Suspended carbon nanotubes for humidity sensing

Arunachalam, Shivaram, Gupta, Anubha A., Izquierdo, Ricardo et Nabki, Frederic. 2018. « Suspended carbon nanotubes for humidity sensing ». Sensors, vol. 18, nº 5.
Compte des citations dans Scopus : 32.

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Résumé

A room temperature microfabrication technique using SU8, an epoxy-based highly functional photoresist as a sacrificial layer, is developed to obtain suspended aligned carbon nanotube beams. The humidity-sensing characteristics of aligned suspended single-walled carbon nanotube films are studied. A comparative study between suspended and non-suspended architectures is done by recording the resistance change in the nanotubes under humidity. For the tests, the humidity was varied from 15% to 98% RH. A comparative study between suspended and non-suspended devices shows that the response and recovery times of the suspended devices was found to be almost 3 times shorter than the non-suspended devices. The suspended devices also showed minimal hysteresis even after 10 humidity cycles, and also exhibit enhanced sensitivity. Repeatability tests were performed by subjecting the sensors to continuous humidification cycles. All tests reported here have been performed using pristine non-functionalized nanotubes.

Type de document:	Article publié dans une revue, révisé par les pairs
Professeur:	Professeur Izquierdo, Ricardo Nabki, Frédéric
Affiliation:	Génie électrique, Génie électrique
Date de dépôt:	16 juill. 2018 21:23
Dernière modification:	22 janv. 2020 20:10
URI:	https://espace2.etsmtl.ca/id/eprint/16890

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