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Proceedings Paper

Single frame holographic particle image velocimetry
Author(s): Lisa Dixon; Fook Chiong Cheong; David G. Grier
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Paper Abstract

We present a novel method for single frame particle image velocimetry of micron scale spheres based on holographic video microscopy. Our approach takes advantage of the blurring that recorded holograms suffer when a sphere moves during the exposure period of the camera. By measuring the angular variance in intensity of the blurred hologram, we extract a modelindependent metric for the particle velocity. We find this to be accurate for speeds that permit characterization of other properties of the sphere, such as radius and refractive index through Lorenz-Mie mocroscopy. Singl-frame holographic velocimetry yields information on the dynamics of a particle, without sacrificing any other measurements.

Paper Details

Date Published: 10 February 2010
PDF: 7 pages
Proc. SPIE 7619, Practical Holography XXIV: Materials and Applications, 761904 (10 February 2010); doi: 10.1117/12.840534
Show Author Affiliations
Lisa Dixon, New York Univ. (United States)
Fook Chiong Cheong, New York Univ. (United States)
David G. Grier, New York Univ. (United States)

Published in SPIE Proceedings Vol. 7619:
Practical Holography XXIV: Materials and Applications
Hans I. Bjelkhagen; Raymond K. Kostuk, Editor(s)

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