| abstract |
A microfluidic device comprising a plurality of microfluidic channels and a plurality of corresponding dielectrophoresis (DEP) electrode arrays 102, 103, 104 wherein each microfluidic channel is arranged to direct fluid over a DEP electrode array such that in use target particles are manipulated by the DEP electrode array, the device further comprising a first connection point 105 and second connection point 106 for connecting the device to an alternating current source 107 wherein a first input B, E, G of each DEP electrode array is connected to the first connection point via a first conductor 108 and a second input C, F, H of each DEP electrode array connected to the second connection point via a second conductor 109. The resistance of the first conductor between the first input of each array and the first connection point, and the resistance of the second conductor between the second input of each array and the second connection point is substantially at least an order of magnitude, preferably at least 10, less than the total resistance of the connected electrode arrays. Each DEP electrode array is associated with only one microfluidic channel (fig 2) and the DEP electrode arrays are electrically connected in parallel. |