Signal Detection by Using a GMR-SV Biosensor for Magnetic $mu$-beads Attached to Red Blood Cells

Lee, Jaeyeon; Kim, Moon-Jong; Khajidmaa, Purevdorj; Bolormaa, Munkhbat; Lee, Sang-Suk

doi:10.3938/npsm.64.958

New Physics: Sae Mulli

2014

DOI: 10.3938/npsm.64.958

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Signal Detection by Using a GMR-SV Biosensor for Magnetic $mu$-beads Attached to Red Blood Cells

Jaeyeon Lee¹,

Moon-Jong Kim²,

Purevdorj Khajidmaa³

et al.

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“…Here, the easy axis is perpendicular to the longitudinal direction [7,9]. The frequency of AC current is 20 kHz.…”

mentioning

confidence: 99%

Distribution of Magnetic Field Depending on the Current in the μ-turn Coil to Capture Red Blood Cells

Lee¹,

Chung²,

Kim³

et al. 2015

Journal of the Korean Magnetics Society

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The µ-turn coil having a width of µm on the GMR-SV (giant magnetoresistance-spin valve) device based on the antiferromagnetic IrMn layer was fabricated by using the optical lithography process. In the case of GMR-SV film and GMR-SV device, the magnetoresistance ratios and the magnetic sensitivities are 4.4 %, 2.0 %/Oe and 1.6 %, 0.1 %/Oe, respectively. In the y-z plane the distribution of magnetic field of GMR-SV device and 10 µ-turns coil which put under the several magnetic bead(MB)s with a diameter of 1 µm attached to RBC (red blood cell) was analyzed by the computer simulation using the finite element method. When the AC currents of 20 kHz from 0.1 mA to 10.0 mA flow to the 10 turns µ-coil, the magnetic field at the position of z = 0 µm at the center of coil was calculated from 30.1 µT to 3060 µT in proportion to the current. The magnetic field at the position of z = 10 µm was decreased to one-sixth of that of z = 0 µm. It was confirmed that the 10 µ-turn coil having enough magnitude of magnetic field for the capture of RBC is possible to use as a biosensor for the detection of magnetic beads attached to RBC.

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“…Here, the easy axis is perpendicular to the longitudinal direction [7,9]. The frequency of AC current is 20 kHz.…”

mentioning

confidence: 99%

Distribution of Magnetic Field Depending on the Current in the μ-turn Coil to Capture Red Blood Cells

Lee¹,

Chung²,

Kim³

et al. 2015

Journal of the Korean Magnetics Society

View full text Add to dashboard Cite

show abstract

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Signal Detection by Using a GMR-SV Biosensor for Magnetic $mu$-beads Attached to Red Blood Cells

Cited by 1 publication

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Distribution of Magnetic Field Depending on the Current in the μ-turn Coil to Capture Red Blood Cells

Distribution of Magnetic Field Depending on the Current in the μ-turn Coil to Capture Red Blood Cells

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