Deposition Kinetics of Particles at a Solid Surface Governed by the Ballistic Deposition Model

Carl, Ph.; Schaaf, Pierre; Voegel, Jean‐Claude; Stoltz, Jean‐François; Adamczyk, Zbǐgniew; Senger, Bernard

doi:10.1021/la980582m

Cited by 9 publications

(2 citation statements)

References 13 publications

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“…These were slightly more rapid than predicted by the BD model . These results were, however, not confirmed by recent experiments performed by Carl et al who found good agreement between the experimental data and the BD model predictions. These results seem thus to confirm that the ballistic deposition model can be used as a first approximation to describe both the structure of irreversibly deposited layers under the strong influence of gravity and the adsorption kinetics.…”

Section: Influence Of the Gravity On The Adsorption/deposition Processcontrasting

confidence: 77%

From Random Sequential Adsorption to Ballistic Deposition: A General View of Irreversible Deposition Processes

2000

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Irreversible adsorption/deposition processes are defined as processes in which, once adsorbed, the particles can neither desorb from nor diffuse along the surface. These processes are commonly encountered when macromolecules or colloidal particles deposit on solid surfaces. This article presents a general and unified picture of these processes based mainly on experimental, simulation, and theoretical results accumulated by the authors over recent years. We describe first the influence of surface exclusion effects on the adsorption process under negligible influence of gravity. Essential results relative to the random sequential adsorption (RSA) model are given. The influence of particle diffusion and hydrodynamic interactions during the adsorption process in the deposition zone near the deposition plane on the structure of the assembly of deposited particles and on the adsorption kinetics are analyzed. It is shown that hydrodynamic interactions have the tendency to randomize the position of the particles over the available surface and thus to render the adsorption process RSA-like. Model predictions are confirmed by experimental data. For the deposition of larger particles gravity plays an important role, and the deposition process is characterized by a dimensionless particle radius R*. The case of an infinite value of R* is first discussed and the ballistic deposition (BD) model is described. The deposition processes characterized by R* values ranging from 0.6 to 3.3 are then analyzed. For such R* values one observes a smooth transition from the RSA to the BD behavior when R* is increased.

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Section: Influence Of the Gravity On The Adsorption/deposition Processcontrasting

confidence: 77%

From Random Sequential Adsorption to Ballistic Deposition: A General View of Irreversible Deposition Processes

2000

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“…To describe irreversible adsorption kinetics and the structure of the layers formed by deposited objects (usually spherical particles), various models can be considered. The most popular model on a 2D surface is the random generalized sequential adsorption (RSA) model, − which has recently received many extensions such as reversible desorption and surface mobile particles. , The RSA model assumes the deposition of monodisperse and hard circles on a surface having periodic boundary conditions. The x , y positions of the circle centers are chosen randomly at the deposition plane.…”

Section: Introductionmentioning

confidence: 99%

Computer Simulations of Homogeneous Deposition of Liquid Droplets

2004

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Understanding the deposition of liquid droplets on surfaces is essential in many environmental and industrial processes. In this paper, we describe computer simulations of homogeneous deposition of liquid droplets on an ideal, smooth, and horizontal solid surface. The statistical evolution of droplet deposition and growth processes are investigated. It is found that three basic events, namely, deposition, incorporation, and coalescence, produce droplets of different sizes and that the droplet size polydispersity is continuously increasing with time leading to a bimodal distribution. By considering the total number of droplets N tot on the surface versus time, we demonstrate that four growth regimes must be considered. These regimes reflect the relative influence of the three events during the deposition process. Variation with time of the surface coverage Γ as a function of the contact angle θ between the droplets and the surface is also investigated. The effect of a variable contact angle on the value of surface saturation and dynamical growth is calculated. Finally, by considering the total mass of the deposited material and surface coverage, some guidelines to achieve an efficient droplet deposition process and surface coverage versus total droplet mass are proposed.

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Kinetics of Particle and Protein Adsorption

Adamczyk

2004

Surface and Colloid Science

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Deposition Kinetics of Particles at a Solid Surface Governed by the Ballistic Deposition Model

Cited by 9 publications

References 13 publications

From Random Sequential Adsorption to Ballistic Deposition: A General View of Irreversible Deposition Processes

From Random Sequential Adsorption to Ballistic Deposition: A General View of Irreversible Deposition Processes

Computer Simulations of Homogeneous Deposition of Liquid Droplets

Kinetics of Particle and Protein Adsorption

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