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Experimental study on optical fiber bundle hydrogen sensor based on palladium-silver optical thin film

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Abstract

In this paper, a 20 nm palladium-silver (Pd/Ag) ultrathin optical film is used for hydrogen gas sensing. The mole ratio of the two metals is controlled at Pd:Ag=3:1. In the direct current (DC) sputtering machine, the optical thin film is evaporated on the optical glass. Compared with pure palladium, the Pd/Ag alloy can increase the life and the stability of the sensing film. Optimum sputtering parameters for Pd/Ag alloy are presented in this paper, and the effects of different experimental conditions for hydrogen sensor are investigated, including the temperature effect, humidity effect and cross sensitivity of hydrogen sensor for different gases. The experiment results indicate that the hydrogen sensor based on Pd/Ag optical thin film exhibits good sensing characteristics. The existing of CO and water in hydrogen increases the response time and decreases the response amplitude of optical fiber bundle hydrogen sensor. The experiment results show that the increasing temperature can eliminate the effect and shorten hydrogen sensor response time effectively.

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Authors and Affiliations

  1. School of Mechanical & Electronic Engineering, Zhongyuan University of Technology, Zhengzhou, 450007, China

    Lu-jun Cui  (崔陆军), Hui-chao Shang  (尚会超), Gang Zhang  (张冈), Yong Li  (李勇) & Ze-xiang Zhao  (赵则祥)

Authors
  1. Lu-jun Cui  (崔陆军)
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  2. Hui-chao Shang  (尚会超)
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  3. Gang Zhang  (张冈)
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  4. Yong Li  (李勇)
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  5. Ze-xiang Zhao  (赵则祥)
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Corresponding author

Correspondence to Lu-jun Cui  (崔陆军).

Additional information

This work has been supported by the National Natural Science Foundation of China (No.50974062), the Basic and Frontier Technology Research Project of Henan Province (Nos.082300410320 and 122300410321), and the Scientific Research Program of Department of Education of Henan Province (No.2008B520044).

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Cui, Lj., Shang, Hc., Zhang, G. et al. Experimental study on optical fiber bundle hydrogen sensor based on palladium-silver optical thin film. Optoelectron. Lett. 9, 13–17 (2013). https://doi.org/10.1007/s11801-013-2301-6

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  • DOI: https://doi.org/10.1007/s11801-013-2301-6

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