Planar Hall ring sensor for ultra-low magnetic moment sensing

Tran Quang Hung; Ferial Terki; Souleymanne Kamara; Kunwoo Kim; Salam Charar; CheolGi Kim

doi:10.1063/1.4918534

Planar Hall ring sensor for ultra-low magnetic moment sensing

Tran Quang Hung, Ferial Terki, Souleymanne Kamara, Kunwoo Kim, Salam Charar, CheolGi Kim

National Food Institute

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The field sensitivity of a planar Hall effect (PHE) micro-ring type biosensor has been investigated as a function of magnetizing angle of the sensor material, for the sensing of low magnetic moment superparamagnetic labels. The field sensitivity is maximal at a magnetizing angle of α = 20°. At this optimized magnetizing angle, the field sensitivity of a PHE sensor is about 3.6 times higher than that measured at the conventional configuration, α = 90°. This optimization enables the PHE-ring sensor to detect superparamagnetic biolabels with ultra-low magnetic moments down to 4 × 10-13 emu.

Original language	English
Journal	Journal of Applied Physics
Volume	117
Issue number	15
Pages (from-to)	154505
Number of pages	1
ISSN	0021-8979
DOIs	https://doi.org/10.1063/1.4918534
Publication status	Published - 2015

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title = "Planar Hall ring sensor for ultra-low magnetic moment sensing",

abstract = "The field sensitivity of a planar Hall effect (PHE) micro-ring type biosensor has been investigated as a function of magnetizing angle of the sensor material, for the sensing of low magnetic moment superparamagnetic labels. The field sensitivity is maximal at a magnetizing angle of α = 20°. At this optimized magnetizing angle, the field sensitivity of a PHE sensor is about 3.6 times higher than that measured at the conventional configuration, α = 90°. This optimization enables the PHE-ring sensor to detect superparamagnetic biolabels with ultra-low magnetic moments down to 4 × 10-13 emu.",

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AU - Hung, Tran Quang

AU - Terki, Ferial

AU - Kamara, Souleymanne

AU - Kim, Kunwoo

AU - Charar, Salam

AU - Kim, CheolGi

PY - 2015

Y1 - 2015

N2 - The field sensitivity of a planar Hall effect (PHE) micro-ring type biosensor has been investigated as a function of magnetizing angle of the sensor material, for the sensing of low magnetic moment superparamagnetic labels. The field sensitivity is maximal at a magnetizing angle of α = 20°. At this optimized magnetizing angle, the field sensitivity of a PHE sensor is about 3.6 times higher than that measured at the conventional configuration, α = 90°. This optimization enables the PHE-ring sensor to detect superparamagnetic biolabels with ultra-low magnetic moments down to 4 × 10-13 emu.

AB - The field sensitivity of a planar Hall effect (PHE) micro-ring type biosensor has been investigated as a function of magnetizing angle of the sensor material, for the sensing of low magnetic moment superparamagnetic labels. The field sensitivity is maximal at a magnetizing angle of α = 20°. At this optimized magnetizing angle, the field sensitivity of a PHE sensor is about 3.6 times higher than that measured at the conventional configuration, α = 90°. This optimization enables the PHE-ring sensor to detect superparamagnetic biolabels with ultra-low magnetic moments down to 4 × 10-13 emu.

U2 - 10.1063/1.4918534

DO - 10.1063/1.4918534

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JO - Journal of Applied Physics

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ER -

Planar Hall ring sensor for ultra-low magnetic moment sensing

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