Contact Force Mediated Rapid Deposition of Colloidal Microspheres Flowing Over Microstructured Barriers
| Autor: | Praneet Prakash, Manoj M. Varma, Amith Z. Abdulla |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Microfluidics
FOS: Physical sciences 02 engineering and technology Surfaces and Interfaces Surface finish Condensed Matter - Soft Condensed Matter 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Electrostatics 01 natural sciences 0104 chemical sciences Contact force Colloid Chemical engineering Electrochemistry DLVO theory Deposition (phase transition) Soft Condensed Matter (cond-mat.soft) General Materials Science 0210 nano-technology Spectroscopy Body orifice |
| DOI: | 10.48550/arxiv.2112.04032 |
| Popis: | Deposition of particles while flowing past constrictions is a ubiquitous phenomenon observed in diverse systems. Some common examples are jamming of salt crystals near the orifice of salt shakers, clogging of filter systems, gridlock in vehicular traffic, etc. Our work investigates the deposition events of colloidal microspheres flowing over microstructured barriers in microfluidic devices. The interplay of DLVO, contact, and hydrodynamic forces in facilitating rapid deposition of microspheres is discussed. Noticeably, a decrease in the electrostatic repulsion among microspheres leads to linear chain formations, whereas an increase in roughness results in rapid deposition. © |
| Databáze: | OpenAIRE |
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