Monte Carlo simulation of colloidal particles dynamics in a drying drop

Abstract

The work is devoted to particles dynamics simulation in a colloidal drop, when it dries on a substrate and the triple-phase boundary is fixed. Experimental observations [Deegan R. D. et. al., 2000] show a ring deposition on a solid substrate after full droplet desiccation. This phenomenon of macrolevel is known as coffee ring effect. There are other experiments that show a co-effect at the microlevel. We are talking about the formation of a quasicrystalline structure on the outer part of the ring and occurrence amorphous inner zone of ring [Mar\'ın Á. G. et. al., 2011]. The goal of this work is to check the hypothesis of other authors that this phenomenon is explained by the competition between the characteristic times of diffusional displacement of particles and their transfer by a compensation flow [Mar\'ın Á. G. et. al., 2011]. Numerical calculations using a model built on the basis of such assumptions and effects did not show the formation of a quasicrystal structure. It is probably necessary to take into account additional effects in such a system, for example, surface tension.

arXiv commentsubmitted to J. Phys. Conf. Ser. (proceedings of CSP2018)

References in corpus (4)

• Order-to-disorder transition in ring-shaped colloidal stains
• Effects of Particle Shape on Growth Dynamics at Edges of Evaporating Colloidal Drops
• Evaporation and fluid dynamics of a sessile drop of capillary size
• The model of drying sessile drop of colloidal solution

Cited by in corpus (2)

• Joint effect of advection, diffusion, and capillary attraction on the spatial structure of particle depositions from evaporating droplets
• Suppression of sawtooth oscillations when using a finite-difference scheme for mass transfer simulation via the lubrication approximation in a droplet evaporated on a substrate