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Microscale 3D flow mapping with μDDPIV

Pereira, Francisco and Lu, Jian and Castaño-Graff, Emilio and Gharib, Morteza (2007) Microscale 3D flow mapping with μDDPIV. Experiments in Fluids, 42 (4). pp. 589-599. ISSN 0723-4864. doi:10.1007/s00348-007-0267-5.

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Three-dimensional (3D) quantitative flow visualization by tracking microscale particles has become an invaluable tool in microfluid mechanics. Defocusing digital particle image velocimetry (DDPIV) can recover spatial coordinates by calculating the separation between defocused images generated by an aperture mask with a plurality of pinholes. In this paper, a high-speed 3D micro-DDPIV (μDDPIV) system was devised based on this technique to achieve microscale velocity field measurements. A micro-volume of 400 × 300 μm^2 with a depth of 150 μm has been mapped using an inverted microscope equipped with a 20× objective lens. The proposed technique was successfully applied to 3D tracking of 2-μm fluorescent particles inside an evaporating water droplet.

Item Type:Article
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Gharib, Morteza0000-0002-2204-9302
Additional Information:© 2007 Springer-Verlag. Received: 27 March 2006; Revised: 3 December 2006; Accepted: 5 January 2007; Published online: 22 February 2007.
Subject Keywords:defocusing; DPIV; 3D; particle; tracking; microfluidics; microscale; microscope; fluorescence; droplet
Issue or Number:4
Record Number:CaltechAUTHORS:20130910-151618202
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Official Citation:Pereira, F., Lu, J., Castaño-Graff, E. et al. Exp Fluids (2007) 42: 589. doi:10.1007/s00348-007-0267-5
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41221
Deposited By: Tony Diaz
Deposited On:11 Sep 2013 21:47
Last Modified:10 Nov 2021 04:27

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