RFID passive gas sensor integrating carbon nanotubes

C. Occhiuzzi; A. Rida; G. Marrocco; M. Tentzeris

doi:10.1109/TMTT.2011.2163416

RFID passive gas sensor integrating carbon nanotubes

C. Occhiuzzi, A. Rida, G. Marrocco, M. Tentzeris

Research output: Contribution to journal › Article › Scientific › peer-review

103 Citations (Scopus)

Abstract

Carbon nanotube (CNT) composites are sensitive to the presence of gases due to their high surface-to-volume ratio and hollow structure that are well suited for gas molecule absorption and storage. Such sensing capability is here integrated with UHF RF identification (RFID) technology to achieve passive and low-cost sensors, remotely readable. CNT film (buckypaper) is used as a localized variable resistive load integrated into a tag antenna, which becomes able to transduce the presence of hazardous gas in the environment, ammonia in this case, into a change of its electromagnetic features. The dynamic range and the hysteresis of the radio sensor are investigated by simulations, equivalent circuits, and articulated experimentations within a true RFID link, providing the proof of concept and some guidelines for tag design.

Original language	English
Article number	6003806
Pages (from-to)	2674-2684
Number of pages	11
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	59
Issue number	10 PART 2
DOIs	https://doi.org/10.1109/TMTT.2011.2163416
Publication status	Published - 2011
Publication type	A1 Journal article-refereed

Keywords

Nanotube
Passive gas sensor
RF identification (RFID)

ASJC Scopus subject areas

Radiation
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/TMTT.2011.2163416

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AB - Carbon nanotube (CNT) composites are sensitive to the presence of gases due to their high surface-to-volume ratio and hollow structure that are well suited for gas molecule absorption and storage. Such sensing capability is here integrated with UHF RF identification (RFID) technology to achieve passive and low-cost sensors, remotely readable. CNT film (buckypaper) is used as a localized variable resistive load integrated into a tag antenna, which becomes able to transduce the presence of hazardous gas in the environment, ammonia in this case, into a change of its electromagnetic features. The dynamic range and the hysteresis of the radio sensor are investigated by simulations, equivalent circuits, and articulated experimentations within a true RFID link, providing the proof of concept and some guidelines for tag design.

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RFID passive gas sensor integrating carbon nanotubes

Abstract

Keywords

ASJC Scopus subject areas

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