Three-dimensional microscopic light field particle image velocimetry

Tadd T. Truscott, Jesse Belden, Rui Ni, Jonathon Pendlebury, Bryce McEwen

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


A microscopic particle image velocimetry (μPIV) technique is developed based on light field microscopy and is applied to flow through a microchannel containing a backward-facing step. The only hardware difference from a conventional μPIV setup is the placement of a microlens array at the intermediate image plane of the microscope. The method combines this optical hardware alteration with post-capture computation to enable 3D reconstruction of particle fields. From these particle fields, we measure three-component velocity fields, but find that accurate velocity measurements are limited to the two in-plane components at discrete depths through the volume (i.e., 2C-3D). Results are compared with a computational fluid dynamics simulation.

Original languageEnglish (US)
Article number16
JournalExperiments in Fluids
Issue number3
StatePublished - Mar 1 2017

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • General Physics and Astronomy
  • Fluid Flow and Transfer Processes


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