| 摘要 |
A combination for rotating, translocating, or holding a magnetic bead (100) comprising a cell (102A) and a magnet (200) having a pointed end at the north or south pole. Also shown is a magnet comprising two or more magnet slices bonded to each other with alternating orientations of the north and south poles, wherein the junctions between the magnet slices define a surface, whereby local maxima of the magnetic field gradient dH/dx are found at the junctions. Also shown is a method for rotating, translocating, or holding a magnetic bead using the magnets shown.
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