Generation of monodisperse microemulsions in the colloidal range and stabilized monodisperse microbubbles with diameters of 5 microns using two different types of micro fluidic devices.

摘要

Here we propose two different ways to generate either monodisperse microemulsions or monodisperse mi-crobubbles. The first of these techniques, the coflow configuration, consists of a flow rate.iof a fluid with aviscosity.i that discharges into an immiscible liq- uid of viscosity.othat flows in parallel with the axis of the injector. When operating under the appropriate conditions, concentrated emulsions composed of micron-sized drops with a narrow size distribution can be generated. Nevertheless, this procedure is not equally valid to generate the type of monodisperse bubbles required in many different pharmaceutical, medical and material science applications. As a consequence, we propose avariant of the coflow configuration implemented in atwo-dimensional PDMS device for the production of ..5...bubbles with a polydispersity index below 5% at high production rates (..10~5bubbles/s).