Shape of the liquid-liquid interface in micro counter-current flows

Arata Aota, Akihide Hibara, Yasuhiko Sugii, Takehiko Kitamori

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

We investigated the shape of the liquid-liquid interface in micro counter-current flows formed within microchannels. The pressure balance at the interface was calculated based on the interface geometry. Although the shape should be an arc under laminar flow, a large deformation near the center of the microchannel was observed. In the center of the microchannel, Laplace pressure (171 - 450 Pa) was induced toward the aqueous phase. In contrast, near both sidewalls, Laplace pressure (81 - 166 Pa) was induced toward the organic phase. This result suggests that opposing flow occurs in the adjacent phases near the interface, with spiral-like flow generation.

Original languageEnglish
Pages (from-to)9-12
Number of pages4
Journalanalytical sciences
Volume28
Issue number1
DOIs
Publication statusPublished - 2012
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry

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