We demonstrated the application of CoPd magnetic devices in single (H2) and dual (H2 and CO) gas detection by varying the thin-film structure. The anomalous Hall effect provided the read-out signal of the devices. The dual-gas sensor was particularly useful for examining whether methane reformation by steam was completed during H2 production where CO is a byproduct. Through in situ Fourier transform infrared and X-ray absorption spectroscopy, we discovered that H2 detection involved a charge-transfer effect between Co and Pd in addition to a surface-adsorption process, for both multilayer and alloy structures; however, CO detection was solely associated with a surface-adsorption process, which only occurred in the alloy structure. The proposed devices demonstrated performances exceeding those of current commercial models (solid-state based) regarding power consumption (<5 mW) because they were not required to undergo a heating process. An Arduino prototype platform was employed to test the modularization of the device, and adequate feasibility was demonstrated.
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29 October 2018
Research Article|
October 29 2018
Realization of an H2/CO dual-gas sensor using CoPd magnetic structures
Jaw-Yeu Liang;
Jaw-Yeu Liang
1
Graduate Degree Program of Science and Technology of Accelerator Light Source, National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
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Yu-Jun Chou;
Yu-Jun Chou
2
Department of Materials Science and Engineering, National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
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Chiao-Wen Yin;
Chiao-Wen Yin
2
Department of Materials Science and Engineering, National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
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Wen-Chin Lin;
Wen-Chin Lin
3
Department of Physics, National Taiwan Normal University
, 88 Ting Chou Road, Taipei 11677, Taiwan
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Hong-Ji Lin;
Hong-Ji Lin
4
National Synchrotron Radiation Research Center
, 101 Hsin Ann Road, Hsinchu 30076, Taiwan
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Po-Wen Chen
;
Po-Wen Chen
5
Physics Division, Institute of Nuclear Energy Research
, 1000 Wen Hua Road, Taoyuan 32546, Taiwan
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Yuan-Chieh Tseng
Yuan-Chieh Tseng
a)
1
Graduate Degree Program of Science and Technology of Accelerator Light Source, National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
2
Department of Materials Science and Engineering, National Chiao Tung University
, 1001 Ta Hsueh Road, Hsinchu 30010, Taiwan
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Appl. Phys. Lett. 113, 182401 (2018)
Article history
Received:
August 20 2018
Accepted:
October 14 2018
Citation
Jaw-Yeu Liang, Yu-Jun Chou, Chiao-Wen Yin, Wen-Chin Lin, Hong-Ji Lin, Po-Wen Chen, Yuan-Chieh Tseng; Realization of an H2/CO dual-gas sensor using CoPd magnetic structures. Appl. Phys. Lett. 29 October 2018; 113 (18): 182401. https://doi.org/10.1063/1.5052666
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