Patent ID: 8932540
Filing Date: 2015-01-13
Classification: B01L,B03C

Abstract:
1. A device for transporting magnetic or magnetisable beads over a transport surface, comprising: a chamber containing magnetic or magnetisable beads in a fluid; a transport element including said transport surface within said chamber over which said beads shall be transported; a current wire structure including at least three sets of meandering current wires, said at least three sets arranged parallel to said transport surface on a side of said transport element opposite to said transport surface, said at least three sets being displaced with respect to each other parallel to the transport surface and crossed over each other at a plurality of crossing bridge points; and a switching driver configured to individually switch currents individually applied to said sets of current wires according to a current driving scheme such that the sets are individually provided with a periodic current signal comprising of a phase with a non-zero current and a phase with a zero current, wherein the periodic current signals for the individual sets are displaced in time such that non-zero currents are only present in only one set of the current wires at a time to transport said beads over said transport surface.