| 摘要 |
The invention relates to a microelectronic sensor device, particularly to a bio sensor with magnetic sensor units comprising excitation wires (11, 13) and a GMR sensor (12). The device further comprises a washing unit (20) consisting of a series of actuation wires (21) coupled to a driving unit (22). The driving unit (22) can activate the actuation wires selectively, wherein magnetic washing particles (2) are attracted to the activated wires. Shifting the activation pattern (R, S, T) then results in a corresponding movement of washing particles (2), which induces flow of the sample fluid that can wash away weakly bound and/or unbound target substance (3) from the sensor region (10) of the sensor units.
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