Spreading dynamics and contact angle of completely wetting volatile drops

Etienne Jambon-Puillet*, Odile Carrier, Noushine Shahidzadeh, David Brutin, Jens Eggers, Daniel Bonn

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

12 Citations (Scopus)

Abstract

The spreading of evaporating drops without a pinned contact line is studied experimentally and theoretically, measuring the radius R(t) of completely wetting alkane drops of different volatility on glass. Initially the drop spreads (R increases), then owing to evaporation reverses direction and recedes with an almost constant non-zero contact angle θ ∞ β1/3, where β measures the rate of evaporation; eventually the drop vanishes at a finite-time singularity. Our theory, based on a first-principles hydrodynamic description, well reproduces the dynamics of R and the value of θ during retraction.

Original languageEnglish
Pages (from-to)817-830
Number of pages14
JournalJournal of Fluid Mechanics
Volume844
Early online date12 Apr 2018
DOIs
Publication statusPublished - 10 Jun 2018

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