Impact of Size Effects on Formation of Nanoparticles from Supersaturated Vapor

0433695 - ÚCHP 2015 RIV CZ eng C - Conference Paper (international conference)
Levdansky, V.V. - Smolík, Jiří - Ždímal, Vladimír - Moravec, Pavel
Impact of Size Effects on Formation of Nanoparticles from Supersaturated Vapor.
Proceedings of 15th Annual Conference of the Czech Aerosol Society. Prague: Czech Aerosol Society, 2014 - (Kubelová, L.), s. 49-50. ISBN 978-80-86186-64-1.
[Annual Conference of the Czech Aerosol Society /15./. Valtice (CZ), 30.10.2014-31.10.2014]
Institutional support: RVO:67985858
Keywords : aerosol nanoparticles * formation * size effects
Subject RIV: CF - Physical ; Theoretical Chemistry
http://cas.icpf.cas.cz/download/Sbornik_VKCAS_2014.pdf

The mechanism of nanoparticle formation in condensation of a supersaturated vapor is of interest for different kinds of atmospheric phenomena and processes of nanotechnology (e.g. manufacture of nanoparticles). Homogeneous nucleation is the initial stage of nanoparticle formation. The critical cluster size is one from the main parameters in the classical nucleation theory. The value of the critical cluster size is usually found from the Kelvin equation which does not depend on the condensation coefficient. In the general case the size dependence of the condensation coefficient can influence the critical cluster size (Levdansky, 2002). The size dependence of the cohesive energy in the nanoparticle can also affect the size of the critical cluster. Below we consider the joint influence of above-mentioned size effects on the critical cluster size, the rate of nucleation and the growth rate of arising nanoparticles.
Permanent Link: http://hdl.handle.net/11104/0237860