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This study deals with the development of a hybrid SnO 2 /SWNTs based gas sensor for the detection of O 3 and NH 3 . Experiments concerned the study of the correlation between the physico-chemical properties of carbon nanotubes and the sensor s sensitivity. Four samples of SWNTs were investigated and the results showed a strong dependence between the characteristics of such nanomaterials and the efficiency of the hybrid layers for gas detection.

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We propose an approach to embedded monitoring of construction materials relying on 2D, conformable architectures that are expected to be lower cost and more robust than their 3D counterparts. In this article, we present two examples: a RFID-enabled carbon nanotube strain sensor on plastic for microcrack monitoring in concrete and a nanoparticle-asphalt sandwich for weigh-in-motion applications.

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