Nano Science and Technology Institute
Nanotech 2007 Vol. 4
Nanotech 2007 Vol. 4
Technical Proceedings of the 2007 NSTI Nanotechnology Conference and Trade Show, Volume 4
Chapter 2: Nanoparticles

Condensation and Evaporation of a Nano-sized Particle Moving in a Fluid Environment

Authors:M.Y. Yi, J.W. Lee and M.J. Lee
Affilation:Pohang University of Science and Technology, KR
Pages:218 - 221
Keywords:nano particle, molecular dynamics, condensation, evaporation
Abstract:Condensation and evaporation of a low temperature nano-sized argon particle moving in a gas/vapor environment was analyzed using the molecular dynamics simulation. First evaporation temperature for various heating rates was found and successfully compared with the analytic result. Condensation and evaporation rates observed through simulation depended on particle velocity and thermodynamic properties of the gas, and the radial distribution of particle temperature was found to be a good indicator to characterize the process. Characteristics of condensation and evaporation for two different particle velocities and various environmental conditions were discussed in detail. In low gas density environments all the gas atoms got condensed on the particle, and in high gas density environment condensation / evaporation characteristics became much different depending on particle velocity.
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