Special Section on Fundamental and Applied Nanoelectromagnetics

Effects of inclusion dimensions and p-type doping in the terahertz spectra of composite materials containing bundles of single-wall carbon nanotubes

[+] Author Affiliations
Mikhail V. Shuba

Belarus State University, Institute for Nuclear Problems, Bobruiskaya 11, 220050 Minsk, Belarus

Alesia G. Paddubskaya

Belarus State University, Institute for Nuclear Problems, Bobruiskaya 11, 220050 Minsk, Belarus

Polina P. Kuzhir

Belarus State University, Institute for Nuclear Problems, Bobruiskaya 11, 220050 Minsk, Belarus

Gregory Ya. Slepyan

Belarus State University, Institute for Nuclear Problems, Bobruiskaya 11, 220050 Minsk, Belarus

Dalius Seliuta

Center for Physical Sciences and Technology, A. Gostauto 11, LT-01108 Vilnius, Lithuania

Irmantas Kašalynas

Center for Physical Sciences and Technology, A. Gostauto 11, LT-01108 Vilnius, Lithuania

Gintaras Valušis

Center for Physical Sciences and Technology, A. Gostauto 11, LT-01108 Vilnius, Lithuania

Akhlesh Lakhtakia

Pennsylvania State University, Department of Engineering Science and Mechanics, Nanoengineered Metamaterials Group, University Park, Pennsylvania 16802-6812

J. Nanophoton. 6(1), 061707 (Oct 05, 2012). doi:10.1117/1.JNP.6.061707
History: Received July 6, 2012; Revised August 31, 2012; Accepted September 7, 2012
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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.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Mikhail V. Shuba ; Alesia G. Paddubskaya ; Polina P. Kuzhir ; Gregory Ya. Slepyan ; Dalius Seliuta, et al.
"Effects of inclusion dimensions and p-type doping in the terahertz spectra of composite materials containing bundles of single-wall carbon nanotubes", J. Nanophoton. 6(1), 061707 (Oct 05, 2012). ; http://dx.doi.org/10.1117/1.JNP.6.061707


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