Abstract
For the detection of specific bio-molecules, such as cells, proteins and DNA, it is necessary to verify the limit of detection (LOD) of an investigated giant magnetoresistive (GMR) sensor. We measured voltage drops across a GMR sensor before and after spreading magnetic particles on the surface of the GMR sensor and compared them to find the LOD of the GMR sensor. Magnetic particles (DynabeadsR ©) of 2.8 μm in diameter were used. The threshold for the detection was approximately 6 beads. This result indicates that the GMR sensor studied in this study can be used to detect bio-molecules, such as micron-sized cells.
Full Text
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call