Micron-resolution shear stress imaging

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this research, we have investigated flow-induced shear stress imaging with micron-resolution. The shear stress is characterized based on volumetric microfluidic velocimetry using an astigmatic microscopy. Since tracking of astigmatic images for tracer particles enables us to obtain their velocities in a measurement volume near the wall, shear stress distribution on the wall can be determined by accumulating the velocity data. As a verification of this concept, we measured shear stress distribution of a contracting flow in a microfluidic channel with spatial resolution of 5.8 μm and confirmed the validity comparing the results with simulation.

Original languageEnglish
Title of host publication20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
PublisherChemical and Biological Microsystems Society
Pages1396-1397
Number of pages2
ISBN (Electronic)9780979806490
Publication statusPublished - 1 Jan 2016
Event20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016 - Dublin, Ireland
Duration: 9 Oct 201613 Oct 2016

Publication series

Name20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016

Conference

Conference20th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2016
Country/TerritoryIreland
CityDublin
Period9/10/1613/10/16

Keywords

  • Astigmatism particle tracking velocimetry (APTV)
  • Microfluidics
  • Wall shear stress

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