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15 November 2018 Frequency-resolved photoacoustic viscosity measurement
Yue Zhao, Liwei Liu, Junle Qu
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Proceedings Volume 10964, Tenth International Conference on Information Optics and Photonics; 109646B (2018) https://doi.org/10.1117/12.2506515
Event: Tenth International Conference on Information Optics and Photonics (CIOP 2018), 2018, Beijing, China
Abstract
In this paper, we proposed a photoacoustic (PA) method for detecting liquid viscosity based on frequency-resolved measurement. A negative correlation was investigated theoretically between the liquid viscosity and the full width at half maximum (FWHM) of the PA frequency spectrum. To test the feasibility of this method, water mixed with different concentrations of ink and glycerol was measured. The results indicate that liquids with higher viscosity will lead to a higher FWHM reduction in the PA frequency spectrum and the frequency spectrum was independent from the absorption coefficient of the liquid, which demonstrate that this technique has future potential clinical applications for monitoring the viscosity changes in subcutaneous microvasculature.
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Yue Zhao, Liwei Liu, and Junle Qu "Frequency-resolved photoacoustic viscosity measurement", Proc. SPIE 10964, Tenth International Conference on Information Optics and Photonics, 109646B (15 November 2018); https://doi.org/10.1117/12.2506515
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KEYWORDS
Liquids
Biomedical optics
Transducers
Wave propagation
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