Dynamic rupture of water in microfluidics

K. Ando, A. Q. Liu, C. D. Ohl

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An experimental technique is developed to measure the rupture strength of water in a microfluidic channel. A transparent channel is filled with distilled water, partially leaving an air-water interface. An infrared laser pulse is focused within the liquid to create a spherical shock wave near the interface. The shock reflects, due to acoustic impedance mismatch, as a tension wave. The liquid becomes stretched and at the critical tension ruptures with the nucleation of vapor bubbles. The bubble nucleation is captured using a CCD camera with an optical delay and short exposure times. Reproducible observations of the bubble nucleation are obtained, confirming the realization of homogeneous nucleation. Euler flow simulation estimates a tensile stress threshold of -60 MPa, which is the largest reported tension among dynamic measurements.

Original languageEnglish
Title of host publication15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Pages221-223
Number of pages3
Publication statusPublished - 2011 Dec 1
Externally publishedYes
Event15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011 - Seattle, WA, United States
Duration: 2011 Oct 22011 Oct 6

Publication series

Name15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Volume1

Other

Other15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
CountryUnited States
CitySeattle, WA
Period11/10/211/10/6

Keywords

  • Euler flow simulation
  • Homogeneous bubble nucleation
  • Shock-interface interaction

ASJC Scopus subject areas

  • Control and Systems Engineering

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