Substitutional doping of carbon nanotubes to control their electromagnetic characteristics

A. M. Nemilentsau, M. V. Shuba, G. Ya Slepyan, P. P. Kuzhir, S. A. Maksimenko, P. N. D'Yachkov, A. Lakhtakia

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


Substitutional doping of bundles and composite materials, containing a mixture of semiconducting and metallic single-wall carbon nanotubes (SWNTs), by either nitrogen or boron atoms substantially alters their electromagnetic characteristics in the terahertz and the far-infrared regimes. Metallization of semiconducting SWNTs caused by doping exclusively by either boron or nitrogen increases the axial polarizability, the antenna efficiency, and the intensity enhancement factor of SWNT bundles; likewise, the conductivity of SWNT-based composite materials is enhanced by substitutional doping. The frequencies of the antenna resonances in the axial-polarizability spectra of the doped bundles are blueshifted in comparison with the resonance frequencies in the undoped ones. The doping-caused enhancement of the effective conductivity of SWNT-based composite materials in the far-infrared regime may occur not only due to the enhancement of conductivities of single SWNTs but also due to the decrease in the depolarizing field.

Original languageEnglish (US)
Article number235424
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number23
StatePublished - Dec 14 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Substitutional doping of carbon nanotubes to control their electromagnetic characteristics'. Together they form a unique fingerprint.

Cite this