1. Microfluidic volumetric flow determination using optical coherence tomography speckle: An autocorrelation approach

    Microfluidic volumetric flow determination using optical coherence tomography speckle: An autocorrelation approach

    Functional modalities of Optical Coherence Tomography (OCT) based on speckle analysis are emerging in the literature. We propose a simple approach to the autocorrelation of OCT signal to enable volumetric flow rate differentiation, based on decorrelation time. Our results show that this technique could distinguish flows separated by 3  μ l/min, limited by the acquisition speed of the system. We further perform a B-scan of gradient flow inside a microchannel, enabling the visualization of the drag effect on the walls.

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