Sub-diffusion flow velocimetry with number fluctuation optical coherence tomography

Conference paper (2023)

Authors

K. Cheishvili ImPhys/Kalkman group - AS
Jeroen Kalkman ImPhys/Computational Imaging - AS , ImPhys/Kalkman group - AS
Research Group
ImPhys/Kalkman group (AS) (TU Delft)
Copyright: © 2023 K. Cheishvili, J. Kalkman
DOI: https://doi.org/10.1117/12.2648417
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Published Date

2023

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

ImPhys/Imaging Physics

Research Group

ImPhys/Kalkman group

Abstract

We show number fluctuations dynamic light scattering optical coherence tomography (OCT) for measuring extremely slow, sub-diffusion flows of dilute particle suspensions. Our method removes the minimum measurable velocity limitation of conventional correlation-based or phase-resolved Doppler OCT, set by flowing particles’ Brownian motion. Our technique works for any Doppler angle, is applicable to 2D flow imaging with scanning OCT systems and can be used to determine concentration of particles under flow.

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