Application of Conductive Carbon Nanotube Fibers and Composites: Gas Sensor

Report No. ARL-CR-0714
Authors: Padraig G. Moloney and Enrique V. Barrera
Date/Pages: May 2013; 36 pages
Abstract: Sensing based on carbon nanotube (CNT) materials has been as area of interest since the materials discovery by Iijima in 1991 (Nature 1991, 354, 5658), and an active area of research once CNT availability began to increase via the innovations of Smalley and others (Chem Phys Lett 1995, 243, 4954). The work presented in this report was conducted at Rice University under contract W911NF-11-1-0249. Here, it is shown that the use of high weight percentage CNT medium density polyethylene (MDPE) composites has suitability towards the sensing of nerve agent stimulants such as dimethyl methylphosphonate (DMMP). The results indicate a possible binary composite approach to sensing, using two variants of CNT. As this work progresses, optimization of the CNT towards sensing DMMP through functionalization is suggested, as is improvement to the experimental apparatus to add functionality, such as controlled and active flow, at a fixed temperature relevant to the application.
Distribution: Approved for public release
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Last Update / Reviewed: May 1, 2013