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Issue 33, 2009
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On the role of individual metal oxide nanowires in the scaling down of chemical sensors

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Abstract

Single-crystalline semiconductor metal oxide nanowires exhibit novel structural and electrical properties attributed to their reduced dimensions, well-defined geometry and the negligible presence of grain boundaries and dislocations in their inside. This favours direct chemical transduction mechanisms at their surfaces upon exposure to gas molecules, making them promising active device elements for a new generation of chemical sensors. Furthermore, metal oxide nanowires can be heated up to the optimal operating temperature for gas sensing applications with extremely low power consumption due to their small mass, giving rise to devices more efficient than their nanoparticle-based counterparts. Here, the current status of development of sensors based on individual metal oxide nanowires is surveyed, and the main technological challenges which act as bottleneck to their potential use in real applications are presented.

Graphical abstract: On the role of individual metal oxide nanowires in the scaling down of chemical sensors

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Publication details

The article was received on 13 Mar 2009, accepted on 26 May 2009 and first published on 24 Jun 2009


Article type: Perspective
DOI: 10.1039/B905234H
Citation: Phys. Chem. Chem. Phys., 2009,11, 7105-7110
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    On the role of individual metal oxide nanowires in the scaling down of chemical sensors

    F. Hernandez-Ramirez, J. D. Prades, R. Jimenez-Diaz, T. Fischer, A. Romano-Rodriguez, S. Mathur and J. R. Morante, Phys. Chem. Chem. Phys., 2009, 11, 7105
    DOI: 10.1039/B905234H

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