Print Email Facebook Twitter Ultralow-power hydrogen sensing with single palladium nanowires Title Ultralow-power hydrogen sensing with single palladium nanowires Author Offermans, P. Tong, H.D. van Rijn, C.J.M. Merken, P. Brongersma, S.H. Crego-Calama, M. TNO Industrie en Techniek Publication year 2009 Abstract Palladium nanowires were fabricated on silicon substrates using conventional microfabrication techniques. Sensors based on such nanowires show a reversible response to hydrogen concentrations as low as 27 ppm with response times varying from 5 s (H2 concentrations >20%) to 30 s (H2 concentrations <100 ppm) at room temperature. The response times can be reduced by increasing the applied bias due to resistive heating. The noise spectrum of the nanowires shows a 1/f behavior, sufficiently low to enables the detection of hydrogen with an ultralow-power consumption. The influence of oxygen on the nanowire response was also investigated. © 2009 American Institute of Physics. Subject PhysicsApplied biasHydrogen concentrationHydrogen-sensingInfluence of oxygenMicro-fabrication techniquesNoise spectraPalladium nanowiresResistive heatingResponse timeRoom temperatureSilicon substratesUltra-low powerElectric wireHydrogenOxygenPalladiumPower spectrumNanowires To reference this document use: http://resolver.tudelft.nl/uuid:a63caefe-9e47-46e6-ac28-615db46c7f61 DOI https://doi.org/10.1063/1.3132064 TNO identifier 461663 ISSN 0003-6951 Source Applied Physics Letters, 94 (22) Article number 223110 Document type article Files To receive the publication files, please send an e-mail request to TNO Library.