Liquid slip in nanoscale channels as a rate process

Seth H Lichter*, Ashlie Martini, Randall Q Snurr, Q Jane Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

Liquids flowing through nanoscale channels can slip; that is, there is a discontinuity in the mean speed between the walls and the first layer of liquid molecules. The mechanisms of slip are unclear. Using numerical simulation, we find an exponential dependence of slip on solvation pressure which can be explained by treating slip as a rate process. Predictions for the temperature and viscosity dependencies of slip agree with published data. Our findings are consistent with a description of slip as due to the propagation of molecular-size vacancies along the solid-liquid interface.

Original languageEnglish (US)
Article number226001
JournalPhysical Review Letters
Volume98
Issue number22
DOIs
StatePublished - May 30 2007

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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