Detection of Carbon Monoxide Using Polymer-Carbon Composite Films

A carbon monoxide (CO) sensor was developed that can be incorporated into an existing sensing array architecture. The CO sensor is a low-power chemiresistor that operates at room temperature, and the sensor fabrication techniques are compatible with ceramic substrates.

Sensors made from four different polymers were tested: poly (4-vinylpryridine), ethylene-propylene-diene-terpolymer, polyepichlorohydrin, and polyethylene oxide (PEO). The carbon black used for the composite films was Black Pearls 2000, a furnace black made by the Cabot Corporation. Polymers and carbon black were used as received. In fact, only two of these sensors showed a good response to CO. The poly (4-vinylpryridine) sensor is noisy, but it does respond to the CO above 200 ppm. The polyepichlorohydrin sensor is less noisy and shows good response down to 100 ppm.

This work was done by Margie L. Homer, Margaret A. Ryan, and Liana M. Lara of Caltech for NASA’s Jet Propulsion Laboratory. For more information, contact This email address is being protected from spambots. You need JavaScript enabled to view it.. NPO-47612

White Papers

Achieving Better Adhesion with Proper Surface Preparation
Sponsored by master bond
Design to Manufacturing: Complete Support for High-Precision Components
Sponsored by utitec
Antenna Basics
Sponsored by rohde and schwarz a and d
Step on It! Walking for Power
Sponsored by HP
Enabling Complex Applications with a Dual Node Single Board Computer
Sponsored by curtiss wright
SWaP-C and Why Your Component Partner Matters
Sponsored by sparton

White Papers Sponsored By: