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Optical Response of Ultrathin Periodically Aligned Single-Wall Carbon Nanotube Films

Published online by Cambridge University Press:  15 May 2020

Chandra M. Adhikari  and
Igor V. Bondarev Open the ORCID record for Igor V. Bondarev [Opens in a new window]
Chandra M. Adhikari
Affiliation:
Department of Mathematics & Physics, North Carolina Central University, Durham, NC 27707, U.S.A.
Igor V. Bondarev
Affiliation:
Department of Mathematics & Physics, North Carolina Central University, Durham, NC 27707, U.S.A.
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Abstract

We present a semi-analytical expression for the dielectric response function of quasi-2D ultrathin films of periodically aligned single-walled carbon nanotubes. We derive the response function in terms of the individual nanotube conductivity, plasma frequency, and the volume fraction of carbon nanotubes in the film. The real part of the dielectric response function is negative for a sufficiently wide range of the incident photon energy, indicating that the film behaves as a hyperbolic metamaterial. Inhomogeneous broadening increases the effect.

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MRS Advances , Volume 5 , Issue 52-53: Nanoscale and Quantum Materials , 2020 , pp. 2685 - 2691
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Copyright © 2020 Materials Research Society

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