Magnetohydrodynamic mixing of two fluids in an annular microchannel is modelled as a twodimensional, laminar, convection-diffusion problem, and examined using asymptotic analysis and numerical simulation. The time T required for mixing of a plug of solute depends on the Peclét number Pe, and on the geometry of the annulus. Three scaling regimes are identified: purely diffusive, Taylordispersive...

Despite the copious amount of research on the design and operation of micromixers, there are few works regarding manufacture technology aimed at implementation beyond academic environments. This work evaluates the viability of xurography as a rapid fabrication tool for the development of ultra-low cost microfluidic technology for extreme Point-of-Care (POC) micromixing devices. By eschewing pho...

In this study a biophysical passive micromixer with channel anamorphosis in a space of 370 μm, which is shorter than traditional passive micromixers, could be created by mimicing features of vascular flow networks and executed with Reynolds numbers ranging from 1 to 90. Split and recombination (SAR) was the main mixing method for enhancing the convection effect and promoting the mixing performa...

A numerical study of 3D electrokinetic flows through micromixers was performed. The micromixers considered here consisted of heterogeneous rectangular microchannels with prescribed patterns of zeta-potential at their walls. Numerical simulation of electroosmotic flows within heterogeneous channels requires solution of the Navier-Stokes, Ernest-Plank and species concentration equations. It is kn...

Micromixers have important applications in various pharmaceutical and medical fields. In the present study, enhancement of mixing index electroosmotic micromixer with different geometries is investigated. The commercial software COMSOL Multiphysics 5.4 employed to solve mathematical models. SIMPLEC
 algorithm for coupling velocity pressure A second-order upwind scheme used reduce artificia...

Due to high mixing performance and simple geometry structure, serpentine micromixer is one typical passive that has been widely investigated. Traditional zigzag square-wave micromixers can achieve sufficient mixing, but tend induce significant pressure drop. The excessive drop means more energy consumption, which leads low cost-performance of mixing. To mitigate drop, a novel utilizing ellipse ...

Background Protecting drinking water supplies from pathogens such as Cryptosporidium parvum is a major concern for water utilities worldwide. The sensitivity and specificity of current detection methods are largely determined by the effectiveness of the concentration and separation methods used. The purpose of this study is to develop micromixers able to specifically isolate and concentrate Cry...

Abstract A dynamic mixing model for a microfluidic platform that uses bending and twisting characteristic is proposed in this work. The action of on efficient the microchannel tested using Navier-Stokes equations. Micromixers being broadly applied micro total analysis systems (µTAS). Passive micromixers are largely preferred from their heftiness, serenity amalgamation cost effective. However ra...

a numerical study of 3d electrokinetic flows through micromixers was performed. the micromixers considered here consisted of heterogeneous rectangular microchannels with prescribed patterns of zeta-potential at their walls. numerical simulation of electroosmotic flows within heterogeneous channels requires solution of the navier-stokes, ernest-plank and species concentration equations. it is kn...