Capacitance and Conductance of Single-Walled Carbon Nanotubes in the Presence of Chemical Vapors
- 26 October 2005
- journal article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 5 (12) , 2414-2417
- https://doi.org/10.1021/nl051669c
Abstract
Simultaneous conductance and capacitance measurements on a single-walled carbon nanotube (SWNT) network are used to extract an intrinsic property of molecular adsorbates. Adsorbates from dilute chemical vapors produce a rapid response in both the capacitance and the conductance of the SWNT network. These responses are caused by a combination of two distinct physiochemical properties of the adsorbates: charge transfer and polarizability. We find that the ratio of the conductance response to the capacitance response is a concentration-independent intrinsic property of a chemical vapor that can assist in its identification.Keywords
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