TY - GEN
T1 - Dynamic rupture of water in microfluidics
AU - Ando, K.
AU - Liu, A. Q.
AU - Ohl, C. D.
PY - 2011/12/1
Y1 - 2011/12/1
N2 - 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.
AB - 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.
KW - Euler flow simulation
KW - Homogeneous bubble nucleation
KW - Shock-interface interaction
UR - http://www.scopus.com/inward/record.url?scp=84883812912&partnerID=8YFLogxK
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M3 - Conference contribution
AN - SCOPUS:84883812912
SN - 9781618395955
T3 - 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
SP - 221
EP - 223
BT - 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
T2 - 15th International Conference on Miniaturized Systems for Chemistry and Life Sciences 2011, MicroTAS 2011
Y2 - 2 October 2011 through 6 October 2011
ER -