| 摘要 |
The invention relates to a magnet system for biosensors. To achieve a magnetic system, which can switch between attraction force and repulsion force, near the sensor surface, the magnetic system has at least one coil (1) and a ferromagnetic open ring system (3), where both magnetic pole faces are adjacent to each other over a gap (4) in which the biosensor is located, and where the coil (1) or the ferromagnetic core (2) in the coil, or an inner part of the ferromagnetic core in relation to each other are shiftable, in order to change the magnetic force direction near the biosensor surface. |
