Photoacoustic correlation technique for low-speed flow measurement

Sung Liang Chen, Tao Ling, Sheng Wen Huang, Hyoung Won Baac, Yu-Chung Chang, L. Jay Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

A photoacoustic correlation spectroscopy (PACS) technique was proposed for the first time. This technique is inspired by its optical counterpart-the fluorescence correlation spectroscopy (FCS), which is widely used in the characterization of the dynamics of fluorescent species. The fluorescence intensity is measured in FCS while the acoustic signals are detected in PACS. To proof of concept, we demonstrated the flow measurement of light-absorbing beads probed by a pulsed laser. A PACS system with temporal resolution of 0.8 sec was built. Polymer microring resonators were used to detect the photoacoustic signals, which were then signal processed and used to obtain the autocorrelation curves. Flow speeds ranging from 249 to 15.1 μm/s with corresponding flow time from 4.42 to 72.5 sec were measured. The capability of low-speed flow measurement can potentially be used for detecting blood flow in relatively deep capillaries in biological tissues. Moreover, similar to FCS, PACS may have many potential applications in studying the dynamics of photoacoustic beads.

Original languageEnglish
Title of host publicationPhotons Plus Ultrasound
Subtitle of host publicationImaging and Sensing 2010
Volume7564
DOIs
Publication statusPublished - 2010 May 3
EventPhotons Plus Ultrasound: Imaging and Sensing 2010 - San Francisco, CA, United States
Duration: 2010 Jan 242010 Jan 26

Other

OtherPhotons Plus Ultrasound: Imaging and Sensing 2010
CountryUnited States
CitySan Francisco, CA
Period10-01-2410-01-26

Fingerprint

Photoacoustic Techniques
Photoacoustic effect
flow measurement
Flow measurement
low speed
Fluorescence Spectrometry
Spectrum Analysis
Spectroscopy
Fluorescence
spectroscopy
fluorescence
beads
Acoustics
Photoacoustic spectroscopy
Polymers
Lasers
photoacoustic spectroscopy
Pulsed lasers
Autocorrelation
Light

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Radiology Nuclear Medicine and imaging

Cite this

Chen, S. L., Ling, T., Huang, S. W., Baac, H. W., Chang, Y-C., & Guo, L. J. (2010). Photoacoustic correlation technique for low-speed flow measurement. In Photons Plus Ultrasound: Imaging and Sensing 2010 (Vol. 7564). [75642I] https://doi.org/10.1117/12.840123
Chen, Sung Liang ; Ling, Tao ; Huang, Sheng Wen ; Baac, Hyoung Won ; Chang, Yu-Chung ; Guo, L. Jay. / Photoacoustic correlation technique for low-speed flow measurement. Photons Plus Ultrasound: Imaging and Sensing 2010. Vol. 7564 2010.
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Chen, SL, Ling, T, Huang, SW, Baac, HW, Chang, Y-C & Guo, LJ 2010, Photoacoustic correlation technique for low-speed flow measurement. in Photons Plus Ultrasound: Imaging and Sensing 2010. vol. 7564, 75642I, Photons Plus Ultrasound: Imaging and Sensing 2010, San Francisco, CA, United States, 10-01-24. https://doi.org/10.1117/12.840123

Photoacoustic correlation technique for low-speed flow measurement. / Chen, Sung Liang; Ling, Tao; Huang, Sheng Wen; Baac, Hyoung Won; Chang, Yu-Chung; Guo, L. Jay.

Photons Plus Ultrasound: Imaging and Sensing 2010. Vol. 7564 2010. 75642I.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Chen SL, Ling T, Huang SW, Baac HW, Chang Y-C, Guo LJ. Photoacoustic correlation technique for low-speed flow measurement. In Photons Plus Ultrasound: Imaging and Sensing 2010. Vol. 7564. 2010. 75642I https://doi.org/10.1117/12.840123