Measurement of lateral adhesion forces at the interface between a liquid drop and a substrate

Rafael Tadmor, Prashant Bahadur, Aisha Leh, Hartmann E. N'Guessan, Rajiv Jaini, Lan Dang

Research output: Contribution to journalArticlepeer-review

194 Scopus citations

Abstract

A novel instrument allows for the first time measurements of the lateral adhesion forces at a solid-liquid interface, f□, in a way that is decoupled from the normal forces, f⊥. We use it to measure how f□ between a drop and a surface is influenced by different f⊥ and different histories of drop resting periods on the surface prior to sliding, trest. The variation of f□ with trest is similar for different f⊥ and always plateaus as trest→∞. We show that the f□ plateau value is higher when f⊥ is lower. This seemingly counterintuitive result is in agreement with recent theories.

Original languageEnglish
Article number266101
JournalPhysical Review Letters
Volume103
Issue number26
DOIs
StatePublished - 21 Dec 2009
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (all)

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