Evaporation of Inclined Drops: Formation of Asymmetric Ring Patterns
| Autor: | Maheshwar Gopu, Uma Namangalam, Ravi Kumar Pujala, Dileep Mampallil, Sunil Kumar, Sachin Rathod |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Capillary action Drop (liquid) Suspended particles Pattern formation 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Particle transport 0104 chemical sciences Physics::Fluid Dynamics Colloid Chemical physics Electrochemistry General Materials Science 0210 nano-technology Spectroscopy Particle deposition |
| Zdroj: | Langmuir. 36:8137-8143 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | Evaporation of colloidal drops on horizontal surfaces deposits the contained particles at the drop-edge producing radially symmetric ring-like stains. The symmetry in the particle deposition is broken when the drop is placed on a tilted surface due to the influence of gravity on the suspended particles and the drop itself. Using extremely small drops generated by electrospray, we explore cases where different mechanisms of particle transport dominate. We show that the asymmetric residues are formed as the gravity-induced effects compete with the capillary flow. Our results give a broad insight into the pattern formation of evaporating inclined drops. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|