Obrzut, J.
, Migler, K.
, Dong, L.
and Jiao, J.
(2007),
Measurement of Complex Impedance of Individual Metallic Carbon Nanotubes, IEEE Transactions on Instrumentation and Measurement, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852765
(Accessed May 2, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Measurement of Complex Impedance of Individual Metallic Carbon Nanotubes
Published
Author(s)
, , L F. Dong, J Jiao
Abstract
We describe impedance measurements of individual single wall carbon nanotubes (CNTs) in the frequency range of 40 Hz to 100 MHz. The extracted CNT capacitance of 4 10-14 F/mm, is independent of the total resistance, however the CCNT value is larger than theoretically predicted quantum capacitance of a perfect tube. We observe a sharp conductor-insulator transition at a crossover frequency above which the circuit response becomes capacitive. Our results agree qualitatively with the theoretical impedance characteristic of a perfect CNT, and furthermore, they imply that the crossover frequency due to quantum capacitance would fall in the range of about 100 GHz.Citation
IEEE Transactions on Instrumentation and Measurement
Pub Type
Journals
Download Paper
Citation
Created May 3, 2007, Updated February 19, 2017