Dynamic Effects on the Mobilization of a Deposited Nanoparticle by a Moving Liquid-Liquid Interface

Tianya Yin, Donglee Shin, Joelle Frechette, Carlos E. Colosqui, German Drazer

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

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.

Original languageEnglish (US)
Article number238002
JournalPhysical review letters
Volume121
Issue number23
DOIs
StatePublished - Dec 7 2018

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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