2026-04-17T20:01:01Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1737202026-04-15T19:10:17Zcom_2072_1057col_2072_478812col_2072_478822col_2072_478917

00925njm 22002777a 4500 dc Rodríguez Trujillo, Romén author Kim-Im, Yu-Han author Hernández Machado, Aurora author 2021-02-08T12:15:01Z 2021-02-08T12:15:01Z 2020-01-13 2021-02-08T12:15:01Z A coaxial flow focusing PDMS (polydimethylsiloxane) microfluidic device has been designed and manufactured by soft lithography in order to experimentally study a miscible inner flow. We studied a coaxially focused inner flow (formed by an aqueous fluorescein solution) which was fully isolated from all microchannel surfaces by an additional water outer flow. Different flow rates were used to produce a variety of flow ratios and a 3D reconstruction of the cross-section was performed using confocal microscope images. The results showed an elliptical section of the coaxially focused inner flow that changes in shape depending on the flow rate ratio applied. We have also developed a mathematical model that allows us to predict and control the geometry of the coaxially focused inner flow. Dinàmica de fluids Interfícies (Ciències físiques) Models matemàtics Experiments Fluid dynamics Interfaces (Physical sciences) Mathematical models Experiments Controlling shapes in a coaxial focusing microfluidic device: experiments and theory