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Favier F, Walter EC, Zach MP, et al. Hydrogen sensors and switches from electrodeposited palladium mesowire arrays. Science. 2001;293(5538):2227-31doi: 10.1126/science.1063189.
Favier, F., Walter, E. C., Zach, M. P., Benter, T., & Penner, R. M. (2001). Hydrogen sensors and switches from electrodeposited palladium mesowire arrays. Science (New York, N.Y.), 293(5538), 2227-31. https://doi.org/10.1126/science.1063189
Favier, F, et al. "Hydrogen sensors and switches from electrodeposited palladium mesowire arrays." Science (New York, N.Y.) vol. 293,5538 (2001): 2227-31. doi: https://doi.org/10.1126/science.1063189
Favier F, Walter EC, Zach MP, Benter T, Penner RM. Hydrogen sensors and switches from electrodeposited palladium mesowire arrays. Science. 2001 Sep 21;293(5538):2227-31. doi: 10.1126/science.1063189. PMID: 11567132.
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Science. 2001 Sep 21;293(5538):2227-31. doi: 10.1126/science.1063189.

Hydrogen sensors and switches from electrodeposited palladium mesowire arrays.

Science (New York, N.Y.)

F Favier, E C Walter, M P Zach, T Benter, R M Penner

Affiliations

  1. UMR 5072 CNRS-Université Montpellier II, 34095 Montpellier, France.

PMID: 11567132 DOI: 10.1126/science.1063189

Abstract

Hydrogen sensors and hydrogen-activated switches were fabricated from arrays of mesoscopic palladium wires. These palladium "mesowire" arrays were prepared by electrodeposition onto graphite surfaces and were transferred onto a cyanoacrylate film. Exposure to hydrogen gas caused a rapid (less than 75 milliseconds) reversible decrease in the resistance of the array that correlated with the hydrogen concentration over a range from 2 to 10%. The sensor response appears to involve the closing of nanoscopic gaps or "break junctions" in wires caused by the dilation of palladium grains undergoing hydrogen absorption. Wire arrays in which all wires possessed nanoscopic gaps reverted to open circuits in the absence of hydrogen gas.

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