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Laser ablation direct writing of metal nanoparticles for hydrogen and humidity sensors.

Beliatis, MJ, Martin, NA, Leming, EJ, Silva, SR and Henley, SJ (2011) Laser ablation direct writing of metal nanoparticles for hydrogen and humidity sensors. Langmuir, 27 (3). pp. 1241-1244.

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A UV pulsed laser writing technique to fabricate metal nanoparticle patterns on low-cost substrates is demonstrated. We use this process to directly write nanoparticle gas sensors, which operate via quantum tunnelling of electrons at room temperature across the device. The advantages of this method are no lithography requirements, high precision nanoparticle placement, and room temperature processing in atmospheric conditions. Palladium-based nanoparticle sensors are tested for the detection of water vapor and hydrogen within controlled environmental chambers. The electrical conduction mechanism responsible for the very high sensitivity of the devices is discussed with regard to the interparticle capacitance and the tunnelling resistance.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Nano-Electronics Centre
Authors :
Beliatis, MJ
Martin, NA
Leming, EJ
Silva, SR
Henley, SJ
Date : 1 February 2011
DOI : 10.1021/la1038574
Additional Information : This document is the Accepted Manuscript version of a Published Work that appeared in final form in Langmuir, copyright © American Chemical Society after peer review and technical editing by the publisher.To access the final edited and published work see
Depositing User : Symplectic Elements
Date Deposited : 03 May 2012 11:10
Last Modified : 31 Oct 2017 14:36

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