title: Measurement of fluid-flow-velocity profile in turbid media by the use of optical Doppler tomography.
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.
authors.forename: X J
authors.initials: XJ
authors.lastname: Wang
authors.forename: T E
authors.initials: TE
authors.lastname: Milner
authors.forename: Z
authors.initials: Z
authors.lastname: Chen
authors.forename: J S
authors.initials: JS
authors.lastname: Nelson