Electrokinetic Flow in a Bio Chip

Model ID: 259

Miniature laboratories are required to efficiently analyze the information in the human DNA. One of the problems that arise in these lab-on-chip devices is in the transport of the liquid samples and other solutions in the chip, which are of very small dimensions.

One way of transporting the fluid in the samples is through the use of electrokinetic effects, where the charged ions in the solutions are subjected to an electric field. These ions are able to drag the whole solution through the channels in the micro chip from one analyzing point to the other.

COMSOL Multiphysics is able to solve for such phenomena by coupling Ohm's Law, through the solution, to the Navier-Stokes equations. At the boundaries of the fluid flow physics, we have used Equation-based modeling to describe flow as a function of electric potential gradient.