Research Papers

Terahertz electrical conductivity and optical characterization of composite nonaligned single- and multiwalled carbon nanotubes

[+] Author Affiliations
Ehsan Dadrasnia

Universidad Carlos III de Madrid, Optoelectronics and Laser Technology Group, Leganes, 28911, Madrid, Spain

Sujitha Puthukodan

Universidad Carlos III de Madrid, Optoelectronics and Laser Technology Group, Leganes, 28911, Madrid, Spain

Horacio Lamela

Universidad Carlos III de Madrid, Optoelectronics and Laser Technology Group, Leganes, 28911, Madrid, Spain

J. Nanophoton. 8(1), 083099 (Jan 03, 2014). doi:10.1117/1.JNP.8.083099
History: Received April 12, 2013; Revised November 26, 2013; Accepted December 2, 2013
Text Size: A A A

Abstract.  We employed noncontact terahertz time-domain spectroscopy to investigate and compare the electrical/optical properties of nonaligned single-walled carbon nanotube and nonaligned multiwalled carbon nanotube thin films. Using Drude–Lorentz model together with the Maxwell Garnett effective medium theory, we determined the electrical conductivities from the extracted data of differential complex terahertz analysis in the frequency range of 0.1 to 2 THz. The results demonstrate that the conductivity of isotropic single-walled carbon nanotube thin film is almost two times larger compared to isotropic multiwalled carbon nanotube thin film due to the increased number of surface defects and the availability of mobile carriers. By using Drude–Lorentz model, the broadening optical density and conductivity can be studied at higher frequencies.

Figures in this Article
© 2014 Society of Photo-Optical Instrumentation Engineers

Citation

Ehsan Dadrasnia ; Sujitha Puthukodan and Horacio Lamela
"Terahertz electrical conductivity and optical characterization of composite nonaligned single- and multiwalled carbon nanotubes", J. Nanophoton. 8(1), 083099 (Jan 03, 2014). ; http://dx.doi.org/10.1117/1.JNP.8.083099


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.