A reel-wound carbon nanotube polarizer for terahertz frequencies

Jisoo Kyoung, Eui Yun Jang, Márcio D. Lima, Hyeong Ryeol Park, Raquel Ovalle Robles, Xavier Lepró, Yong Hyup Kim, Ray H. Baughman, Dai Sik Kim

Research output: Contribution to journalArticlepeer-review

69 Scopus citations

Abstract

Utilizing highly oriented multiwalled carbon nanotube aerogel sheets, we fabricated micrometer-thick freestanding carbon nanotube (CNT) polarizers. Simple winding of nanotube sheets on a U-shaped polyethylene reel enabled rapid and reliable polarizer fabrication, bypassing lithography or chemical etching processes. With the remarkable extinction ratio reaching ∼37 dB in the broad spectral range from 0.1 to 2.0 THz, combined with the extraordinary gravimetric mechanical strength of CNTs, and the dispersionless character of freestanding sheets, the commercialization prospects for our CNT terahertz polarizers appear attractive.

Original languageEnglish (US)
Pages (from-to)4227-4231
Number of pages5
JournalNano letters
Volume11
Issue number10
DOIs
StatePublished - Oct 12 2011

Bibliographical note

Copyright:
Copyright 2011 Elsevier B.V., All rights reserved.

Keywords

  • Carbon nanotube
  • THz polarizer
  • aligned nanotube sheets
  • nanotube dischroism
  • nanotubeprocessing
  • wound nanotube sheets

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