Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise

Dantsker, Eugene; Clarke, John

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Title: Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise

Abstract

An asymmetric planar gradiometer for use in making biomagnetic measurements. The gradiometer is formed from a magnetometer which is inductively-coupled to the smaller of two connected loops patterned in a superconducting film which form a flux transformer. The magnetometer is based on a SQUID formed from a high T.sub.c superconducting material. The flux transformer and magnetometer may be formed on separate substrates, allowing the baseline to be increased relative to presently available devices.

Inventors:

Dantsker, Eugene ^[1]; Clarke, John ^[2]

Torrance, CA
Berkeley, CA

Issue Date:: Sat Jan 01 00:00:00 EST 2000

Research Org.:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

OSTI Identifier:: 873416

Patent Number(s):: 6154026

Assignee:: Regents of University of California (Oakland, CA)

Patent Classifications (CPCs):: G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

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G - PHYSICS G01 - MEASURING G01R - MEASURING ELECTRIC VARIABLES
G01R33/022 - Measuring gradient
G01R33/0358 - {coupling the flux to the SQUID

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S505/846 - using superconductive quantum interference device, i.e. squid

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DOE Contract Number:: AC03-76SF00098

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: asymmetric; planar; gradiometer; rejection; uniform; ambient; magnetic; noise; biomagnetic; measurements; formed; magnetometer; inductively-coupled; connected; loops; patterned; superconducting; film; form; flux; transformer; based; squid; material; separate; substrates; allowing; baseline; increased; relative; presently; available; devices; ambient magnetic; superconducting film; conducting material; superconducting material; conducting film; magnetic noise; planar gradiometer; asymmetric planar; /324/505/

Citation Formats


                    Dantsker, Eugene, and Clarke, John. Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise.  United States: N. p., 2000. 
        Web.

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                    Dantsker, Eugene, & Clarke, John. Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise.  United States.

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                    Dantsker, Eugene, and Clarke, John. Sat .  
        "Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise".  United States.  https://www.osti.gov/servlets/purl/873416.

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@article{osti_873416,

  title        = {Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise},

  author       = {Dantsker, Eugene and Clarke, John},

  abstractNote = {An asymmetric planar gradiometer for use in making biomagnetic measurements. The gradiometer is formed from a magnetometer which is inductively-coupled to the smaller of two connected loops patterned in a superconducting film which form a flux transformer. The magnetometer is based on a SQUID formed from a high T.sub.c superconducting material. The flux transformer and magnetometer may be formed on separate substrates, allowing the baseline to be increased relative to presently available devices.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Sat Jan 01 00:00:00 EST 2000},

  month        = {Sat Jan 01 00:00:00 EST 2000}

}

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Works referenced in this record:

Dc-SQUID magnetometers and gradiometers on the basis of quasiplanar ramp-type Josephson junctions
journal, June 1997

Faley, M. I.; Poppe, U.; Urban, K.
IEEE Transactions on Appiled Superconductivity, Vol. 7, Issue 2
https://doi.org/10.1109/77.622222

Single layer YBaCuO-gradiometer
journal, June 1995

Daalmans, G. M.; Bar, L.; Kuhnl, M.
IEEE Transactions on Appiled Superconductivity, Vol. 5, Issue 2
https://doi.org/10.1109/77.403250

SQUID instruments and shielding for low‐level magnetic measurements
journal, February 1977

Zimmerman, James E.
Journal of Applied Physics, Vol. 48, Issue 2
https://doi.org/10.1063/1.323659

Three SQUID gradiometer
journal, July 1993

Koch, R. H.; Rozen, J. R.; Sun, J. Z.
Applied Physics Letters, Vol. 63, Issue 3
https://doi.org/10.1063/1.110032

YBa ₂ Cu ₃ O _7−δ thin‐film gradiometers: Fabrication and performance
journal, December 1991

Eidelloth, W.; Oh, B.; Robertazzi, R. P.
Applied Physics Letters, Vol. 59, Issue 26
https://doi.org/10.1063/1.105657

dc SQUID magnetometers from single layers of YBa ₂ Cu ₃ O _{7− x}
journal, October 1993

Koelle, D.; Miklich, A. H.; Ludwig, F.
Applied Physics Letters, Vol. 63, Issue 16
https://doi.org/10.1063/1.110526

Squid Fundamentals
book, January 1996

Clarke, John; Weinstock, Harold
SQUID Sensors: Fundamentals, Fabrication and Applications, p. 1-62
https://doi.org/10.1007/978-94-011-5674-5_1

Integrated SQUID gradiometers for measurement in disturbed environments
journal, June 1997

Schultze, V.; Stolz, R.; Ijsselsteijn, R.
IEEE Transactions on Appiled Superconductivity, Vol. 7, Issue 2
https://doi.org/10.1109/77.622141

A YBa/sub 2/Cu/sub 3/O/sub 7/ thin film SQUID gradiometer for measurements in unshielded space
journal, March 1993

Tavrin, Y.; Zhang, Y.; Muck, M.
IEEE Transactions on Applied Superconductivity, Vol. 3, Issue 1
https://doi.org/10.1109/77.233958

High performance dc SQUID magnetometers with single layer YBa ₂ Cu ₃ O _{7− x} flux transformers
journal, December 1993

Koelle, D.; Miklich, A. H.; Dantsker, E.
Applied Physics Letters, Vol. 63, Issue 26
https://doi.org/10.1063/1.110071

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Similar Records

Title: Asymmetric planar gradiometer for rejection of uniform ambient magnetic noise

Abstract

Citation Formats

Dc-SQUID magnetometers and gradiometers on the basis of quasiplanar ramp-type Josephson junctions journal, June 1997

Single layer YBaCuO-gradiometer journal, June 1995

SQUID instruments and shielding for low‐level magnetic measurements journal, February 1977

Three SQUID gradiometer journal, July 1993

YBa 2 Cu 3 O 7−δ thin‐film gradiometers: Fabrication and performance journal, December 1991

dc SQUID magnetometers from single layers of YBa 2 Cu 3 O 7− x journal, October 1993

Squid Fundamentals book, January 1996

Integrated SQUID gradiometers for measurement in disturbed environments journal, June 1997

A YBa/sub 2/Cu/sub 3/O/sub 7/ thin film SQUID gradiometer for measurements in unshielded space journal, March 1993

High performance dc SQUID magnetometers with single layer YBa 2 Cu 3 O 7− x flux transformers journal, December 1993

Dc-SQUID magnetometers and gradiometers on the basis of quasiplanar ramp-type Josephson junctions
journal, June 1997

Single layer YBaCuO-gradiometer
journal, June 1995

SQUID instruments and shielding for low‐level magnetic measurements
journal, February 1977

Three SQUID gradiometer
journal, July 1993

YBa ₂ Cu ₃ O _7−δ thin‐film gradiometers: Fabrication and performance
journal, December 1991

dc SQUID magnetometers from single layers of YBa ₂ Cu ₃ O _{7− x}
journal, October 1993

Squid Fundamentals
book, January 1996

Integrated SQUID gradiometers for measurement in disturbed environments
journal, June 1997

A YBa/sub 2/Cu/sub 3/O/sub 7/ thin film SQUID gradiometer for measurements in unshielded space
journal, March 1993

High performance dc SQUID magnetometers with single layer YBa ₂ Cu ₃ O _{7− x} flux transformers
journal, December 1993