Abstract
In this paper, we present a theoretical discussion about colloidal particles transporting to a meniscus deposition region for the vertical evaporation-driven colloidal deposition by the coffee-ring theory. The vertically immersed substrate is gradually exposed with a low speed, and colloidal particles are deposited on the substrate as suspension surface descends. Due to a singular evaporation rate at the contact line, to keep a constant contact angle, a solvent flow toward the meniscus region is formed to replenish lost liquid. This solvent flow results in a particle flow to form a film on the substrate.
| Original language | English |
|---|---|
| Pages (from-to) | 167-170 |
| Number of pages | 4 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 338 |
| Issue number | 1-3 |
| DOIs | |
| State | Published - 15 Apr 2009 |
Keywords
- Coffee ring
- Colloidal particles
- Evaporation
- Film growth
- Self-assembly
- Vertical evaporation-driven colloidal deposition