Microfluidic fabrication and micromechanics of permeable and impermeable elastomeric microbubbles

Wynter J. Duncanson, Thomas E. Kodger, Sahab Babaee, Grant Gonzalez, David A. Weitz, Katia Bertoldi

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

We use droplet microfluidics to produce monodisperse elastomeric microbubbles consisting of gas encapsulated in a polydimethylsiloxane shell. These microbubbles withstand large, repeated deformations without rupture. We perform μN-scale compression tests on individual microbubbles and find their response to be highly dependent on the shell permeability; during deformation, the pressure inside impermeable microbubbles increases, resulting in an exponential increase in the applied force. Finite element models are used to interpret and extend these experimental results enabling the design and development of deformable microbubbles with a predictable mechanical response. Such microbubbles can be designed to repeatedly transit through the narrow constrictions found in a porous medium functioning as probes of the local pressure.

Original languageEnglish
Pages (from-to)3489-3493
Number of pages5
JournalLangmuir
Volume31
Issue number11
DOIs
Publication statusPublished - Mar 24 2015

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ASJC Scopus subject areas

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

Cite this

Duncanson, W. J., Kodger, T. E., Babaee, S., Gonzalez, G., Weitz, D. A., & Bertoldi, K. (2015). Microfluidic fabrication and micromechanics of permeable and impermeable elastomeric microbubbles. Langmuir, 31(11), 3489-3493. https://doi.org/10.1021/la504843p