Nano Chemical Sensors With Polymer-Coated Carbon Nanotubes

Nano Chemical Sensors With Polymer-Coated Carbon Nanotubes

A simple sensor platform consisting of an interdigitated electrode (IDE) pattern has been fabricated for sensing gas and organic vapors. Purified single-walled carbon nanotubes (SWNTs) in the form of a network laid on the IDE by solution casting serve as the sensor material. The electrical conductiv...

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Veröffentlicht in:IEEE sensors journal 2006-10, Vol.6 (5), p.1047-1051
Hauptverfasser: Jing Li, Yijiang Lu, Meyyappan, M.
Format: Artikel
Sprache:eng
Schlagworte:
Carbon nanotubes
Carbon nanotubes (CNTs)
Casting
chemical sensing
Chemical sensors
Conducting materials
Conductivity
Electrodes
Gas detectors
Gases
Nanomaterials
Nanostructure
nanotechnology
Networks
Organic materials
Polyethylenes
polymer coating
Polymers
Resistivity
Sensors
Single wall carbon nanotubes
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Beschreibung
Zusammenfassung:A simple sensor platform consisting of an interdigitated electrode (IDE) pattern has been fabricated for sensing gas and organic vapors. Purified single-walled carbon nanotubes (SWNTs) in the form of a network laid on the IDE by solution casting serve as the sensor material. The electrical conductivity of the SWNT network changes reproducibly upon exposure to various gases and vapors. Selectivity to specific gases, for example, chlorine and hydrochloric acid vapor, is demonstrated by coating the SWNTs with polymers such as chlorosulfonated polyethylene and hydroxypropyl cellulose
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2006.881018