# Three-dimensional microscopic light field particle image velocimetry

Three-dimensional microscopic light field particle image velocimetry A microscopic particle image velocimetry ( $$\mu \text {PIV}$$ μ PIV ) 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 $$\mu$$ μ PIV 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Experiments in Fluids Springer Journals

# Three-dimensional microscopic light field particle image velocimetry

, Volume 58 (3) – Feb 11, 2017
14 pages

/lp/springer_journal/three-dimensional-microscopic-light-field-particle-image-velocimetry-zq00WHcVxT
Publisher
Springer Berlin Heidelberg
Subject
Engineering; Engineering Fluid Dynamics; Fluid- and Aerodynamics; Engineering Thermodynamics, Heat and Mass Transfer
ISSN
0723-4864
eISSN
1432-1114
D.O.I.
10.1007/s00348-016-2297-3
Publisher site
See Article on Publisher Site

### Abstract

A microscopic particle image velocimetry ( $$\mu \text {PIV}$$ μ PIV ) 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 $$\mu$$ μ PIV 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.

### Journal

Experiments in FluidsSpringer Journals

Published: Feb 11, 2017

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