dielectrophoresis – Page 4 – TechConnect Briefs

Combination Ultrasonic- Dielectrophoretic Particle Traps for Particle Trapping and Sample Purification in a Microfluidic Channel

Marina O., Ward M.D., Kaduchak G., Los Alamos National Laboratory, US

Ultrasonic and dielectrophoretic particle manipulation has been studied for particle trajectory modification and particle trapping in microfluidic channels. We report a new approach of a combination of dielectrophoresis (DEP) and ultrasonic fields to trap and [...]

Assessment of the dielectric properties of drug sensitive and resistant leukaemic cells before and after ion channel blockers using dielectrophoresis

Duncan L., Shelmerdine H., Coley H.M., Labeed F.H., University of Surrey, UK

Dielectrophoresis (DEP) is a phemomenon of induced particle motion in non-uniform electric fields. The effect is frequency dependent; by monitoring the motion of particles in AC fields and ananlysing the change in motion with frequency, [...]

Determination of relative concentrations of metallic and semi-conducting SWNTs in suspension via dielectrophoresis

Mureau N., Mendoza E., Hoettges K.F., Silva S.R.P, Hughes M.P., University of Surrey, UK

Dielectrophoresis (DEP) is a phemomenon of induced particle motion in non-uniform electric fields. The effect is frequency dependent; by monitoring the motion of particles in AC fields and ananlysing the change in motion with frequency, [...]

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 [...]

Modeling of Dielectrophoresis for Handling Bioparticles in Microdevices

Yao G.F., Flow Science Inc., US

Dielectrophoresis can be used to trap and position bioparticles efficiently and sucessfully in BioMEMS devices. This paper present a computational model to simulate this process. In particular, the model will solve for electric potential distribution, [...]

Modeling of the Dielectrophoretic Forces Acting upon Biological Cells: A Numerical Comparison between Finite Element/Boundary Element Maxwell Stress Tensor Methods and Dipole Point Approach

Benselama A., Pham P., Canot É., CEA, FR

Maxwell Stress Tensor (MST) method is investigated in this study to quantify the degree of approximation made with the point dipole method in respect to dielectrophoresis (DEP) in microdevices. Latex particles and biological cells immersed [...]

Dielectrophoresis (DEP) of Cells and Microparticle in PDMS Microfluidic Channels

Kanagasabapathi T.T., Backhouse C.J., Kaler K.V.I.S., University of Calgary, CA

Dielectrophoresis (DEP) [1] The behavior of polarized, neutral particles to the non-uniform electric field has been successfully applied for the levitation and subsequent isolation of biological cells and other micron-sized inorganic particles [2, 3]. This [...]

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] [...]

Simulation Methodology for Dielectrophoresis in Microelectronic Lab-on-a-chip

Leonardi A., Medoro G., Manaresi N., Tartagni M., Guerrieri R., DEIS - University of Bologna, IT

Recent trends in lab-on-a-chip show a growing use of dielectrophoresis (DEP) to manipulate biological objects such as cells and organic molecules [1], [2], [3], [4]. Bringing the advances of microelectronic miniaturization into biological and clinical [...]

Simulation Methodology for Dielectrophoresis in Microelectronic Lab-on-a-chip

Leonardi A., Medoro G., Manaresi N., Tartagni M., Guerrieri R., DEIS - University of Bologna, IT

Recent trends in lab-on-a-chip show a growing use of dielectrophoresis (DEP) to manipulate biological objects such as cells and organic molecules [1], [2], [3], [4]. Bringing the advances of microelectronic miniaturization into biological and clinical [...]