A mathematical model and computer code for simulat-ing electrokinetic fluid and sample manipulations in micro-fabricated fluidic devices (microchips) are described. The model accounts for mass transport mechanisms such as electrophoretic migration, bulk fluid motion due [...]
, Mellmann, J.
, Sandmaier, H.
, Sesterhenn, M.
, Stierle, B.
, Strobelt, T.
, University of Stuttgart, DE
In this paper, a toolbox of lumped models for simulating (self-)priming and emptying of complex capillary networks is presented. Each model is a kind of an all-in-one-model, that considers inertia, friction, gravitation and capillarity and [...]
, de Heij, B.
, de Rooij, N.F.
, Hess, J.
, van der Schoot, B.
, University of Neuchätel, CH
We present a piezo-electrically driven droplet generator with a large number of nozzles working in parallel and operating in the Drop On Demand mode. This device is build as part of a system for Inhalation [...]
Micro-filters are fabricated using MEMS technology, and both measurements and numerical calculations are carried out in order to estimate the power requirement in a micron-size particle collection process using the micro-filter. In order to numerically [...]
In this paper a newly developed model for identification and simulation of dynamic phenomena in a thermal ink jet is presented. As a result of the modeling the calculation of the pressure propagation in the [...]
, Carmona, M.
, Esteve, J.
, Marco, S.
, Plaza, J.A.
, Samitier, J.
, University of Barcelona, ES
This work deals with the analysis of silicon passive microvalves. The analysed microvalves consist of a circular central mass suspended by two flexible beams anchored on a pyrex substrate. The mechanical and fluidic analysis are [...]
To investigate hydrodynamic dispersion in electroosmotic ?ow, we have derived an asymptotic series solution for the problem of two-dimensional species transport in a tube or channel. This solution is applicable to the late-time diÆusive and [...]
The paper presents the results of a numerical study of heat and mass exchanges inside a porous matrix. The porous medium is in contact with a solid surface heated over boiling point and steeped in [...]
The mass flow rate of a rarefied gas through a long rectangular channel caused by both pressure and temperature differences has been calculated applying the S model kinetic equation. The calculations have been carried out [...]
This paper presents the results of high-fidelity, 3-D simulations of coupled flow, heat-transfer and structural mechanics simulations of microchannels, micropumps, microvalves, and time-accurate simulations of a microoscillator. In each of these cases, the simulated results [...]
, Kreutz, E.W.
, Loosen, P.
, Ollier, B.
, Pirch, N.
, Poprawe, R.
, Wester, R.
, Rheinisch-Westfälische Technische Hochschule Aachen, DE
Water-cooled heat sinks are investigated both experimentally and theoretically as model systems to simulate the energy and mass transport in devices used for cooling of diode lasers. The design of the micro-channel heat sinks yields [...]
Advances in silicon fabrication technology enable the reproduction of laboratory apparatus, and theoretically biochemical processes, on a microscale. The implementation of this technology, however, necessitates additional study as fluid dynamics change at this scale and, [...]
A lumped-mass model is used to improve the design of the valveless diffuser pump. The model is implemented using MATLAB and tested for different previously reported pumps. The flow-pressure characteristics are predicted for different excitation [...]
The flow directing capability of micromachined flat-walled diffuser elements for valve-less micropumps have been investigated. The diffuser element is a small angle flow channel with a rounded inlet and a preferably sharp outlet. The diverging-wall [...]
Journal: TechConnect Briefs
Volume: Technical Proceedings of the 1999 International Conference on Modeling and Simulation of Microsystems
Published: April 19, 1999
Industry sector: Sensors, MEMS, Electronics
Topicss: Micro & Bio Fluidics, Lab-on-Chip, Modeling & Simulation of Microsystems