| 摘要 |
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). In preferred embodiments a stationary substantially uniform magnetic field (30) in a direction substantially parallel to the transport surface (12) is additionally provided. |
