Micro & Bio Fluidics, Lab-on-Chip – Page 30

Cell and Particle Concentration on the Chip

Irimia D., Toner M., Massachusetts General Hospital, Harvard Medical School, US

Lab-on-a-chip devices for cell processing and analysis are increasingly sophisticated and targeting a wider spectrum of scientific research and clinical diagnostic applications. Despite recent advances however, many sample preparation steps, common for macro-scale techniques, have [...]

Thermal modeling of a PMMA microfluidic separation chip

Zhu Y., Bui A., CSIRO Australia, AU

The main objective of the current work is to investigate the thermal performance, in particular Joule heating of polymer microfluidic chips involving electrokinetically driven flows using experimental and numerical methods. Most of the work focused [...]

Microfluidic T-Form Mixer Utilizing Pressure Disturbances

Ma Y.B., Fields M., Sun C.P., Zhang F.Y., Liao J-C, Li Y., Liao J-C, Churchill B.M., Ho C-M., University of California at Los Angeles, US

A simple solution to mixing problems in micro fluidic systems was presented in this paper. A T-form microfluidic mixer was designed and tested utilizing pressure disturbances. The performance of the mixer was studied through both [...]

Chaotic flows in microchannels: A lattice Boltzmann study

Varnik F., Raabe D., Max-Planck Institut fuer Eisenforschung, DE

Lubricant flows are usually assumed to be laminar and the lubricatedmetallic surfaces are anticipated to be perfectly flat and references therein). Both assumptions are incorrectwhen it comes to a detailed analysis. Indeed, metallic surfaces arenever [...]

Chemically Robust Microfluidic Devices for Radiochemistry Platforms

Rolland J.P., Elizarov A., Brewster J., Heath J.R., DeSimone J.M., Liquidia Technologies, US

We report the fabrication of solvent-compatible microfluidic devices based on photocurable “Liquid Teflon” materials. The materials are highly fluorinated functionalized perfluoropolyethers (PFPEs) that have liquidlike viscosities that can be cured into highly durable elastomers that [...]

A Micromachined Sparse Cell Isolation Device: Application in Prenatal Diagnostics

Mohamed H., Turner J.N., Caggana M., Wadsworth Center, New York State Department of Health, US

The isolation of fetal cells from maternal circulation is the subject of intense research. Fetal cells can be isolated using several enrichment methods, however no technique to specifically isolate and use them for genetic diagnosis [...]

Synthesis of Shear Thickening Fluid Using Sonochemical Method

Rangari V.K., Hassan T.A., Mahfuz H., Jeelani S., Tuskegee University, US

Shear thickening fluid is developed using sonochemical method which one step process and can be processed from its dry metal oxide powder forms instead of its colloidal solution. The main problem with the current process [...]

Microfluidics and Rheology of Carbon Black Dilute Suspensions: Modeling, Measurement, and Applications

Aramphongphun C., Hemminger O., Castro J.M., Lee L.J., The Ohio State University, US

Rheology and microfluidics are essential and challenging topics in designing microfluidic devices and materials processing. A study of rheological properties (e.g. viscosity) of complex fluids becomes more important in the flow at microscale due to [...]

Microfluidic System for Assessing the Controllability of MC-1 Magnetotactic Bacteria as Carriers in Micro-channels

Lu Z., Martel S., NanoRobotics Laboratory, CA

A novel micromanipulation method using Magnetotactic Bacteria to push micro-objects is proposed. The controllability of MC-1 Magnetotactic Bacteria in micro-channels is verified through microfluidic device with implemented micro-electromagets. After introducation of microfabrication procedure and experiment [...]

DNA Extraction with Parallel Electrodes on Microfluidic System

Parng S.H., Shia T.K., Yang H.J., Kuo C.H., Microsystem Technology Common Laboratory, TW

DNA trapping was demonstrated between an electrical field across two parallel integrated electrodes on chip fabricated by the MEMS techniques. The method to release the trapped DNA molecules using reversed voltage control electrical field was [...]