69th Annual Meeting of the APS Division of Fluid Dynamics (November 20, 2016 — November 22, 2016)

V0074: In situ Microfabrication of valves with Flow Analysis

Authors

• Zoe Schofield, University of Birmingham (UK), EPSRC Centre for Physical Sciences for Health
• Daniele Vigolo, University of Birmingham (UK), School of Chemical Engineering

DOI: https://doi.org/10.1103/APS.DFD.2016.GFM.V0074

In our video we show how it is possible to fabricate a flexible valve in-situ within a microfluidic channel. We used PEG diacrylate which we polymerised by UV irradiation through a photomask to obtain the desired shape. Then, we performed a full velocimetry study by flowing a 0.2% aqueous solution of 200 nm polystyrene particles. Taking advantage of the Ghost Particle Velocimetry technique, we obtained the speckle pattern via white light illumination and we analysed the flow field via cross correlation. Finally, we obtained the full flow field of the pulsed flow across the flexible valve.