dielectrophoresis – Page 2 – TechConnect Briefs

Rapid Detection of Oral Cancer: Electrophysiological Characterization by Dielectrophoresis technology

Mulhall H.J., Abdallat R., Liang X., Fedele S., Lewis M.P., Porter S., Costea D.E., Johannessen A.C., Hughes M.P., Tsinkalovsky O., Labeed F.H., University of Surrey, UK

Microengineered medical devices offer many potential benefits for point-of-care healthcare and rapid diagnosis. We have developed a microengineered system using the electrostatic phenomenon dielectrophoresis (DEP) to non-invasively determine the electrophysiological parameters of normal and cancerous [...]

Effect of Source, Surfactant, and Deposition Process on Electronic Properties of Nanotube Arrays

Jain D., Rouhi N., Rutherglen C., Burke P.J., University of California Irvine, US

Carbon nanotubes are currently being sought as a potential candidate in the device research area. However, a scalable manufacturing technology for nanotube devices with appropriate yield, reproducibility, and performance in various metrics (mobility, on/off ratio, [...]

Dielectrophoresis and Comsol Simulation of Cell Entrapment At Electrodes

Padmaraj D., Zagozdzon-Wosik W., Pande R., Miller J.H., Xie L-M, Wosik J., Zagozdzon-Wosik W., University of Houston, US

Dielectric properties of biological samples change with frequency of the interrogating electric field therefore can be used to obtain information about structures and various kinetic as well as bio-physical and –chemical processes in the cells. [...]

External Field Induced Non-Uniform Growth of Micron Composite Materials in Insulating Liquid: Experimental and Simulating

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

Numerical simulation is performed of motion and cluster formation of particles in a flowing suspension of particles in corn oil through a 60x120x3.0mm chamber with a spatially periodical electrode array. The chamber is rotated to [...]

Dielectrophoretic characterization and separation of metastatic variants of small cell lung cancer cells

Menachery A., Burt J., Chappell S., Errington R.J., Morris D., Smith P.J., Wiltshire M., Furon E., Pethig R., Bangor University, UK

In this study, the ability of Dielectrophoresis (DEP) to recognize phenotypic variants of small cell lung cancer (SCLC) cells has been tested. The phenotypic variations of the SCLC cells are associated with the cell-surface decoration [...]

Lateral-Driven Continuous Dielectrophoretic Separation Technology for Blood Cells suspended in a Highly Conductive Medium

Seo J., Jung J., Jung Y., Han K-H, Han S-I., Han K-H, Han S-I., Jung J., Jung Y., Bruno Frazier A., Inje University, KR

This paper presents lateral-driven continuous dielectrophoretic (DEP) microseparator for separating red and white blood cells suspended in a highly conductive dilute whole blood. The DEP microseparators enable the separation of blood cells with continuous operation [...]

A High Throughput Multi-stage, Multi-frequency Filter and Separation Device based on Carbon Dielectrophoresis

Martinez-Duarte R., Andrade-Roman J., Collado-Arredondo E., Martinez S.O., Martinez-Duarte R., Madou M., University of California Irvine, US

We present a multi-stage, multi-frequency carbon dielectrophoresis (CarbonDEP) device for high throughput filtering and separation applications in the health care and biotechnology fields. CarbonDEP refers to the use of carbon electrodes to induce DEP. Up [...]

Fluidic and Electrical Characterization of 3D Carbon Dielectrophoresis with Finite Element Analysis

Martinez-Duarte R., Collado-Arredondo E., Cito S., Martinez S.O., Martinez-Duarte R., Madou M., University of California Irvine, US

The following work presents the fluidic and electrical characterization of a 3D electrodes array to be used in high throughput and high efficiency Carbon Dielectrophoresis (CarbonDEP) applications such as multi-stage filters, continuous particle enrichment and [...]

Capacitance signatures for rapid detection of the polarity of the dielectrophoretic force on single yeast cells

Ferrier G.A., Romanuik S.F., Thomson D.J., Bridges G.E., Freeman M.R., University of Manitoba, CA

Previously, we demonstrated a system that can detect the presence of yeast cells using capacitance measurements from a cavity resonator. The resonator is coupled to a set of electrodes, which are aligned 90 degrees relative [...]

Subcellular fractionation in a fluidic microsystem

Paulus A., Posch A., Hausmann M., Blankenstein G., Duong T., Kentsch J., Angres B., Stoll D., Stelzle M., NMI Natural and Medical Sciences Institute, DE

The availability of an easy-to-use, reproducible method for subcellular fractionation would significantly promote qualitative and quantitative analysis of subcellular protein composition. A microfluidic system with integrated electrodes was designed and fabricated allowing for dielectrophoretic manipulation [...]