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. 1997 Jan 1;36(1):144-9.
doi: 10.1364/ao.36.000144.

Measurement of fluid-flow-velocity profile in turbid media by the use of optical Doppler tomography

X J Wang, T E Milner, Z Chen, J S Nelson
Free article

Measurement of fluid-flow-velocity profile in turbid media by the use of optical Doppler tomography

X J Wang et al. Appl Opt. .
Free article

Abstract

Optical Doppler tomography is demonstrated to be a simple, accurate, and noncontact method for measuring the fluid velocity of laminar flow in small-diameter (~0.5-mm) ducts. Studies are described that utilize circular (square) plastic (glass) ducts infused with a moving suspension of polymer microspheres in air and buried in an optically turbid medium. The measurement of Doppler-shifted frequencies of backscattered light from moving microspheres is used to construct a high-resolution spatial profile of fluid-flow velocity in the ducts.

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