Conductometric Gas Nanosensors

Author:

Di Francia Girolamo1,Alfano Brigida1,La Ferrara Vera1

Affiliation:

1. Italian Agency for New Technologies, Energy, and the Environment (ENEA), CR-Portici P.le E. Fermi 1, 80055 Napoli, Italy

Abstract

This paper presents a review of the current research activities in the field of gas nanosensors. Nanomaterials are characterized by physical and chemical properties that differ from their macroscopic counterparts and, in particular, by an enhanced chemical reactivity even at room temperature. This effect has stimulated the development of chemical sensors based on several different nanomaterials. Here we focus most attention on carbon nanotubes, silicon and metal oxide nanoparticles and metal nanowires. After introducing a few general definitions a discussion on the fundamental properties of the nanostate used in the sensor field is presented and several nanosensors, based on the aforementioned nanomaterials, are discussed. Finally, some personal conclusions will be drawn.

Publisher

Hindawi Limited

Subject

Electrical and Electronic Engineering,Instrumentation,Control and Systems Engineering

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