Universal scaling of nanoparticle deposition by colloidal droplet drying
Fluid Dynamics
2023-01-27 v1 Computational Physics
Abstract
We present a comprehensive study of nanoparticle deposition from drying of colloidal droplets. By means of lattice Boltzmann modeling and theoretical analysis, various deposition patterns, including mountain-like, uniform and coffee ring, as well as un-/symmetrical multiring/mountain-like patterns are achieved. The ratio of nanoparticles deposited at droplet peripheries and center is proposed to quantify different patterns. Its value is controlled by the competition between the capillary flow and nanoparticle diffusion, leading to a linear dependence on an effective P\'eclet number, across over three orders of magnitude. Remarkably, the final deposition pattern can be predicted based on material properties only.
Keywords
Cite
@article{arxiv.2301.10918,
title = {Universal scaling of nanoparticle deposition by colloidal droplet drying},
author = {Feifei Qin and Linlin Fei and Jianlin Zhao and Qinjun Kang and Sauro Succi and Dominique Derome and Jan Carmeliet},
journal= {arXiv preprint arXiv:2301.10918},
year = {2023}
}