Electrokinetic micropump and micromixer design based on ac faradaic polarization

摘要: A microfluidic pump and mixer design based on ac faradaic polarization is proposed. Unlike electrokinetic devices capacitive charging of the electrodes, yields a net electro-osmotic flow for high-conductivity electrolytes at high voltages frequencies without producing gas bubbles or generating pH gradients. The average velocity, which can be more than an order magnitude higher that generated by mechanism, has exponential dependence voltage increases monotonically low frequencies. Vortices flows with linear velocities in excess 1mm∕s are orthogonal microfabricated planar electrodes unique features this new mechanism.