Improving the sensitivity of a high-Tc SQUID magnetometer with a serial array

Chiu Hsien Wu; K. L. Chen; J. C. Chen; M. J. Chen; C. Y. Chen; C. T. Chiang; Hong Chang Yang; Herng Er Horng; J. T. Jeng

Improving the sensitivity of a high-T_c SQUID magnetometer with a serial array

Chiu Hsien Wu^*
, K. L. Chen
, J. C. Chen
, M. J. Chen
, C. Y. Chen
, C. T. Chiang
, Hong Chang Yang
, Herng Er Horng
, J. T. Jeng

^*此作品的通信作者

光電工程研究所暨學士學位學程

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

5 引文斯高帕斯（Scopus）

摘要

To pursue a high-reproducibility and high-quality SQUID for high-T _c superconducting applications, we have designed and fabricated a flip-chip magnetometer as a sensor for measuring weak magnetic signals. The magnetometer consists of a serial SQUID magnetometer coupled to a flux focuser. The SQUIDs are connected in series, thereby increasing the peak-to-peak value of the voltage-flux transfer function, V_φ. A flux focuser is employed to increase the effective area of the SQUID. The serial SQUID array has high-quality device characteristics. High-T_c SQUID magnetometers exhibiting a magnetic field sensitivity of ∼45 fT/Hz^1/2 in the white region and 200 fT/Hz^1/2 at 1 Hz have been demonstrated in this work. The flip-chip SQUID magnetometer shows a sufficiently high sensitivity to record magnetocardiograms.

原文	英語
頁（從 - 到）	1109-1113
頁數	5
期刊	Journal of the Korean Physical Society
卷	48
發行號	5 I
出版狀態	已發佈 - 2006 5月

ASJC Scopus subject areas

一般物理與天文學

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引用此

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title = "Improving the sensitivity of a high-Tc SQUID magnetometer with a serial array",

abstract = "To pursue a high-reproducibility and high-quality SQUID for high-T c superconducting applications, we have designed and fabricated a flip-chip magnetometer as a sensor for measuring weak magnetic signals. The magnetometer consists of a serial SQUID magnetometer coupled to a flux focuser. The SQUIDs are connected in series, thereby increasing the peak-to-peak value of the voltage-flux transfer function, Vφ. A flux focuser is employed to increase the effective area of the SQUID. The serial SQUID array has high-quality device characteristics. High-Tc SQUID magnetometers exhibiting a magnetic field sensitivity of ∼45 fT/Hz1/2 in the white region and 200 fT/Hz1/2 at 1 Hz have been demonstrated in this work. The flip-chip SQUID magnetometer shows a sufficiently high sensitivity to record magnetocardiograms.",

keywords = "Flip-chip, Flux focuser, Serial SQUID",

author = "Wu, \{Chiu Hsien\} and Chen, \{K. L.\} and Chen, \{J. C.\} and Chen, \{M. J.\} and Chen, \{C. Y.\} and Chiang, \{C. T.\} and Yang, \{Hong Chang\} and Horng, \{Herng Er\} and Jeng, \{J. T.\}",

year = "2006",

month = may,

language = "English",

volume = "48",

pages = "1109--1113",

journal = "Journal of the Korean Physical Society",

issn = "0374-4884",

publisher = "Korean Physical Society",

number = "5 I",

}

TY - JOUR

T1 - Improving the sensitivity of a high-Tc SQUID magnetometer with a serial array

AU - Wu, Chiu Hsien

AU - Chen, K. L.

AU - Chen, J. C.

AU - Chen, M. J.

AU - Chen, C. Y.

AU - Chiang, C. T.

AU - Yang, Hong Chang

AU - Horng, Herng Er

AU - Jeng, J. T.

PY - 2006/5

Y1 - 2006/5

N2 - To pursue a high-reproducibility and high-quality SQUID for high-T c superconducting applications, we have designed and fabricated a flip-chip magnetometer as a sensor for measuring weak magnetic signals. The magnetometer consists of a serial SQUID magnetometer coupled to a flux focuser. The SQUIDs are connected in series, thereby increasing the peak-to-peak value of the voltage-flux transfer function, Vφ. A flux focuser is employed to increase the effective area of the SQUID. The serial SQUID array has high-quality device characteristics. High-Tc SQUID magnetometers exhibiting a magnetic field sensitivity of ∼45 fT/Hz1/2 in the white region and 200 fT/Hz1/2 at 1 Hz have been demonstrated in this work. The flip-chip SQUID magnetometer shows a sufficiently high sensitivity to record magnetocardiograms.

AB - To pursue a high-reproducibility and high-quality SQUID for high-T c superconducting applications, we have designed and fabricated a flip-chip magnetometer as a sensor for measuring weak magnetic signals. The magnetometer consists of a serial SQUID magnetometer coupled to a flux focuser. The SQUIDs are connected in series, thereby increasing the peak-to-peak value of the voltage-flux transfer function, Vφ. A flux focuser is employed to increase the effective area of the SQUID. The serial SQUID array has high-quality device characteristics. High-Tc SQUID magnetometers exhibiting a magnetic field sensitivity of ∼45 fT/Hz1/2 in the white region and 200 fT/Hz1/2 at 1 Hz have been demonstrated in this work. The flip-chip SQUID magnetometer shows a sufficiently high sensitivity to record magnetocardiograms.

KW - Flip-chip

KW - Flux focuser

KW - Serial SQUID

UR - https://www.scopus.com/pages/publications/33744970044

UR - https://www.scopus.com/pages/publications/33744970044#tab=citedBy

M3 - Article

AN - SCOPUS:33744970044

SN - 0374-4884

VL - 48

SP - 1109

EP - 1113

JO - Journal of the Korean Physical Society

JF - Journal of the Korean Physical Society

IS - 5 I

ER -

Improving the sensitivity of a high-Tc SQUID magnetometer with a serial array

摘要

ASJC Scopus subject areas

其它文件與鏈接

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引用此

Improving the sensitivity of a high-T_c SQUID magnetometer with a serial array