Transverse flow imaging based on photoacoustic Doppler bandwidth broadening.

Published

Journal Article

We propose a new method to measure transverse flow velocity based on photoacoustic Doppler bandwidth broadening, which is determined by the geometry of the probe-beam and the velocity of the transverse flow. By exploiting pulsed laser excitation and raster motor scanning, three-dimensional structure and flow velocity can be imaged simultaneously. In addition, the flow direction can be determined with bidirectional scanning. In a flowing suspension of red-dyed microspheres (diameter: 6 microm), transverse flow speeds ranging from 0 to 2.5 mms as well as flow direction were measured. A cross-sectional flow image was also obtained with the tube laid in a zigzag pattern.

Full Text

Duke Authors

Cited Authors

  • Yao, J; Wang, LV

Published Date

  • March 2010

Published In

Volume / Issue

  • 15 / 2

Start / End Page

  • 021304 -

PubMed ID

  • 20459226

Pubmed Central ID

  • 20459226

Electronic International Standard Serial Number (EISSN)

  • 1560-2281

International Standard Serial Number (ISSN)

  • 1083-3668

Digital Object Identifier (DOI)

  • 10.1117/1.3339953

Language

  • eng