Dynamic Effects on the Mobilization of a Deposited Nanoparticle by a Moving Liquid-Liquid Interface
| Autor: | German Drazer, Donglee Shin, Tianya Yin, Carlos E. Colosqui, Joelle Frechette |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Work (thermodynamics)
Materials science Interface (computing) General Physics and Astronomy Nanoparticle 02 engineering and technology Mechanics 010501 environmental sciences 021001 nanoscience & nanotechnology Critical value 01 natural sciences Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Contact angle Molecular dynamics 13. Climate action Particle Wetting 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | Physical review letters. 121(23) |
| ISSN: | 1079-7114 |
| Popis: | Using molecular dynamics simulations, we investigate the fate of a nanoparticle deposited on a solid surface as a liquid-liquid interface moves past it, depending on the wetting of the solid by the two liquids and the magnitude of the driving force. Interfacial pinning is observed below a critical value of the driving force. Above the critical driving force for pinning and for large contact angle values we observe stick-slip motion, with intermittent interfacial pinning and particle sliding at the interface. At low contact angles we observe that particle rolling precedes detachment, which indicates the importance of dynamic effects not present in static models. The findings in this work indicate that particle mobilization, and removal efficiencies, originating in dynamic liquid-liquid interfaces can be significantly underestimated by static models. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|