| 摘要 |
There is provided a cross-type magnetic array sensor for biomolecules magnetic bead detection having a structure of various types, which can be used as a high-sensitivity and high-density magnetic biosensor. Since a vertical output voltage vertically crossing an applied current direction can be measured, it is possible to measure high-sensitivity magnetic-field variation in comparison with a known magnetic bead detection device that measures an output voltage parallel to the applied current direction. As a result, a magnetic bead magnetic-field detection device having a high signal-to-noise ratio can be achieved. Further, since the cross-type magnetic array sensors for biomolecules magnetic bead detection measure a vertical voltage, magnetic beads can be magnetized by an applied current induction magnetic field that is generated by an applied current without a magnetic field applied from the outside.
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