A soft microchannel decreases polydispersity of droplet generation

Yan Pang, Hyoungsoo Kim, Zhaomiao Liu, Howard A. Stone

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


We study the effect of softness of the microchannel on the process of droplet generation in two-phase flows in a T-junction microchannel. One side of the microchannel has a flexible thin PDMS layer, which vibrates naturally while droplets are generated; the deformation frequency coincides with the frequency of droplet formation. Furthermore, we compare the polydispersity of water-in-oil droplets formed with a microchannel with one soft wall with those formed in a conventional rigid microchannel. We show that deformation of the soft wall reduces the polydispersity in the droplet size.

Original languageEnglish (US)
Pages (from-to)4029-4034
Number of pages6
JournalLab on a Chip
Issue number20
StatePublished - Oct 21 2014

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Bioengineering
  • Biochemistry
  • Biomedical Engineering


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