electroosmosis – TechConnect Briefs

Real-time bacterial capture and sorting using dielectrophoresis and electroosmosis

Simon S.X., Markewich H., Mallick E., Weber M., Fluid-Screen, Inc., US

Fluid-Screen, Inc. presents a bacterial capture and sorting method based on dielectrophoresis (DEP) and electroosmosis (EO). These electronic phenomena have been known to influence particle motion and capture since the 1960’s, however, technology based on [...]

High efficiency E. coli concentration via dynamic light-induced optoelectro-osmosis flow

Yang S.M., National Chiao Tung University, TW

We demonstrate a dynamic light-induced optoelectroosmosis flow design for E. coli concentration on an organic photoconductive material based biochip. Several traditional approaches of purification and enrichment for bacteria are to use magnetic beads coated with [...]

Autonomous Nanoscale Motion Through Catalysis

Sen A., Pennsylvania State University, US

Nanoscale moving systems are currently the subject of intense interest due in part to their potential applications in nanomachinery, nanoscale assembly, robotics, tribology, fluidics, and chemical/biochemical sensing. Most of the research in this area has [...]

Aided Transport of Nano-Iron in Clay Soils Using Direct Electric Field

Hannum L., Pamukcu S., Lehigh University, US

The influence of direct current electric fields on the possible electrokinetic delivery of a nano-iron slurry in clay for the purpose of fast and effective remediation of soil contaminants has been tested. Nano-iron can be [...]

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 [...]

Aided Transport of Nano-Iron in Clay Soils Using Direct Electric Field

Hannum L., Pamukcu S., Lehigh University, US

The influence of direct current electric fields on the possible electrokinetic delivery of a nano-iron slurry in clay for the purpose of fast and effective remediation of soil contaminants has been tested. Nano-iron can be [...]

Control of Particles Using Multi-Frequency DEP

Loire S., Zhang Y., Bottausci F., Mezic I., McDonald N., university of california, santa barbara, US

We present numerical simulations and experiments on dielectrophoretic (DEP) separation and trapping performed in a titanium-based microchannel linear electrode array. The device is designed to allow for effects driven by inhomogeneities in electric-field magnitude driven [...]

Development of Microfluidic Device for Heterogeneous Immunoassay on Polystyrene Platform with Electroosmotic Control

Pribyl M., Snita D., Marek M., Institute of Chemical Technology Prague, CZ

We have developed a microfluidic device for heterogeneous immunoassay on the polystyrene platform. The wire-imprinting method has been chosen for the construction of microchannel structure of the chip. Immunoassay based on the interaction of fluorescently [...]

Strong DC and Low-Frequency AC Fields for the Manipulation of Particles and Fluids in Microfluidics

Kumar A., Qiu Z., Khusid B., Yeksel M., Acrivos A., New Jersey Institute of Technology, US

Electroosmosis and electrophoresis are considered to be the main phenomena for transport of aqueous liquids and particles in microfluidic devices because field-based techniques do not require any moving parts and can be incorporated more favorably [...]

Particle Movement in Microelectrode Structures in AC Electric Fields, Under the Influence of Dielectrophoresis and Electrohydrodynamics

Green N.G., University of Glasgow, UK

The use of AC electric fields for the manipulation, characterisation and separation of particles in suspension (dielectrophoresis: DEP) has become an area of considerable interest, both in basic research of the underlying physical mechanisms [1] [...]