System of handling dielectric particles, particularly biological cells, by means of dielectrophoresis

摘要

A system for using dielectrophoresis to manipulate dielectric particles, in particular biological cells in suspension in a medium and subjected to the action of an alternating electric field of distribution that is made to be non-uniform by means of a regular array of electrodes suitable for defining local zones where the electric field is at a minimum in rows to concentrate particles in said local zones by the action of negative dielectrophoresis forces, wherein the array of electrodes is formed on the surface of a multilayer substrate, and wherein the same-polarity electrodes of the array are connected to respective common power supply pads via two arrays of conductor tracks which are formed at an intermediate level situated beneath the array of electrodes.