A carbon-nanotube-based sensor array for formaldehyde detection |
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Authors: | Lu Yijiang Meyyappan M Li Jing |
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Affiliation: | NASA Ames Research Center, Moffett Field, CA 94035, USA. |
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Abstract: | We have fabricated a sensor array consisting of 32 sensor elements with pristine, doped and metal-loaded single-wall carbon nanotubes as sensing materials. The sensor elements consist of interdigitated electrodes with varying finger widths and gaps. The chemiresistor-type sensors provide a significant response to formaldehyde at concentrations down to 10 ppb in air with rapid response and recovery times. |
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