Radio-frequency characterization of varactors based on carbon nanotube arrays

J. Ek-Weis; A. Eriksson; T. Idda; N. Olofsson; E. E.B. Campbell

doi:10.1243/17403499JNN122

Radio-frequency characterization of varactors based on carbon nanotube arrays

J. Ek-Weis, A. Eriksson, T. Idda, N. Olofsson, E. E.B. Campbell

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Arrays of carbon nanotubes were reversibly actuated by applying a bias voltage. The actuation results in a variable capacitance between the arrays, which can be used to build a varactor. The capacitances were evaluated by simulating the scattering parameters in an equivalent electrical circuit while using the capacitance between the arrays as a fitting parameter. These simulations were compared with radio-frequency (RF) measurements on devices. A very good agreement between measurement and model was obtained. The capacitance could be varied by more than 20 per cent before the arrays were pulled into contact.

Original language	English
Pages (from-to)	111-115
Number of pages	5
Journal	Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanoengineering and Nanosystems
Volume	222
Issue number	3-4
DOIs	https://doi.org/10.1243/17403499JNN122
State	Published - 2008

Keywords

Carbon nanotube
RF measurements
Varactor

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10.1243/17403499JNN122

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abstract = "Arrays of carbon nanotubes were reversibly actuated by applying a bias voltage. The actuation results in a variable capacitance between the arrays, which can be used to build a varactor. The capacitances were evaluated by simulating the scattering parameters in an equivalent electrical circuit while using the capacitance between the arrays as a fitting parameter. These simulations were compared with radio-frequency (RF) measurements on devices. A very good agreement between measurement and model was obtained. The capacitance could be varied by more than 20 per cent before the arrays were pulled into contact.",

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AU - Campbell, E. E.B.

PY - 2008

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Radio-frequency characterization of varactors based on carbon nanotube arrays

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Keywords

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