Ultralow-power hydrogen sensing with single palladium nanowires

article





Offermans, P.

Tong, H.D.

Rijn, C.J.M. van

Merken, P.

Brongersma, S.H.

Crego-Calama, M.
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.
Topics

















Applied biasHydrogen concentrationHydrogen-sensingInfluence of oxygenMicro-fabrication techniquesNoise spectraPalladium nanowiresResistive heatingResponse timeRoom temperatureSilicon substratesUltra-low powerElectric wireHydrogenOxygenPalladiumPower spectrumNanowires
TNO Identifier
461663
Repository link
https://resolver.tno.nl/uuid:a63caefe-9e47-46e6-ac28-615db46c7f61
ISSN
0003-6951
Source
Applied Physics Letters, 94(22)
Article nr.
223110
Files
To receive the publication files, please send an e-mail request to TNO Repository.