Nerve agent detection using networks of single-walled carbon nanotubes
| Autor: | E. J. Houser, J. P. Novak, R. A. McGill, J. L. Stepnowski, E. S. Snow, Doewon Park |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
Sarin Chemical Warfare Agents Materials science Physics and Astronomy (miscellaneous) Dimethyl methylphosphonate Nanotechnology Carbon nanotube Polymer law.invention chemistry.chemical_compound Hydrocarbon chemistry law Chemical specificity medicine Nerve agent medicine.drug |
| Zdroj: | Applied Physics Letters. 83:4026-4028 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | We report the use of carbon nanotubes as a sensor for chemical nerve agents. Thin-film transistors constructed from random networks of single-walled carbon nanotubes were used to detect dimethyl methylphosphonate (DMMP), a simulant for the nerve agent sarin. These sensors are reversible and capable of detecting DMMP at sub-ppb concentration levels, and they are intrinsically selective against interferent signals from hydrocarbon vapors and humidity. We provide additional chemical specificity by the use of filters coated with chemoselective polymer films. These results indicate that the electronic detection of sub-ppb concentrations of nerve agents and potentially other chemical warfare agents is possible with simple-to-fabricate carbon nanotube devices. |
| Databáze: | OpenAIRE |
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