Micro & Bio Fluidics, Lab-on-Chip – Page 42

Layout Verification by Extraction for Micro Total Analysis Systems

Baidya B., Mukherjee T., Carnegie Mellon University, US

The increasing complexity of MicroTotalAnalysis Systems is leading to a growing need for verification tools for such designs. Numerical simulation of such designs are slow, memory consuming and practically impossible for large designs. Schematic-based simulation [...]

Quasi-static Motion of Bubbles in Microchannel Contractions

Jensen M.J., Goranovic G., Bruus H., Technical University of Denmark, DK

We present a thorough theoretical and computational study of bubble dynamics in icrofluidic channels with contractions. We investigate the effects of geometry and surface physics (friction and contact angle) on the behavior of incompressible bubbles, [...]

CFD-based Optimization of Gas/Liquid Microreactors with Droplet and Bubble Transport

Hardt S., Pennemann H., Jiang F., Institute of Microtechnology Mainz, DE

Microreactors offer unique opportunities for the control of process parameters unparalleled by macroscopic equipment. A new gas/liquid microreactor is proposed allowing for fast mass transfer and small concentration gradients as well as a very narrow [...]

Topology Trade-offs in the Synthesis of Chip-based Electrophoretic Separation Systems

Pfeiffer A.J., Mukherjee T., Hauan S., Carnegie Mellon University, US

Micro-scale electrophoretic separation systems provide a highly effective, versatile and inexpensive method for separating a wide variety of chemical components. Particularly useful applications include separation of biological molecules, chemical sensing, and mobile drub delivery systems. [...]

Simulation of a Polymer Drop in a Shear Field with Dissipative Particle Dynamics Method

Chen S., Phan-Thien N., Fan X.J., Khoo B.C., National University of Singapore, SG

In the present study, the dynamics of polymer drops in micro channel under both steady state and transient shear flow conditions are investigated using Dissipative Particle Dynamics method. The polymer drop is made from finitely [...]

Numerical Simulation of Microfluidic Flow Using a Combination of Micro and Macro Computational Techniques: Scaling Issues

Mautner T., SPAWAR Systems Center San Diego, US

Recent literature has demonstrated the possibilities of using configurable surfaces to enhance the flow of fluids in MEMS devices. Not only are surface properties important in fluid delivery, the inherent problems of mixing by diffusion [...]

Modelling and Optimization of Medical Test Strips Made From Plastics

Peters D., Bolte H., Laur R., University of Bremen, DE

Introduction In cooperation with industrial partners, a behavioural model for the microsystem ‚Medical Test Strips‘ has been created by the authors in order to decrease cost and effort in the design process. As there is [...]

Numerical Simulation of Field Amplified Sample Stacking in Microfluidic System

Feng J.J., Krishnamoorthy S., Sundaram S., Bhardwaj R., Santiago J.G., CFD Research Corporation, US

In this paper we developed a numerical simulation method that solves the transport phenomenon associated with sample stacking in microchip-based separation system. The model is based on thin double layer approximation where the electrostatic force [...]

Simulation and Optimization of Colloidal Micropumps

Liu D., Maxey M., Karniadakis G., Brown University, US

A fast algorithm for particulate microflows has been used to simulate the 3D micro-colloidal pumps tested in the experiments conducted by Terray et al. The Force-Coupling Method and a penalty method were implemented in a [...]

A Study on the Novel Type of Ferrofluid Magnetic Pipette

Ahn J.J., Oh J., Choi B., Sogang University, KR

This study was performed to design the novel type of ferrofluid magnetic pipette on a micro scale for the purpose of applications to delivery systems, which is the core device of Lab on a chip [...]