Dielectrophoretic Focusing and Separation of Nanoparticles: Experimental Measurement and Numerical Simulation

This paper presents results of the focussing and separation of particles in microchannels using specially designed and integrated microelectrodes. The behaviour of a range of particle sizes, down to -5Onm, were numerically simulated in microchannels containing the electrodes. The results of the simulations were then compared with the experimental results and discussed with regard to both the underlying theory and the potential for developing design tools. The separation of mixtures of different submicrometre particle types in flow-through microelectrode structures was also demonstrated.