Micro & Bio Fluidics, Lab-on-Chip – Page 24

Multi-physics Simulational Analysis of a Novel PCR Micro-Device

Wang Y., Pant K., Grover J., Sundaram S., CFD Research Corporation, US

While microfluidic devices for PCR amplification have critical applications in biodefense, homeland security, forensics and diagnostics, their efficient simulation and design continue to be a challenge. An experiment-only trial-and-error approach can prove to be prohibitively [...]

Numerical simulation of the droplet generation mode transition of the co-flowing liquids in micro-channel

Hua J.S., Cheng M., Liu T.G., Institute of High Performance Computing, SG

A front tracking method based multiphase flow simulation (Unverdi and Tryggvason, 1992) is adopted to investigate the transition mechanism of droplet formation modes of dripiing and jetting. The numerical method solves a single set of [...]

Drop formation mechanisms in piezo-acoustic inkjet

Wijshoff H.M.A., Océ Technologies B.V., NL

Drops are generated with a piezo inkjet device. A piezo actuator drives each channel. Drops are measured with stroboscopic illumination or high-speed camera recordings. The phenomena inside the channels are hard to measure. Modeling give [...]

Numerical Analysis of Nonlinear Deformation and Breakup of Slender Microjets with Application to Continuous Inkjet Printing

Furlani E.P., Eastman Kodak Company, US

Liquid microjets are inherently unstable and can be modulated in a controlled fashion to create steady streams of picoliter-sized droplets at frequency rates in the hundreds of kilohertz. Such modulation has been achieved using CMOS/MEMS [...]

Novel Electro Magnetic Micro Pump

Feldmann M., Demming S., Büttgenbach S., Institute for Microtechnology, DE

The mergence of partial aspects and functional components of micro actuators and micro fluidic technology allows the development of complex micro systems. This enormous potential is shown in this article by the realization of an [...]

A Rapid Prototyping and Mass-Production Platform of Microfluidic Devices

Craig Kung P., Kung Y.L., Holcombe D., Grace R.H., Ungelenk G., Piechotka E., Seiferth W., Optotrack, Inc., US

Microfluidic chips, disposable biosensors, and micro-optical devices have been primarily manufactured from silicon- or glass-based substrates for years. This approach involves sophisticated production tools, tedious development processes, and clean-room conditions. Given today’s fierce competition in [...]

Micro and Nano Fluidics Design and Simulation

Particle Electrophoresis in Closed-both-end Capillary and Likely Charged Particle Aggregation Induced by AC Electric Field

Qiu Z.Y., Shen Y., City College of New York, US

Electroosmosis flow (EOF) is a critical issue in electrophoresis separation techniques. The magnitude of EOF problems and difficult level of its solution are demonstrated by 33 issued US Patents on different methods to suppress or [...]

Fixed-Valve Micropump Simulation and Optimization

Forster F.K., Walter T., University of Washington, US

Membrane pumps with fixed-geometry valves are ex- tremely simple to fabricate and have the potential to be highly reliable and cheap due to their simplicity. We have recently implemented a means of optimizing design parameters [...]

Chaotic mixing using periodic and aperiodic sequences of mixing protocols in a micromixer

Kang T.G., Singh M.K., Kwon T.H., Anderson P.D., Eindhoven University of Technology, NL

We conducted a numerical study on mixing in a barrier embedded micromixer with an emphasis on the effect of periodic and aperiodic sequences of mixing protocols on mixing performance. A mapping method was employed to [...]