Velocimetry for MEMS applications

Steven T. Wereley, Carl D. Meinhart, Juan G. Santiago, Ronald Adrian

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

25 Scopus citations

Abstract

Particle image velocimetry (PIV), a technique commonly used at macroscopic length scales to measure velocity fields of particle-seeded flows, is adapted to measure velocity fields in microfluidic MEMS devices, where micron-scale spatial resolution is critical. Adapting PIV to the microscopic level presents a number of challenges, including visualizing tracer particles that are smaller than the wavelength of light and minimizing errors due to the Brownian motion of the tracer particles. High numerical aperture video microscopy is used to record the faint signals from fluorescent 300 nm particles. Innovative ensemble averaging and adaptive spatial shifting algorithms are used to extract maximal information from the recorded images. The PIV technique is used to measure a low Reynolds number Hele-Shaw flow around an 8 μm human red blood cell. The velocity vector field presented has a maximal spatial resolution of 3.2×3.2×1.5 μm.

Original languageEnglish (US)
Title of host publicationAmerican Society of Mechanical Engineers, Dynamic Systems and Control Division (Publication) DSC
EditorsR.J. Furness
Place of PublicationFairfield, NJ, United States
PublisherASME
Pages453-459
Number of pages7
Volume66
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1998 ASME International Mechanical Engineering Congress and Exposition - Anaheim, CA, USA
Duration: Nov 15 1998Nov 20 1998

Other

OtherProceedings of the 1998 ASME International Mechanical Engineering Congress and Exposition
CityAnaheim, CA, USA
Period11/15/9811/20/98

ASJC Scopus subject areas

  • Software
  • Mechanical Engineering

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