The core of the trap consists of two 10mmX10mmXh neodymium-iron-boron permanent magnets with height h in the range 0.1mm - 2mm mounted on glass substrate (see Figure). The magnetization of the permanent magnets is directed in-plane, normal to the slit and opposite in direction to each other. The magnetic field is estimated to be 0.5T on the magnet surface with a minimum that lies along a line between the magnets (see next Figure). The article discuss situation in more details.

Figure shows disribution of the fluorescent beads 100nm in diameter inside the trap filled with paramagnetic buffer solution. This figure shows the position of the line with lowest value of magnetic field i.e. "diamagnetic decoration".

2 micron size beads floating in a magnetic pipeline. The beads flow inside the trap along a straight line inside the buffer solution where the magnetic field has its minimum. The time intervals between frames are 0.2 s. Arrows show the position of linked beads which serve as marker for the motion. Video shows this process in more detail.

The self assembly of an RBC chain in a linear magnetic trap. The time intervals between frames are 1 s. Arrows indicate the direction of the cell motion. Video shows this process in more detail.