Velocity measurements in microchannels with a laser scanning microscope and particle linear image velocimetry

S. H. Chao, M. R. Holl, J. H. Koschwanez, R. H. Carlson, Ling-Sheng Jang, D. R. Meldrum

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

Abstract

A novel velocity measurement method for microscale flow field characterization is reported, particle linear image velocimetry (PLIV). The method records a series of one-dimensional images that represent the trace of particles in the flow across a one-dimensional imager. Linear imaging results in a faster frame rate than planar imaging, allowing observation of larger microscope magnification or measurement of faster flow rates in real-time than comparable techniques. In contrast to particle image velocimetry (PIV), PLIV does not require high-speed cameras or shutters. Furthermore, PLIV is adaptable to multiple linear imager formats and, as one example, can use laser scanning confocal microscopes (LSCM) that acquire images slowly but with high spatial resolutions and optical sectioning ability. Higher resolution can be obtained for flows where in-plane velocity gradient in the direction of the optical path (z-direction) is important. This paper presents the PLIV algorithm, and demonstrates its utility by measuring Poiseuille flow with 1-μm resolution in a microfluidic environment.

Original languageEnglish
Title of host publicationProceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004)
EditorsS.G. Kandlikar, G.P. Celata, S. Nishio, P. Stephan, B. Thonon
Pages925-930
Number of pages6
Publication statusPublished - 2004 Sep 29
EventProceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004) - Rochester, NY, United States
Duration: 2004 Jun 172004 Jun 19

Publication series

NameProceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004)

Other

OtherProceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004)
CountryUnited States
CityRochester, NY
Period04-06-1704-06-19

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Chao, S. H., Holl, M. R., Koschwanez, J. H., Carlson, R. H., Jang, L-S., & Meldrum, D. R. (2004). Velocity measurements in microchannels with a laser scanning microscope and particle linear image velocimetry. In S. G. Kandlikar, G. P. Celata, S. Nishio, P. Stephan, & B. Thonon (Eds.), Proceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004) (pp. 925-930). (Proceedings of the Second International Conference on Microchannels and Minichannels (ICMM2004)).