5 October 2012 Effects of inclusion dimensions and p-type doping in the terahertz spectra of composite materials containing bundles of single-wall carbon nanotubes
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Abstract
Experiments recently showed that the finite lengths of single-wall carbon nanotubes (SWNTs) randomly dispersed and randomly aligned in a composite material are responsible for the appearance of a broad peak in its terahertz conductivity. We investigated, both theoretically and experimentally, the influences of the cross-sectional diameter and the acid-induced p-type doping of SWNT bundles in composite materials on their terahertz conductivity peaks (TCPs). We found that the TCP blue-shifts if the inclusion diameter is larger, and that doping enhances the effective conductivity of the composite material. But, a theoretical prediction of the blue-shifting of the TCP by p-type doping was only weakly supported by experimental evidence. All experimental observations turned out to be in good qualitative agreement with the concept of localized plasmon resonance in SWNTs.
© 2012 Society of Photo-Optical Instrumentation Engineers (SPIE)
Mikhail V. Shuba, Mikhail V. Shuba, Alesia Paddubskaya, Alesia Paddubskaya, Polina P. Kuzhir, Polina P. Kuzhir, Gregory Y. Slepyan, Gregory Y. Slepyan, Dalius Seliuta, Dalius Seliuta, Irmantas Kašalynas, Irmantas Kašalynas, Gintaras Valušis, Gintaras Valušis, Akhlesh Lakhtakia, Akhlesh Lakhtakia, } "Effects of inclusion dimensions and p-type doping in the terahertz spectra of composite materials containing bundles of single-wall carbon nanotubes," Journal of Nanophotonics 6(1), 061707 (5 October 2012). https://doi.org/10.1117/1.JNP.6.061707 . Submission:
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