Transverse flow imaging based on photoacoustic Doppler bandwidth broadening.
Journal Article (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
- PMC2857455
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