5 September 2014 Eye readable metal hydride based hydrogen tape sensor for health applications
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Abstract
Using the change in the intrinsic optical properties of YMg-based thin films upon exposure to hydrogen, we observe the presence of hydrogen at concentrations as low as 20 ppm just by a change in color. The eye-visible color change circumvents the use of any electronics in this device, thereby making it an inexpensive H2 detector. The detector shows high selectivity towards H2 in H2-O2 - mixtures, and responds within 20 s to 0.25% H2 in the presence of 18% O2.
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Peter Ngene, Peter Ngene, Tsveta Radeva, Tsveta Radeva, Ruud Westerwaal, Ruud Westerwaal, Herman Schreuders, Herman Schreuders, Bernard Dam, Bernard Dam, } "Eye readable metal hydride based hydrogen tape sensor for health applications", Proc. SPIE 9202, Photonics Applications for Aviation, Aerospace, Commercial, and Harsh Environments V, 920203 (5 September 2014); doi: 10.1117/12.2059835; https://doi.org/10.1117/12.2059835
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