CA2017299A1 - Integrated-type squid magnetometer and system for biomagnetic measurements using the same - Google Patents

Integrated-type squid magnetometer and system for biomagnetic measurements using the same

Info

Publication number
CA2017299A1
CA2017299A1 CA2017299A CA2017299A CA2017299A1 CA 2017299 A1 CA2017299 A1 CA 2017299A1 CA 2017299 A CA2017299 A CA 2017299A CA 2017299 A CA2017299 A CA 2017299A CA 2017299 A1 CA2017299 A1 CA 2017299A1
Authority
CA
Canada
Prior art keywords
squid
magnetic shield
same
integrated
substrate
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.)
Granted
Application number
CA2017299A
Other languages
French (fr)
Other versions
CA2017299C (en
Inventor
Koichi Yokosawa
Hideaki Nakane
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of CA2017299A1 publication Critical patent/CA2017299A1/en
Application granted granted Critical
Publication of CA2017299C publication Critical patent/CA2017299C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01R33/035—Measuring direction or magnitude of magnetic fields or magnetic flux using superconductive devices
    • G01R33/0354—SQUIDS
    • G01R33/0358—SQUIDS coupling the flux to the SQUID
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S505/00—Superconductor technology: apparatus, material, process
    • Y10S505/825—Apparatus per se, device per se, or process of making or operating same
    • Y10S505/842—Measuring and testing
    • Y10S505/843—Electrical
    • Y10S505/845—Magnetometer
    • Y10S505/846—Magnetometer using superconductive quantum interference device, i.e. squid

Abstract

A pickup coil and a planar type SQUID are formed integrally on a single substrate to form a SQUID magnetometer. The SQUID is disposed on the surface of a projecting portion of the substrate and an insulating layer for spacing is laminated on the SQUID. The top, bottom and side surfaces of the assembly of the SQUID
and insulating layer covering the same are all covered with a superconducting layer to form a magnetic shield for enclosing the SQUID. The magnetic shield is remote from the planar type pickup coil disposed on the remaining portion of the substrate by a distance which is equal to or greater than a length of one side of the size of the magnetic shield, thereby preventing magnetic flux distortion due to the presence of the magnetic shield from distrubing coil balance of the pickup coil.
CA002017299A 1989-05-25 1990-05-22 Integrated-type squid magnetometer and system for biomagnetic measurements using the same Expired - Fee Related CA2017299C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1132413A JP2893714B2 (en) 1989-05-25 1989-05-25 Thin film type SQUID magnetometer and biomagnetism measuring device using the same
JP01-132413 1989-05-25

Publications (2)

Publication Number Publication Date
CA2017299A1 true CA2017299A1 (en) 1990-11-25
CA2017299C CA2017299C (en) 1998-12-01

Family

ID=15080808

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002017299A Expired - Fee Related CA2017299C (en) 1989-05-25 1990-05-22 Integrated-type squid magnetometer and system for biomagnetic measurements using the same

Country Status (5)

Country Link
US (1) US5166614A (en)
EP (1) EP0399499B1 (en)
JP (1) JP2893714B2 (en)
CA (1) CA2017299C (en)
DE (1) DE69019418T2 (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5506200A (en) * 1992-02-06 1996-04-09 Biomagnetic Technologies, Inc. Compact superconducting magnetometer having no vacuum insulation
FI89130C (en) * 1990-11-01 1993-08-25 Neuromag Oy LOCALIZATION SPEAKERS FOR ORDERING FOR DESTINATION VID INTERVALS FOR USING MAGNETOENKEPHALOGRAPHIC MAETNING
FI89131C (en) * 1990-12-21 1993-08-25 Neuromag Oy MAGNETOMETER DETECTOR OVER DERAS MONTAGE I EN FLORKANALIG ANORDNING FOER MAETNING AV MAENSKANS HJAERNFUNKTIONER ALSTRANDE MAGNETFAELT
FI89417C (en) * 1990-12-21 1993-09-27 Neuromag Oy DETECTOR SPEAKER FOR MAINTENANCE AV MAGNETFAELT
US5173660A (en) * 1990-12-26 1992-12-22 Biomagnetic Technologies, Inc. Packaged squid system with integral superconducting shielding layer
JP2764115B2 (en) † 1991-02-26 1998-06-11 セイコーインスツルメンツ株式会社 Manufacturing method of high sensitivity magnetic field detector
DE59107161D1 (en) * 1991-03-11 1996-02-08 Siemens Ag SQUID measuring device with shielding means
JPH05297089A (en) * 1992-04-20 1993-11-12 Sumitomo Electric Ind Ltd Magnetic sensor
DE4227877A1 (en) * 1992-08-22 1994-02-24 Philips Patentverwaltung Miniaturized SQUID module, especially for multi-channel magnetometers
JPH0817251B2 (en) * 1993-01-07 1996-02-21 株式会社超伝導センサ研究所 SQUID magnetometer
US5459399A (en) * 1994-06-08 1995-10-17 Otis Elevator Company Trap for preventing mixing of flux between adjacent indicia and being disposed adjacent first and second sensors
DE4433331C2 (en) * 1994-09-19 2002-06-20 Siemens Ag Magnetic field sensitive SQUID sensor device with flux transformer using high-T¶c¶ superconductor material
JPH08313609A (en) * 1995-05-22 1996-11-29 Seiko Instr Inc Radial differentiation type squid fluxmeter
JP3459506B2 (en) * 1995-11-17 2003-10-20 清水建設株式会社 Method for determining plasticity of steel
JP2909807B2 (en) * 1995-11-22 1999-06-23 セイコーインスツルメンツ株式会社 Superconducting quantum interference device magnetometer and non-destructive inspection device
JP2000091653A (en) * 1998-09-07 2000-03-31 Seiko Instruments Inc Superconducting quantum interference element
JP4695325B2 (en) * 2001-09-17 2011-06-08 キヤノン電子株式会社 Magnetic detection element, method of manufacturing the same, and portable device using the element
US7130675B2 (en) * 2002-06-28 2006-10-31 Tristan Technologies, Inc. High-resolution magnetoencephalography system and method
US7197352B2 (en) * 2002-08-26 2007-03-27 Tristan Technologies, Inc. High-resolution magnetoencephalography system, components and method
AU2003263757A1 (en) * 2002-08-26 2004-03-11 Tristan Technologies, Inc. High-resolution magnetoencephalography system and method
US7615385B2 (en) 2006-09-20 2009-11-10 Hypres, Inc Double-masking technique for increasing fabrication yield in superconducting electronics
JP5253926B2 (en) * 2008-08-22 2013-07-31 住友重機械工業株式会社 Magnetoencephalograph
US8571614B1 (en) 2009-10-12 2013-10-29 Hypres, Inc. Low-power biasing networks for superconducting integrated circuits
US10222416B1 (en) 2015-04-14 2019-03-05 Hypres, Inc. System and method for array diagnostics in superconducting integrated circuit
US11723579B2 (en) 2017-09-19 2023-08-15 Neuroenhancement Lab, LLC Method and apparatus for neuroenhancement
US11717686B2 (en) 2017-12-04 2023-08-08 Neuroenhancement Lab, LLC Method and apparatus for neuroenhancement to facilitate learning and performance
US11478603B2 (en) 2017-12-31 2022-10-25 Neuroenhancement Lab, LLC Method and apparatus for neuroenhancement to enhance emotional response
US11364361B2 (en) 2018-04-20 2022-06-21 Neuroenhancement Lab, LLC System and method for inducing sleep by transplanting mental states
CN113382683A (en) 2018-09-14 2021-09-10 纽罗因恒思蒙特实验有限责任公司 System and method for improving sleep
US11786694B2 (en) 2019-05-24 2023-10-17 NeuroLight, Inc. Device, method, and app for facilitating sleep

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3247585A1 (en) * 1982-12-22 1984-06-28 Siemens AG, 1000 Berlin und 8000 München MULTI-CHANNEL DEVICE FOR MEASURING DIFFERENT FIELD SOURCES OF LOW MAGNETIC FIELDS
DE3247543A1 (en) * 1982-12-22 1984-06-28 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR MULTI-CHANNEL MEASUREMENT OF LOW, CHANGING MAGNETIC FIELDS AND METHOD FOR THEIR PRODUCTION
EP0184670B1 (en) * 1984-11-19 1990-03-07 Siemens Aktiengesellschaft Production method of a superconductive gradiometer with a three-dimensional structure for the measurement of weak magnetic fields
DE3515237A1 (en) * 1985-04-26 1986-10-30 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR MEASURING WEAK MAGNETIC FIELDS WITH AT LEAST ONE DC SQUID
DE3515199A1 (en) * 1985-04-26 1986-11-06 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR MEASURING LOW MAGNETIC FIELDS WITH SEVERAL GRADIOMETERS
DE3769201D1 (en) * 1986-05-21 1991-05-16 Siemens Ag SQUID MAGNETOMETER FOR A DEVICE FOR MEASURING LOW MAGNETIC FIELDS.
JP2749048B2 (en) * 1988-02-05 1998-05-13 株式会社日立製作所 Superconducting quantum interferometer

Also Published As

Publication number Publication date
EP0399499A3 (en) 1991-06-05
DE69019418D1 (en) 1995-06-22
US5166614A (en) 1992-11-24
EP0399499B1 (en) 1995-05-17
JP2893714B2 (en) 1999-05-24
DE69019418T2 (en) 1996-01-25
JPH02310484A (en) 1990-12-26
EP0399499A2 (en) 1990-11-28
CA2017299C (en) 1998-12-01

Similar Documents

Publication Publication Date Title
CA2017299A1 (en) Integrated-type squid magnetometer and system for biomagnetic measurements using the same
EP0360978A3 (en) A thin film magnetic head for perpendicular recording and reproducing
AU532796B2 (en) Magnetic tape having epoxy subbing layer
GB2163409B (en) Magnetic tape cassette
JPS57189320A (en) Thin film magnetic head
GB8827918D0 (en) Magnetic field shield including superconductive film
EP0284196A3 (en) Magnetometer
CA2020302A1 (en) Substrate having a superconductor layer
GB8508423D0 (en) Nuclear magnetic resonance spectrometry
GB8523539D0 (en) Magnetic tape cassette
GB2165819B (en) Magnetic tape cassette
GB8520385D0 (en) Magnetic tape cassettes
GB2157265B (en) Magnetic tape cassette
JPS6319272U (en)
JPH0261812A (en) Thin film magnetic head
JPS57167115A (en) Magnetoresistance head
GB8512590D0 (en) Nuclear magnetic resonance spectrometry
Higaki et al. Substrate Having a Superconductor Layer
JPS6482312A (en) Composite type thin film magnetic head
JPS6425497A (en) Inductance element
JPH0336314B2 (en)
JPS57203217A (en) Thin film magnetic head
JPS6417447A (en) Semiconductor device
GB2168033B (en) Magnetic tape cassette
GB2154545B (en) Magnetic tape cassette

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed