Deposition kinetics of particles at a solid surface governed by the ballistic deposition model

Citation
P. Carl et al., Deposition kinetics of particles at a solid surface governed by the ballistic deposition model, LANGMUIR, 14(25), 1998, pp. 7267-7270
Citations number
12
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
LANGMUIR
ISSN journal
07437463 → ACNP
Volume
14
Issue
25
Year of publication
1998
Pages
7267 - 7270
Database
ISI
SICI code
0743-7463(199812)14:25<7267:DKOPAA>2.0.ZU;2-1
Abstract
The deposition kinetics of polymeric microspheres (average diameter 8.742 m u m, density 1.50 g.cm(-3)) on smooth silica plates was determined experime ntally. The measurements were carried out in a sedimentation cell using a d irect microscope observation technique supplemented by the image analysis. The experimental data were interpreted in terms of the ballistic deposition (BD) model, where the irreversibility of the adsorption is assumed. It was found that both deposition kinetics and the jamming coverage (determined t o be 0.60 +/- 0.02) were in quantitative agreement with the ED model. Our e xperimental data constitute, therefore, a direct proof of the validity of t his model for characterizing particle deposition processes driven by a stro ng gravitational force field.