Electrical and optical properties of carbon nanotubes characterized by terahertz electromagnetic pulses

Chul Kang, In Hee Maeng, Seung Jae Oh, Joo Hiuk Son, Tae In Jeon, Kay Hyeok An, Seong Chu Lim, Young Hee Lee

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The frequency-dependent optical constants and electrical conductivities of hydrogen-functionalized single-walled carbon nanotubes have been measured from the 0.2- to 1.5-THz region using a terahertz time domain spectroscopy. The indices of refraction and electrical conductivities of the sample after hydrogen functionalization were smaller than those of the sample before hydrogen functionalization. The experimental results were fitted using the Maxwell-Garnett model, and a reduction of plasma frequency was observed. This can be attributed to the fact that the hydrogen functionalization has reduced the number of free carriers with the bonding change from sp2 to sp3.

Original languageEnglish
Title of host publicationInternational Topical Meeting on Microwave Photonics, MWP 2005
Pages281-284
Number of pages4
StatePublished - 2005
EventInternational Topical Meeting on Microwave Photonics, MWP 2005 - Seoul, Korea, Republic of
Duration: 12 Oct 200514 Oct 2005

Publication series

NameInternational Topical Meeting on Microwave Photonics, MWP 2005
Volume2005

Conference

ConferenceInternational Topical Meeting on Microwave Photonics, MWP 2005
Country/TerritoryKorea, Republic of
CitySeoul
Period12/10/0514/10/05

Keywords

  • Carbon nanotubes
  • Functionalization
  • Terahertz

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