Effect of laminar velocity profile variation on mixing in microfluidic devices: The sigma micromixer
Abbreviated Journal Title
Appl. Phys. Lett.
MICROCHANNELS; MIXER; Physics, Applied
The effect of the laminar velocity profile and its variation on mixing phenomena at the reduced scale is studied. It is shown that the diffusive mass flux between two miscible streams, flowing laminar in a microchannel, is enhanced if the velocity at their diffusion interface is increased. Based on this idea, an in-plane passive micromixing concept is proposed and implemented in a working device (sigma micromixer). This mixer shows considerable mixing performance by periodically varying the flow velocity profile, such that the maximum of the profile coincides with the transversely progressing diffusion fronts repeatedly throughout the mixing channel. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2996564]
Applied Physics Letters
"Effect of laminar velocity profile variation on mixing in microfluidic devices: The sigma micromixer" (2008). Faculty Bibliography 2000s. 1044.