Micro & Bio Fluidics, Lab-on-Chip – Page 43

Modular Silicon Micropump

Johnson A.D., Martynov V., Gupta V., Menchaca L., TiNi Alloy Company, US

A new micropump mechanism has been created that consists of two silicon/silicon oxide dies with vias and dome-shaped membranes. The membranes are bonded face-to-face to form variable-volume domed liquid chambers. The membranes increase and decrease [...]

A Computational Model for Simulation of Electroosmotic Flow in Microsystem

Yao G.F., Flow Science Inc., US

Electroosmotic flow is created by applying an external electrical field on the electrical double layer (EDL) formed due to the interaction of an electrolyte solution with dielectric surfaces. This kind of flow plays an important [...]

A Simple Description of Turn-induced Transverse Field Dispersion in Micrlfluidic Channels for System-Level Design

Magargle R.M., Hoburg J.F., Mukherjee T., Carnegie Mellon University, US

This abstract shows a simple analytical model for turn-induced dispersion that captures an essential aspect of the transition field from uniform to circumferential that has been ignored in prior simple descriptions. The model applies directly [...]

Surface Micromachined Viscous Spiral Pump

Kilani M.I., Galambos P.G., Haik Y., Chen C-J., Florida State University, US

This paper introduces a new viscous micropump produced using surface micromachining technology. The pump consists of a disk with a spiral protrusion that rotates at a close proximity over a stationary plate. Fluid contained in [...]

Modelling Annular Micromixers

Gleeson J.P., Roche O.M., West J., Gelb A., University College Cork, IE

The search for efficient mixing methods in the low Reynolds numbers flows typical of lab-on-a-chip technology has led us to propose an annular magnetohydrodynamic micromixer, currently under construction at the NMRC. In this talk we [...]

Modeling of the Kinetics of Capture of Pathogens Enhanced by a Marangoni Flow

Pham P., Achard J.L., Berthier J., Ginot F., CEA-LETI, FR

Binding of targetted biomolecules, pathogens or analytes on a reactive surface is commonly used for biodiagnostic systems. However the process is slow and inefficient if one relies only on molecular diffusion to transfer the analytes [...]

Low Damping Differential-Capacitive Sensing Comb

Yeon S.C., Jeon Y.K., Kim Y.H., Seoul National University, KR

In the present study, a specially designed sensing comb is proposed for low damping and high capacitance. Many researchers have proposed high aspect ratio single crystal silicon structure to improve sensitivity in capacitive sensing and [...]

Hierarchical Finite Element Simulation of Perforated Plates with Arbitrary Hole Geometries

Råback P., Pursula A., Junttila V., Veijola T., CSC - Scientific Computing, FI

The squeezed-film-damping of micro-electro-mechanical devices may be reduced by creating a number of small holes into the structure. Unfortunately, in the simulation of the devices it is possible to consider only a few holes in [...]

Electroosmotic Pumping of Nonconducting Liquids by Viscous Drag from a Secondary Conducting Liquid

Brask A., Goranovic G., Bruus H., Technical University of Denmark, DK

A novel electroosmotic pump design relying on two-liquid viscous drag to pump nonconducting liquids is presented and analyzed theoretically. A conducting pumping liquid driven by electroosmotic flow (EOF) drags a nonconducting working liquid by viscous [...]

Numerical Simulation of Electroosmotic Flow in Micro Channels with Analytical Integration of Surface Potential

Chen Z., Athavale M., Przekwas A., CFD Research Corporation, US

We have developed a new methodology to simulate electroosmotic flows in micro channels, which allows us to accurately produce the effects of the double layer without resolving it. The method is a subgrid type model [...]