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Metal oxide nanowire chemical and biochemical sensors

Published online by Cambridge University Press:  06 November 2013

Elisabetta Comini ,
Camilla Baratto ,
Guido Faglia ,
Matteo Ferroni ,
Andrea Ponzoni ,
Dario Zappa  and
Giorgio Sberveglieri
Elisabetta Comini*
Affiliation:
SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy
Camilla Baratto
Affiliation:
SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy
Guido Faglia
Affiliation:
SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy
Matteo Ferroni
Affiliation:
SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy
Andrea Ponzoni
Affiliation:
SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy
Dario Zappa
Affiliation:
SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy
Giorgio Sberveglieri
Affiliation:
SENSOR, Department of Information Engineering, University of Brescia and CNR-INO, 25133 Brescia, Italy
*
a)Address all correspondence to this author. e-mail: comini@ing.unibs.it
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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.

Keywords

metal oxides nanowireschemical sensorsbiochemical sensors
Type
Invited Feature Papers
Information
Journal of Materials Research , Volume 28 , Issue 21 , 14 November 2013 , pp. 2911 - 2931
Copyright
Copyright © Materials Research Society 2013 

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