| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Green, Nicolas G.
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Topics
Publications (9/9 displayed)
- 2022Particle-induced electrostatic repulsion within an Electric Curtain Operating below the Paschen Limitcitations
- 2018Controlling the phase transition of vanadium oxide using plasmonic metamaterials
- 2008Electrothermal liquid motion in microsystems subjected to alternating and rotating electric fieldscitations
- 2008Analytical and numerical modeling methods for impedance analysis of single cells on-chipcitations
- 2006Experiments on AC electrokinetic pumping of liquids using arrays of microelectrodescitations
- 2004Numerical simulation of travelling wave induced electrothermal fluid flowcitations
- 2003Electrohydrodynamics and dielectrophoresis in microsystems: scaling lawscitations
- 2002Manipulation of bio-particles in microelectrode structures by means of non-uniform ac electric fieldscitations
- 2000Electric field induced fluid flow on microelectrodes: the effect of illuminationcitations
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article
Electrohydrodynamics and dielectrophoresis in microsystems: scaling laws
Abstract
The movement and behaviour of particles suspended in aqueous solutions subjected to non-uniform ac electric fields is examined. The ac electric fields induce movement of polarizable particles, a phenomenon known as dielectrophoresis. The high strength electric fields that are often used in separation systems can give rise to fluid motion, which in turn results in a viscous drag on the particle. The electric field generates heat, leading to volume forces in the liquid. Gradients in conductivity and permittivity give rise to electrothermal forces and gradients in mass density to buoyancy. In addition, non-uniform ac electric fields produce forces on the induced charges in the diffuse double layer on the electrodes. This causes a steady fluid motion termed ac electro-osmosis. The effects of Brownian motion are also discussed in this context. The orders of magnitude of the various forces experienced by a particle in a model microelectrode system are estimated. The results are discussed in relation to experiments and the relative influence of each type of force is described.