A signal input coil made of superconducting thin film for improved signal-to-noise ratio in a high-Tc SQUID-based ultra-low field nuclear magnetic resonance system

Kuen Lin Chen; Chin Wei Hsu; Yue Bai Ku; Hsin Hsien Chen; Shu Hsien Liao; Li Min Wang; Herng Er Horng; Hong Chang Yang

doi:10.1088/0953-2048/26/11/115008

A signal input coil made of superconducting thin film for improved signal-to-noise ratio in a high-T_c SQUID-based ultra-low field nuclear magnetic resonance system

Kuen Lin Chen, Chin Wei Hsu, Yue Bai Ku, Hsin Hsien Chen, Shu Hsien Liao, Li Min Wang, Herng Er Horng, Hong Chang Yang

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

1 Citation (Scopus)

Abstract

Resonant coupling schemes are commonly used in SQUID-based ultra-low field (ULF) nuclear magnetic resonance (NMR) systems to couple the spin relaxation signals from samples to the SQUID. Generally, in NMR systems, a resonant coupling scheme is composed of two solenoid coils which are made of enamel insulated wires and a capacitor connected in series. In this work, we tried to replace the metal solenoid input coil with a planar high-T_c superconducting spiral coil to improve the signal-to-noise ratio (SNR) of the ULF NMR signal. A measurement of the free induction decay signal of water protons was performed to demonstrate the improved performance of the system. This improvement is due to the fact that the planar superconducting spiral coil possesses a higher mutual inductance with the SQUID. Therefore, it is a promising way to enhance the SNR of high-T_c SQUID-based ULF NMR/MRI systems.

Original language	English
Article number	115008
Journal	Superconductor Science and Technology
Volume	26
Issue number	11
DOIs	https://doi.org/10.1088/0953-2048/26/11/115008
Publication status	Published - 2013 Nov

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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Chen, K. L., Hsu, C. W., Ku, Y. B., Chen, H. H., Liao, S. H., Wang, L. M., Horng, H. E., & Yang, H. C. (2013). A signal input coil made of superconducting thin film for improved signal-to-noise ratio in a high-T_c SQUID-based ultra-low field nuclear magnetic resonance system. Superconductor Science and Technology, 26(11), Article 115008. https://doi.org/10.1088/0953-2048/26/11/115008

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title = "A signal input coil made of superconducting thin film for improved signal-to-noise ratio in a high-Tc SQUID-based ultra-low field nuclear magnetic resonance system",

abstract = "Resonant coupling schemes are commonly used in SQUID-based ultra-low field (ULF) nuclear magnetic resonance (NMR) systems to couple the spin relaxation signals from samples to the SQUID. Generally, in NMR systems, a resonant coupling scheme is composed of two solenoid coils which are made of enamel insulated wires and a capacitor connected in series. In this work, we tried to replace the metal solenoid input coil with a planar high-Tc superconducting spiral coil to improve the signal-to-noise ratio (SNR) of the ULF NMR signal. A measurement of the free induction decay signal of water protons was performed to demonstrate the improved performance of the system. This improvement is due to the fact that the planar superconducting spiral coil possesses a higher mutual inductance with the SQUID. Therefore, it is a promising way to enhance the SNR of high-Tc SQUID-based ULF NMR/MRI systems.",

author = "Chen, {Kuen Lin} and Hsu, {Chin Wei} and Ku, {Yue Bai} and Chen, {Hsin Hsien} and Liao, {Shu Hsien} and Wang, {Li Min} and Horng, {Herng Er} and Yang, {Hong Chang}",

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doi = "10.1088/0953-2048/26/11/115008",

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T1 - A signal input coil made of superconducting thin film for improved signal-to-noise ratio in a high-Tc SQUID-based ultra-low field nuclear magnetic resonance system

AU - Chen, Kuen Lin

AU - Hsu, Chin Wei

AU - Ku, Yue Bai

AU - Chen, Hsin Hsien

AU - Liao, Shu Hsien

AU - Wang, Li Min

AU - Horng, Herng Er

AU - Yang, Hong Chang

PY - 2013/11

Y1 - 2013/11

N2 - Resonant coupling schemes are commonly used in SQUID-based ultra-low field (ULF) nuclear magnetic resonance (NMR) systems to couple the spin relaxation signals from samples to the SQUID. Generally, in NMR systems, a resonant coupling scheme is composed of two solenoid coils which are made of enamel insulated wires and a capacitor connected in series. In this work, we tried to replace the metal solenoid input coil with a planar high-Tc superconducting spiral coil to improve the signal-to-noise ratio (SNR) of the ULF NMR signal. A measurement of the free induction decay signal of water protons was performed to demonstrate the improved performance of the system. This improvement is due to the fact that the planar superconducting spiral coil possesses a higher mutual inductance with the SQUID. Therefore, it is a promising way to enhance the SNR of high-Tc SQUID-based ULF NMR/MRI systems.

AB - Resonant coupling schemes are commonly used in SQUID-based ultra-low field (ULF) nuclear magnetic resonance (NMR) systems to couple the spin relaxation signals from samples to the SQUID. Generally, in NMR systems, a resonant coupling scheme is composed of two solenoid coils which are made of enamel insulated wires and a capacitor connected in series. In this work, we tried to replace the metal solenoid input coil with a planar high-Tc superconducting spiral coil to improve the signal-to-noise ratio (SNR) of the ULF NMR signal. A measurement of the free induction decay signal of water protons was performed to demonstrate the improved performance of the system. This improvement is due to the fact that the planar superconducting spiral coil possesses a higher mutual inductance with the SQUID. Therefore, it is a promising way to enhance the SNR of high-Tc SQUID-based ULF NMR/MRI systems.

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A signal input coil made of superconducting thin film for improved signal-to-noise ratio in a high-T_c SQUID-based ultra-low field nuclear magnetic resonance system

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