Dewetting versus Rayleigh instability inside capillaries

G. Callegari, A. Calvo, J. P. Hulin, F. Brochard-Wyart

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23 Scopus citations

Abstract

We study the dewetting of liquid films deposited inside nonwettable and wettable capillaries. Two processes compete: (i) Rayleigh instability (i.e., amplification of thickness fluctuations) and (ii) dewetting by nucleation and growth of a dry zone limited by a rim collecting the liquid. At times shorter than the characteristic time τM of the growth of the Rayleigh instability, we expect two regimes: (i) annular rims and drying at constant velocities and (ii) columnar rims with drying velocities decreasing versus time. For wettable capillaries, in a certain regime of thin thicknesses, the Rayleigh instability is absent and dewetting is the only process to remove the film.

Original languageEnglish (US)
Pages (from-to)4795-4798
Number of pages4
JournalLangmuir
Volume18
Issue number12
DOIs
StatePublished - Jun 11 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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