2D spatially-resolved depth-section microfluidic flow velocimetry using dual beam OCT

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dc.contributor.author Hallam, Jonathan M.
dc.contributor.author Rigas, Evangelos
dc.contributor.author Charrett, Thomas O. H.
dc.contributor.author Tatam, Ralph P.
dc.date.accessioned 2020-04-09T15:14:31Z
dc.date.available 2020-04-09T15:14:31Z
dc.date.issued 2020-03-27
dc.identifier.citation Hallam JM, Rigas E, Charrett TO & Tatam RP (2020) 2D spatially-resolved depth-section microfluidic flow velocimetry using dual beam OCT. Micromachines, Volume 11, Issue 4, 2020, Article number 351 en_UK
dc.identifier.issn 2072-666X
dc.identifier.uri https://doi.org/10.3390/mi11040351
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/15391
dc.description.abstract A dual beam optical coherence tomography (OCT) instrument has been developed for flow measurement that offers advantages over microscope derived imaging techniques. It requires only a single optical access port, allows simultaneous imaging of the microfluidic channel, does not require fluorescent seed particles, and can provide a millimetre-deep depth-section velocity profile (as opposed to horizontal-section). The dual beam instrument performs rapid re-sampling of particle positions, allowing measurement of faster flows. In this paper, we develop the methods and processes necessary to make 2D quantitative measurements of the flow-velocity using dual beam OCT and present exemplar results in a microfluidic chip. A 2D reference measurement of the Poiseuille flow in a microfluidic channel is presented over a spanwise depth range of 700 μm and streamwise length of 1600 μm with a spatial resolution of 10 μm, at velocities up to 50 mm/s. A measurement of a more complex flow field is also demonstrated in a sloped microfluidic section. en_UK
dc.language.iso en en_UK
dc.publisher MDPI en_UK
dc.rights Attribution 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by/4.0/ *
dc.subject particle image velocimetry (PIV) en_UK
dc.subject flow measurement en_UK
dc.subject microfluidics en_UK
dc.subject interferometry en_UK
dc.subject optical coherence tomography (OCT) en_UK
dc.title 2D spatially-resolved depth-section microfluidic flow velocimetry using dual beam OCT en_UK
dc.type Article en_UK
dc.identifier.cris 26703844
dc.date.freetoread 2020-04-09

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