Interfacial polygonal nanopatterning of stable microbubbles

Emilie Dressaire, Rodney Bee, David C. Bell, Alex Lips, Howard A. Stone

Research output: Contribution to journalArticle

94 Scopus citations

Abstract

Micrometer-sized bubbles are unstable and therefore difficult to make and store for substantial lengths of time. Short-term stabilization is achieved by the addition of amphiphilic molecules, which reduce the driving force for dissolution. When these molecules crystallize on the air/liquid interface, the lifetime of individual bubbles may extend over a few months. We demonstrated low gas-fraction dispersions with mean bubble radii of less than 1 micrometer and stability lasting more than a year. An insoluble, self-assembled surfactant layer covers the surface of the microbubbles, which can result in nanometer-scale hexagonal patterning that we explain with thermodynamic and molecular models. The elastic response of the interface arrests the shrinkage of the bubbles. Our study identifies a route to fabricate highly stable dispersions of microbubbles.

Original languageEnglish (US)
Pages (from-to)1198-1201
Number of pages4
JournalScience
Volume320
Issue number5880
DOIs
StatePublished - May 30 2008

All Science Journal Classification (ASJC) codes

  • General

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