Particle adhesion in model systems. Part 14.—Experimental evaluation of multilayer deposition

Deposition of Silver Nanoparticles in Geochemically Heterogeneous Porous Media: Predicting Affinity from Surface Composition Analysis

“…Among these particles some are by themselves environmental contaminants (Kessler and Hunt ;Buddemeier and Hunt 1988) while some serve as vehicles to facilitate the transport of a variety of other contaminants that otherwise would be relatively immobile without the presence of the colloids (McCarthy and Zachara 1989;Corapcioglu and Jiang 1993;Grolimund, Borkovec et al 1996;Ryan and Elimelech 1996). Different types of environmentally relevant particles have been studied, including various minerals, Rajagopalan and Chu 1982;Puls and Powell 1992;Ryde, Kihira et al 1992) bacteria and viruses, (Logan, Hilbert et al 1993;Pieper, Ryan et al 1997;Ryan, Elimelech et al 1999;Redman, Walker et al 2004;Walker, Hill et al 2005) and engineered nanoparticles (Lecoanet, Bottero et al 2004;Brant, Lecoanet et al 2005;Saleh, Phenrat et al 2005;Chen and Elimelech 2006;Espinasse, Hotze et al 2007;Jaisi, Saleh et al 2008). The transport and mobility of engineered nanoparticles have been of particular interest over the past few years due to concerns over possible environmental and health impact of these materials (Hoet, Nemmar et al 1999;Colvin 2003;Borm, Robbins et al 2006;Renn and Roco 2006;Wiesner, Lowry et al 2006).…”

Dynamics of nonequilibrium deposition

“…Secondly, few-layer deposition processes have been of interest in some experimental systems. Mean-field theories of multilayer deposition with particle size and interactions accounted for were formulated [76] and used to fit such data [12,[14][15][16].…”

“…The irreversible Random Sequential Adsorption (RSA) process [21][22] models experiments of colloid and other, typically, submicron, particle deposition [4][5][6][7][8][9][10][11][12][13][14][15][16] by assuming a planar 2D substrate and, in the simplest case, continuum (off-lattice) deposition of spherical particles.…”

“…Extensive theoretical study of such systems is relatively recent and it has been motivated by experiments where submicron-size colloid, polymer, and protein "particles" were the deposited objects; see [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] for a partial literature list, as well as other articles in this issue. It is usually assumed that the main mechanism by which particles "talk" to each other is exclusion effect due to their size.…”

Locally frozen defects in random sequential adsorption with diffusional relaxation

“…The depositing particles are represented by hard-core extended objects; they are not allowed to overlap. In monolayer deposition of colloidal particles and macromolecules [3][4][5][6] one can further assume that the adhesion process is irreversible. However, recent experiments on protein adhesion at surfaces [7][8] indicate that in biomolecular systems effects of surface relaxation, due to diffusional rearrangement of particles, are observable on time scales of the deposition process.…”