Capillary wave phenomena are challenging to study, especially for microfluidics where the wavelengths are short, the frequencies are high, and the frequency distribution is rarely confined to a narrow range, let alone a single frequency. Those that have been studying Faraday capillary waves generated by vertical oscillation have chosen to work at larger scales and at low frequencies as a solution to this problem, trading simplicity in measurement for issues with gravity, boundary conditions, and the fidelity of the subharmonic capillary wave motion. Laser Doppler vibrometry using a Mach–Zehnder interferometer is an attractive alternative: The interface’s motion can be characterized at frequencies up to 40 MHz and displacements of as little as a few tens of picometers.
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June 2010
Research Article|
March 15 2010
Using laser Doppler vibrometry to measure capillary surface waves on fluid-fluid interfaces
James Friend;
James Friend
a)
Department of Mechanical and Aerospace Engineering, MicroNanophysics Research Laboratory,
Monash University
, Melbourne VIC 3800, Australia
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Leslie Yeo
Leslie Yeo
Department of Mechanical and Aerospace Engineering, MicroNanophysics Research Laboratory,
Monash University
, Melbourne VIC 3800, Australia
Search for other works by this author on:
James Friend
a)
Leslie Yeo
Department of Mechanical and Aerospace Engineering, MicroNanophysics Research Laboratory,
Monash University
, Melbourne VIC 3800, Australia
a)
Author to whom correspondence should be addressed. URL: http://mnrl.monash.edu. Electronic mail: [email protected].
Biomicrofluidics 4, 026501 (2010)
Article history
Received:
September 13 2009
Accepted:
February 10 2010
Connected Content
A related article has been published:
Announcement: Fabrication and Laboratory Methods Section
Citation
James Friend, Leslie Yeo; Using laser Doppler vibrometry to measure capillary surface waves on fluid-fluid interfaces. Biomicrofluidics 1 June 2010; 4 (2): 026501. https://doi.org/10.1063/1.3353329
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