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WO2008044162A3 - Magnetic sensor device with pairs of detection units - Google Patents

Magnetic sensor device with pairs of detection units Download PDF

Info

Publication number
WO2008044162A3
WO2008044162A3 PCT/IB2007/053944 IB2007053944W WO2008044162A3 WO 2008044162 A3 WO2008044162 A3 WO 2008044162A3 IB 2007053944 W IB2007053944 W IB 2007053944W WO 2008044162 A3 WO2008044162 A3 WO 2008044162A3
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic sensor
elements
sensor device
detection units
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2007/053944
Other languages
French (fr)
Other versions
WO2008044162A2 (en
Inventor
Haris Duric
Josephus Arnoldus Henr Kahlman
Pieter G Blanken
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to EP07826574A priority Critical patent/EP2082231A2/en
Priority to JP2009530982A priority patent/JP2010521649A/en
Publication of WO2008044162A2 publication Critical patent/WO2008044162A2/en
Publication of WO2008044162A3 publication Critical patent/WO2008044162A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
    • G01R33/1269—Measuring magnetic properties of articles or specimens of solids or fluids of molecules labeled with magnetic beads

Landscapes

  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Measuring Magnetic Variables (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

The invention relates to a magnetic sensor device (100) with a primary and secondary detection unit (P, S), each of which comprises a magnetic sensor element and a magnetic field generator. In a preferred embodiment, the magnetic sensor elements are GMR elements (12, 22) with the same sensitive directions (D12, D22), and the magnetic field generators are parallel wires (11, 21) which are supplied by an evaluation and control unit (40) with anti-parallel magnetic excitation currents. The magnetic excitation currents generate magnetic excitation fields (Bn, B2i) with opposite sense of rotation which in turn induce oppositely directed magnetic reaction fields (B'11, B'21) in magnetized particles (1) provided in an investigation region (2). The magnetic reaction fields (B'11, B'21) therefore have opposite effects on the GMR elements, yielding an increase in the difference (Δ) between the output signals of these elements. In a preferred embodiment, four detection units are arranged in a Wheatstone bridge.
PCT/IB2007/053944 2006-10-09 2007-09-28 Magnetic sensor device with pairs of detection units Ceased WO2008044162A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07826574A EP2082231A2 (en) 2006-10-09 2007-09-28 Magnetic sensor device with pairs of detection units
JP2009530982A JP2010521649A (en) 2006-10-09 2007-09-28 Magnetic sensor device having a pair of detection units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06121980.4 2006-10-09
EP06121980 2006-10-09

Publications (2)

Publication Number Publication Date
WO2008044162A2 WO2008044162A2 (en) 2008-04-17
WO2008044162A3 true WO2008044162A3 (en) 2008-07-17

Family

ID=39283255

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/053944 Ceased WO2008044162A2 (en) 2006-10-09 2007-09-28 Magnetic sensor device with pairs of detection units

Country Status (4)

Country Link
EP (1) EP2082231A2 (en)
JP (1) JP2010521649A (en)
CN (1) CN101523214A (en)
WO (1) WO2008044162A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9272290B2 (en) 2009-07-17 2016-03-01 Koninklijke Philips N.V. Apparatus for the enrichment of magnetic particles
EP2330432B1 (en) * 2009-11-19 2013-01-09 Nxp B.V. Magnetic field sensor
WO2012026255A1 (en) * 2010-08-23 2012-03-01 アルプス・グリーンデバイス株式会社 Magnetic-balance current sensor
ES2608930T3 (en) 2012-01-04 2017-04-17 Magnomics, S.A. Monolithic device that combines CMOS with magnetoresistive sensors
JP6285641B2 (en) * 2013-05-10 2018-02-28 旭化成エレクトロニクス株式会社 Magnetic sensor and magnetic field component calculation method
CN105574982B (en) * 2016-01-12 2018-09-25 深圳粤宝电子科技有限公司 A kind of reading chinaware of wound core full bridge structure
CN107796865B (en) 2016-09-05 2021-05-25 财团法人工业技术研究院 Biomolecular Magnetic Sensors
CN112650406A (en) * 2019-10-10 2021-04-13 北京小米移动软件有限公司 Electronic device and electronic device protection system
CN112345624A (en) * 2020-10-27 2021-02-09 北京信息科技大学 A high-sensitivity metal wear particle detection sensor based on giant magnetoresistance effect

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5981297A (en) * 1997-02-05 1999-11-09 The United States Of America As Represented By The Secretary Of The Navy Biosensor using magnetically-detected label
WO2003054523A2 (en) * 2001-12-21 2003-07-03 Koninklijke Philips Electronics N.V. Sensor and method for measuring the areal density of magnetic nanoparticles on a micro-array
WO2003054566A1 (en) * 2001-12-21 2003-07-03 Koninklijke Philips Electronics N.V. Magnetoresistive sensing device, system and method for determining a density of magnetic particles in fluid
WO2005010543A1 (en) * 2003-07-30 2005-02-03 Koninklijke Philips Electronics N.V. On-chip magnetic sensor device with suppressed cross-talk
WO2005010542A2 (en) * 2003-07-30 2005-02-03 Koninklijke Philips Electronics N.V. On-chip magnetic particle sensor with improved snr
WO2005010503A1 (en) * 2003-07-30 2005-02-03 Koninklijke Philips Electronics N.V. Integrated 1/f noise removal method for a magneto-resistive nano-particle sensor
WO2005111596A1 (en) * 2004-05-18 2005-11-24 Koninklijke Philips Electronics N.V. Magnetic rotation to improve signal-over-background in biosensing
WO2005116661A1 (en) * 2004-05-24 2005-12-08 Koninklijke Philips Electronics N.V. Magneto-resistive sensor for high sensitivity depth probing
WO2006018811A1 (en) * 2004-08-20 2006-02-23 Instituto De Engenharia De Sistemas E Computadores Para Os Microsistemas E As Nanotecnologias (Inesc-Mn) A bio-electronic device
WO2007129284A1 (en) * 2006-05-10 2007-11-15 Koninklijke Philips Electronics N.V. System and methods for actuation on magnetoresistive sensors
WO2007132366A2 (en) * 2006-05-09 2007-11-22 Koninklijke Philips Electronics N. V. Microelectronic sensor device for concentration measurements
EP1884763A2 (en) * 2006-08-01 2008-02-06 MagIC Technologies Inc. GMR biosensor with enhanced sensivity
WO2008017970A2 (en) * 2006-08-09 2008-02-14 Koninklijke Philips Electronics N. V. Magnetic sensor device on a microchip

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5981297A (en) * 1997-02-05 1999-11-09 The United States Of America As Represented By The Secretary Of The Navy Biosensor using magnetically-detected label
WO2003054523A2 (en) * 2001-12-21 2003-07-03 Koninklijke Philips Electronics N.V. Sensor and method for measuring the areal density of magnetic nanoparticles on a micro-array
WO2003054566A1 (en) * 2001-12-21 2003-07-03 Koninklijke Philips Electronics N.V. Magnetoresistive sensing device, system and method for determining a density of magnetic particles in fluid
WO2005010543A1 (en) * 2003-07-30 2005-02-03 Koninklijke Philips Electronics N.V. On-chip magnetic sensor device with suppressed cross-talk
WO2005010542A2 (en) * 2003-07-30 2005-02-03 Koninklijke Philips Electronics N.V. On-chip magnetic particle sensor with improved snr
WO2005010503A1 (en) * 2003-07-30 2005-02-03 Koninklijke Philips Electronics N.V. Integrated 1/f noise removal method for a magneto-resistive nano-particle sensor
WO2005111596A1 (en) * 2004-05-18 2005-11-24 Koninklijke Philips Electronics N.V. Magnetic rotation to improve signal-over-background in biosensing
WO2005116661A1 (en) * 2004-05-24 2005-12-08 Koninklijke Philips Electronics N.V. Magneto-resistive sensor for high sensitivity depth probing
WO2006018811A1 (en) * 2004-08-20 2006-02-23 Instituto De Engenharia De Sistemas E Computadores Para Os Microsistemas E As Nanotecnologias (Inesc-Mn) A bio-electronic device
WO2007132366A2 (en) * 2006-05-09 2007-11-22 Koninklijke Philips Electronics N. V. Microelectronic sensor device for concentration measurements
WO2007129284A1 (en) * 2006-05-10 2007-11-15 Koninklijke Philips Electronics N.V. System and methods for actuation on magnetoresistive sensors
EP1884763A2 (en) * 2006-08-01 2008-02-06 MagIC Technologies Inc. GMR biosensor with enhanced sensivity
WO2008017970A2 (en) * 2006-08-09 2008-02-14 Koninklijke Philips Electronics N. V. Magnetic sensor device on a microchip

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SMITH C H ET AL: "High-Resolution, Chip-Size Magnetic Sensor Arrays", INTERNET CITATION, XP002300944, Retrieved from the Internet <URL:www.sensorsmag.com/articles/0303/44/main.shtml> [retrieved on 20041015] *

Also Published As

Publication number Publication date
EP2082231A2 (en) 2009-07-29
JP2010521649A (en) 2010-06-24
CN101523214A (en) 2009-09-02
WO2008044162A2 (en) 2008-04-17

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