Scientific Results

Metal oxide nanowire chemical and biochemical sensors

Year: 2013

Authors: Comini E., Baratto C., Faglia G., Ferroni M., Ponzoni A., Zappa, D., Sberveglieri G.

Autors Affiliation: SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy

Abstract: The fabrication methods and the basic properties of the metal-oxide nanostructures referred as nanowires are presented and reviewed in this paper, with particular emphasis to the electrical and optical properties and their useful implementation for chemical and biochemical sensing. The field of chemical sensors has benefited by the wealth of highly crystalline nanostructures produced by physical and chemical methods. Large variation in bulk electrical conductivity, structural stability upon high temperature operation, high degree of crystalline ordering, large impact of point defects and surface states have unveiled the potential for the sensing field and have opened up new perspectives of application and for the realization of novel device architectures. This paper will summarize various techniques for preparation and characterization; then, the growth mechanisms and working principles will be discussed. Finally, the challenges that this field is currently facing are presented to signify the perspectives of expansion.

Journal/Review: JOURNAL OF MATERIALS RESEARCH

Volume: 28 (21)      Pages from: 2911  to: 2931

More Information: The work has been supported by the Italian MIUR through the FIRB Project RBAP115AYN \”Oxides at the nanoscale: multifunctionality and applications.\” This work was partially supported by the European Community\’s 7th Framework Programme, under the grant agreement NMP3-LA-2010-246334 and no. 247768, and the Russian Federation Government, under the State Contract no. 02.527.11.0008, within the collaborative Europe-Russia S3 project. Financial support of the European Commission is therefore gratefully acknowledged. Funding from the European Community\’s 7th Framework Programme, under the grant agreement no. 295216 is acknowledged.
KeyWords: gas-sensing properties; single SN02 nanowires; tin oxide; transmission electron-microscopy; label-free detection
DOI: 10.1557/jmr.2013.304

Citations: 11
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English