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Detection of magnetic nanoparticles and Fe-hemoglobin inside red blood cells by using a highly sensitive spin valve device
- Issue Date
- Mar-2008
- Publisher
- Seoul National University 501-321
- Keywords
- Biosensor; Fe-hemoglobin; Giant magnetoresistance-spin valve (GMR-SV); Mgnetic nanoparticles
- Citation
- Journal of Magnetics, v.13, no.1, pp 30 - 33
- Pages
- 4
- Journal Title
- Journal of Magnetics
- Volume
- 13
- Number
- 1
- Start Page
- 30
- End Page
- 33
- ISSN
- 1226-1750
2233-6656
- 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 2x6 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. © 2008 Journal of Magnetics.
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