean volume diameter of nucleated aerosol particles and operating conditions is obtained considering the free molecular regime around the critical nuclei, which is the main difference with the liquid phase. Second, the validity of the relation lies in experimental use of dioctyl sebacate particles generated by evaporation-condensation. As a result, the predictions are in excellent agreement with the experimental results after considering substantial losses of monomers and particles to the walls of the experimental system because in the gasphase the diffusion velocity and the critical supersaturation ratio of monomer are higher than those in the liquid phase. Copyright 2000 Academic Press.
Related Concept Videos
Vaporization
Phase Transitions: Vaporization and Condensation
Colloids
Precipitate Formation and Particle Size Control
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
Atomic Absorption Spectroscopy: Atomization Methods
The Colloidal State

