Micro & Bio Fluidics, Lab-on-Chip – Page 50

Optimization of a MEMS Based Micro Capillary Pumped Loop for Chip-Level Temperature Control

Trebotich D., Kirshberg J., Teng J., Liepmann D., University of California, US

Recent results in the microfluidics group at the Berkeley Sensor and Actuator Center and the Air Force Research Laboratory have shown that a micro-capillary pumped loop (micro-CPL) can move extreme amounts of heat (< 200 [...]

Microflows with Moving Boundaries: Experiment and Simulation

Maier C., Hofer E.P., University of Ulm, DE

Surface forces and capillary effects can play a dominant role in fluidic microsystems. Therefore it is crucial for simulations to use accurate numerical approaches [1]. Furthermore experimental data gained from such surface dominated systems can [...]

Insects Separate Diffusing Particles in Parallel

Lawry J.V., California Academy of Sciences, US

The circulation of insects and other invertebrates transfers heat, mass, and momentum within micro-fluids through phase interfaces of complex geometry at size ranges important for developing compact energy and chemical systems. Pump size and vascular [...]

Use of Numerical Methods for Modeling and Simulating Capillary Driven Flows in Microchannels

Quinte A., Halstenberg S., Eggert H., Forschungszentrum Karlsruhe, DE

Today, medical test strips are used for rapid diagnostics and the quick and easy determination of biomedically relevant parameters, such as the content of glucose of the blood. For the transport of the test uid [...]

A Stochastic Projection Method for Microchannel Flow

Le Maitre O.P., Knio O.M., Ghanem R.G., Najm H.N., John's Hopkins University, US

The construction and implementaion of a stochastic flow solver is described. The solver combines a spectral stochastic uncertainty representation scheme with a finite difference projection method for flow simulation. The uncertainty quantification scheme is based [...]

Three-Dimensional Single Step Flow Sheathing in Micro Cell Sorters

Goranovic G., Perch-Nielsen I., Larsen U.D., Wolff A., Kutter J., Telleman P., Bio/Chemical MicroSystems, DK

We present a novel microstructure that enables 3 dimensional hydrodynamic focusing of cells in a pressure driven micro cell sorter. This so-called "chimney" structure for single step coaxial sheathing was designed and optimized through simulation, [...]

A Fluid Dynamics Model for a Plasma Ion Acceleration System

Domingo F.S., Ramos H.J., University of the Philippines, PH

We present preliminary results of some simulations for a plasma ion acceleration system, which we plan to construct. This system tires to model the complex interactions between the multiple species of ions (about 5) used [...]

Computational Design Analysis for In-Plane Microfluidic Valves

Dickey C.K., Makhijani V.B., Deshmukh A., Liepmann D., CFD Research Corporation, US

Simulations of fluid flow across in-plane microvalves were performed using an advanced multi-physics commercial software system and compared with experimental data. Model validation required careful consideration of leakage pathways left by fabrication artifacts. Following model [...]

A Mathematical Model of a Biosensor

Botkin N.D., Schlensog M., Tewes M., Turova V.L., Center of Advanced European Studies and Research, DE

A mathematical model of a biosensor is considered. The biosensor is supposed to be used for the measurement of small amounts of certain substances in liquids. The device works as follows: acoustic shear waves are [...]

Application of the Direct Simulation Monte Carlo Method to Modeling of Microfluidics

Sharipov F., Universidade Federal do Parana, BR

For mathematical modeling of microfluidics it is necessary to calculate a rarefied gas flow through micropumps, microvalves and other elements with high accuracy. Since the size of microfluidics is close to the molecular mean free [...]