Aligned carbon nanotubes as polarization-sensitive, molecular near-field detectors

Ertugrul Cubukcu*, Fatih Degirmenci, Coskun Kocabas, Mariano A. Zimmler, John A. Rogers, Federico Capasso

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations

Abstract

Near-field scanning optical microscopes are widely used in imaging of subwavelength features in various material systems and nano-structures. For a variety of applications, polarization-sensitive near-field probes can provide valuable information on the nature and symmetry of the imaged nanoparticles and emitters. Conventional near-field optical microscopy lacks in-plane polarization sensitivity. Here, we use aligned single-wall carbon nanotubes as polarization-sensitive molecular scale probes to image the transverse near-field components of an optical Hertzian dipole antenna. Because of the Raman "antenna effect" in carbon nanotubes, only the near-field components along the nanotube axis are detected. These findings demonstrate that aligned carbon nanotubes can be used as polarization-sensitive near-field detectors.

Original languageEnglish (US)
Pages (from-to)2495-2499
Number of pages5
JournalProceedings of the National Academy of Sciences of the United States of America
Volume106
Issue number8
DOIs
StatePublished - Feb 24 2009

Keywords

  • Optical antenna
  • Plasmonics

ASJC Scopus subject areas

  • General

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