0

Full Content is available to subscribers

Subscribe/Learn More  >

Complete Micro-PIV Characterisation of Microfluidic Devices

[+] Author Affiliations
Mark R. Bown, Jordan M. MacInnes, Ray W. K. Allen

University of Sheffield, Sheffield, UK

Paper No. ICMM2005-75041, pp. 385-390; 6 pages
doi:10.1115/ICMM2005-75041
From:
  • ASME 3rd International Conference on Microchannels and Minichannels
  • ASME 3rd International Conference on Microchannels and Minichannels, Part B cont’d
  • Toronto, Ontario, Canada, June 13–15, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4185-5 | eISBN: 0-7918-3758-0
  • Copyright © 2005 by ASME

abstract

Microfluidic devices can take advantage of novel physics only available at the micro-scale. As a result, new physical models for the flow behaviour within these devices are required. In recent years micron resolution particle image velocimetry (Micro-PIV) has established itself as a reliable verification tool for these models. Micro-PIV measures the velocity profile across a single 2D plane within a microfluidic device. Here, Micro-PIV data is obtained from several planes within a device to create a complete mapping of the flow field. Combination of the data from all the planes allows the flow profile on the plane perpendicular to the original images to be studied and the volumetric flowrate through the device to be measured. By fitting the measured velocities to known flow profiles, the width and depth of the device can also be measured with sub micron precision. The technique is applied to an isotropically etched microchannel, where the results are compared to an independent computational fluid dynamics solution. Good agreement is found between the two data sets. The technique is then demonstrated in a more complex flow in a mixing channel device. In order to image an entire device a large field of view may be required. This dictates the use of low magnification lenses, which in turn have a large depth of field. A theoretical model for the measured Micro-PIV velocity demonstrates that, if care is taken when measuring near to curved walls, the use of these low magnification lenses does not significantly reduce the quality of the data obtained.

Copyright © 2005 by ASME
Topics: Microfluidics

Figures

Tables

Interactive Graphics

Video

Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In