Homogeneous nucleation in water in microfluidic channels

Keita Ando, Ai Qun Liu, Claus Dieter Ohl

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42 Citations (Scopus)

Abstract

It has been an experimental challenge to test the rupture of liquids with homogeneous nucleation of vapor bubbles. Many prior studies suffered from the ubiquitous presence of impurities in liquids or at container surfaces that spontaneously nucleate and grow under tension. Here, we propose a microfluidic approach to eliminate such impurities and obtain homogeneous bubble nucleation. We stretch the liquid dynamically via the interaction between a laser-induced shock and an air-liquid interface in a microchannel. Reproducible observations of the nucleation of vapor bubbles are obtained, supporting our claim of homogeneous nucleation. From comparisons of the distribution of vapor cavities with Euler flow simulations, the nucleation threshold for water at room temperature is predicted to be -60MPa.

Original languageEnglish
Article number044501
JournalPhysical review letters
Volume109
Issue number4
DOIs
Publication statusPublished - 2012 Jul 24

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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