Abstract: A device for transporting magnetic or magnetizable beads over a transport surface includes a chamber holding magnetic or magnetizable beads in a fluid, a transport element including the transport surface within the chamber, and a current wire structure including at least two sets of meandering current wires arranged on a side of the transport element opposite to the transport surface. The at least two sets are displaced with respect to each other in at least two directions. A switching unit switches currents individually applied to the sets of current wires according to a current driving scheme resulting in a transport of the beads over the transport surface.

Abstract: The present invention relates to a device (24) for transporting magnetic or magnetizable beads (10) over a transport surface (12). It comprises a chamber (26) comprising magnetic or magnetizable beads (10) in a fluid (28), a transport element (14) including said transport surface (12) within said chamber (26) over which said beads (10) shall be transported, a current wire structure (20) comprising at least two sets (20a, 20b, 20c) of meandering current wires arranged on a side of said transport element (14) opposite to said transport surface (12), said at least two sets (20a, 20b, 20c) being displaced with respect to each other in at least two directions, and a switching unit (32) for individually switching currents (1a, 1b, 1c) individually applied to said sets of current wires according to a current driving scheme resulting in a transport of said beads (10) over said transport surface (12).