Skip to Main Content
Your organization might have access to this article on the publisher's site. To check,
click on this link:http://dx.doi.org/+10.1063/1.1610251
A circular disk resonator is used to study the gas sensing properties of carbon nanotubes. It detects the presence of gases based on the change in the dielectric constant rather than electrical conductivity of single walled carbon nanotubes (SWNTs) upon gas exposure. A conducting circular disk is coated with electric arc prepared SWNTs and degassed by heating under a high vacuum. It exhibits noticeable shifts in resonant frequency to both polar (NH3 and CO) and nonpolar gases (He, Ar, N2, and O2). Gas concentrations as low as 100 ppm can be detected using this sensor configuration. © 2003 American Institute of Physics.
A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.© Copyright 2015 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.