Acoustic and optical VOCs sensors incorporating carbon nanotubes

Michele Penza, Gennaro Cassano, Patrizia Aversa, Andrea Cusano, Marco Consales, Michele Giordano, Luigi Nicolais

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Abstract

The authors investigate the sensing properties of single-walled carbon nanotubes (SWCNTs) films, which are used as nanostructured materials for chemical sensors onto three types of transducers using different principles of operation as surface acoustic waves (SAWs), quartz-crystal microbalance (QCM), and a standard silica optical fiber (SOF) for detection of volatile organic compounds at a room temperature. The sensing probes have been configured as 315- and 433-MHz SAW two-port resonator-based oscillator, 10-MHz QCM resonator, and SOF light-reflectometry-based system at a wavelength of 1310 nm. A nanocomposite film of SWCNTs embedded in a cadmium-arachidate matrix was deposited by Langmuir-Blodgett (LB) technique onto the SAW sensors. An LB multilayer of SWCNTs-onto-CdA buffer material was also deposited onto the QCM and SOF sensors. The experiments demonstrate that carbon-nanotubes acoustic and optical sensors are highly sensitive to a wide range of polar and nonpolar organic solvents up to a sub-ppm detection limit at a room temperature. © 2006 IEEE.
Original languageEnglish
Article number1661565
Pages (from-to)867 - 874
Number of pages8
JournalIEEE Sensors Journal
Volume6
Issue number4
DOIs
Publication statusPublished - Aug 2006
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Electrical and Electronic Engineering

Cite this

Penza, M., Cassano, G., Aversa, P., Cusano, A., Consales, M., Giordano, M., & Nicolais, L. (2006). Acoustic and optical VOCs sensors incorporating carbon nanotubes. IEEE Sensors Journal, 6(4), 867 - 874. [1661565]. https://doi.org/10.1109/JSEN.2006.877974