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Home > Issues > Volume 13 (2008) > No.1(pp.1-34)
Detection of Magnetic Nanoparticles and Fe-hemoglobin inside Red Blood Cells by Using a Highly Sensitive Spin Valve Device
Journal of Magnetics, Volume 13, Number 1, 31 Mar 2008, Pages 30-33
Abstract
A highly sensitive, giant magnetoresistance-spin valve (GMR-SV) biosensing device with high linearity and very low hysteresis was fabricated by photolithography. The detection of magnetic nanoparticles and Fe-hemoglobin inside red blood cells using the GMR-SV biosensing device was investigated. When a sensing current of 1 mA was applied to the current electrode in the patterned active devices with an area of 2×6 μm2, the output signals were about 13.35 mV. The signal from even one drop of human blood and nanoparticles in distilled water was sufficient for their detection and analysis.
Keywords: magnetic nanoparticles; Fe-hemoglobin; giant magnetoresistance-spin valve (GMR-SV); biosensor
DOI: 10.4283/JMAG.2008.13.1.30
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