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Biomed Opt Express. 2020 Jan 24;11(2):1092-1106. doi: 10.1364/BOE.382819. eCollection 2020 Feb 1.

Optical coherence tomography for evaluating capillary waves in blood and plasma.

Author information

1
Department of Radiology, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.
2
Department of Robotics and Mechatronics, AGH University of Science and Technology, Al. Mickiewicza 30, Krakow 30-059, Poland.
3
Department of Physiology and Biomedical Engineering, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA.

Abstract

Capillary waves are associated with fluid mechanical properties. Optical coherence tomography (OCT) has previously been used to determine the viscoelasticity of soft tissues or cornea. Here we report that OCT was able to evaluate phase velocities of capillary waves in fluids. The capillary waves of water, porcine whole blood and plasma on the interfacial surface, air-fluid in this case, are discussed in theory, and phase velocities of capillary waves were estimated by both our OCT experiments and theoretical calculations. Our experiments revealed highly comparable results with theoretical calculations. We concluded that OCT would be a promising tool to evaluate phase velocities of capillary waves in fluids. The methods described in this study could be applied to determine surface tensions and viscosities of fluids for differentiating hematological diseases in the future potential biological applications.

Conflict of interest statement

The authors declare that there are no conflicts of interest related to this article.

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