electroosmotic flow – TechConnect Briefs

Static and Dynamic Properties of the Electrical Double Layer Near Amorphous Silica: Relevance for Device Design

Shi B., Shin Y.K., Zhang H., Hassanali A., Shin Y.K., Knight C., Singer S.J., Ohio State University, US

Amorphous silica (“glass”) is commonly used to fabricate micro- and nano-fluidic devices. Using an atomistic model, we have studied the static and dynamic properties of the electrical double layer near the water/amorphous silica interface. The [...]

Enhancement of micro-flow mixing using DC nonlinear electrokinetic vortices

Chen J.K., Yang R-J, National Cheng Kung University, TW

Electroosmotic flow (EOF) is a fundamental electrokinetic phenomenon which finds extensive use in wide varieties of practical biochip applications and analyses. Generally, the dielectric materials (PDMS, glass, etc.) used to construct microchips have low dielectric [...]

Scaling of Electroosmotic Flow and Ionic Conductivity in Nanochannels

Qiao R., Aluru N.R., Beckman Institute for Advanced Science and Technology, US

Electrokinetic transport is widely encountered in many nanofluidic systems, and understanding its scaling as a function of various operating conditions, e.g., bulk concentration, is important for establishing design rules and for exploring the design space. [...]

Taylor Dispersion in Electroosmotic Flows with Random Zeta Potentials

Gleeson J.P., Stone H.A., University College Cork, IE

Electroosmotic flows are extensively employed for fluid transport and sample separation in lab-on-a-chip technologies, capillary zone electrophoresis, and generally in channels and capillaries with length scales on the order of 100 microns or less. Experimental [...]

SOI Processing of a Ring Electrokinetic Chaotic Micromixer

Zhang Y.T., Chen H., Mezic I., Meinhart C.D., Petzold L., MacDonald N.C., university of california, santa barbara, US

Micromixing has been an active research area in the past decade due to the rapid expanding application of the lab-on-a-chip system in life science. Using the silicon bulk micromachining technology, a ring electroosmotic micromixer, which [...]

Electrokinetic Instability Mechanism of Double-layered Miscible Fluids with Different Electrolyte Concentrations in DC Electric Field

Park J.W., Kang K.H., Huh K.Y., Pohang University of Science and Technology, KR

Interfacial instability has recently been observed for DC-powered electroosmotic flow by Chen and Santiago [1]. So far, no plausible explanation has yet been made since the phenomenon is contrary to common belief of laminar flow [...]

Keywords: electroosmotic flow