Shee-Ann Leung et al 2004 Meas. Sci. Technol. 15 290 doi:10.1088/0957-0233/15/1/042
Shee-Ann Leung, Joshua B Edel, Robert C R Wootton and Andrew J deMello
Show affiliationsA novel approach to the monitoring and analysis of bubbles in gas/liquid binary systems is described. The method is based on the varying extent of refraction experienced by radiation as it passes through a gas or liquid. Specifically, carbonated liquids are hydrodynamically motivated through a microfluidic channel network (40 µm wide and 30 µm deep) and directed through the path of laser beam. As a gas bubble passes through this region, the reduction in local refractive index leads to an increased displacement of the laser beam which is monitored using a position-sensitive detector. Statistical analysis of multiple bubble events (in terms of autocorrelation curves, burst width distributions and interburst time curves) yields information relating to both the bubble size and the frequency of bubble formation.
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
47.85.Dh Hydrodynamics, hydraulics, hydrostatics
07.60.Hv Refractometers and reflectometers
06.30.Bp Spatial dimensions (e.g., position, lengths, volume, angles, and displacements)
Issue 1 (January 2004)
Received 20 August 2003, accepted for publication 12 November 2003, in final form 29 October 2003
Published 28 November 2003
Shee-Ann Leung et al 2004 Meas. Sci. Technol. 15 290
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