Submicrometer hall sensors for superparamagnetic nanoparticle detection

Goran Mihajlović; Peng Xiong; Stephan Von Molnár; Mark Field; Gerard J. Sullivan; Keita Ohtani; Hideo Ohno

doi:10.1109/TMAG.2007.893123

Submicrometer hall sensors for superparamagnetic nanoparticle detection

Goran Mihajlović, Peng Xiong, Stephan Von Molnár, Mark Field, Gerard J. Sullivan, Keita Ohtani, Hideo Ohno

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Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Submicrometer Hall sensors, with Hall cross width of ∼250 nm, were fabricated from InAs/AlSb quantum well semiconductor heterostructures. The room-temperature device characteristics were examined by experimental Hall effect and electronic noise measurements combined with analytical calculations. The noise-equivalent magnetic moment resolution of the order of 10 ⁴_μB/√Hz was obtained at frequencies above ∼1 kHz. We show that the devices can achieve single superparamagnetic nanoparticle detection and thus be employed in experiments involving single magnetically labeled biomolecule detection.

Original language	English
Pages (from-to)	2400-2402
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	43
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2007.893123
Publication status	Published - 2007 Jun

Keywords

Biodetection
InAs quantum well
Magnetic nanoparticles
Submicrometer Hall sensor

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2007.893123

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title = "Submicrometer hall sensors for superparamagnetic nanoparticle detection",

abstract = "Submicrometer Hall sensors, with Hall cross width of ∼250 nm, were fabricated from InAs/AlSb quantum well semiconductor heterostructures. The room-temperature device characteristics were examined by experimental Hall effect and electronic noise measurements combined with analytical calculations. The noise-equivalent magnetic moment resolution of the order of 10 4μB/√Hz was obtained at frequencies above ∼1 kHz. We show that the devices can achieve single superparamagnetic nanoparticle detection and thus be employed in experiments involving single magnetically labeled biomolecule detection.",

keywords = "Biodetection, InAs quantum well, Magnetic nanoparticles, Submicrometer Hall sensor",

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note = "Funding Information: This work was supported by the NSF under NIRT Grant ECS-0210332.",

year = "2007",

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doi = "10.1109/TMAG.2007.893123",

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T1 - Submicrometer hall sensors for superparamagnetic nanoparticle detection

AU - Mihajlović, Goran

AU - Xiong, Peng

AU - Von Molnár, Stephan

AU - Field, Mark

AU - Sullivan, Gerard J.

AU - Ohtani, Keita

AU - Ohno, Hideo

N1 - Funding Information: This work was supported by the NSF under NIRT Grant ECS-0210332.

PY - 2007/6

Y1 - 2007/6

N2 - Submicrometer Hall sensors, with Hall cross width of ∼250 nm, were fabricated from InAs/AlSb quantum well semiconductor heterostructures. The room-temperature device characteristics were examined by experimental Hall effect and electronic noise measurements combined with analytical calculations. The noise-equivalent magnetic moment resolution of the order of 10 4μB/√Hz was obtained at frequencies above ∼1 kHz. We show that the devices can achieve single superparamagnetic nanoparticle detection and thus be employed in experiments involving single magnetically labeled biomolecule detection.

AB - Submicrometer Hall sensors, with Hall cross width of ∼250 nm, were fabricated from InAs/AlSb quantum well semiconductor heterostructures. The room-temperature device characteristics were examined by experimental Hall effect and electronic noise measurements combined with analytical calculations. The noise-equivalent magnetic moment resolution of the order of 10 4μB/√Hz was obtained at frequencies above ∼1 kHz. We show that the devices can achieve single superparamagnetic nanoparticle detection and thus be employed in experiments involving single magnetically labeled biomolecule detection.

KW - Biodetection

KW - InAs quantum well

KW - Magnetic nanoparticles

KW - Submicrometer Hall sensor

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Submicrometer hall sensors for superparamagnetic nanoparticle detection

Abstract

Keywords

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