Single-walled carbon nanotubes as excitonic optical wires

Daniel Y. Joh, Jesse Kinder, Lihong H. Herman, Sang Yong Ju, Michael A. Segal, Jeffreys N. Johnson, Garnet K.L. Chan, Jiwoong Park

Research output: Contribution to journalArticle

56 Citations (Scopus)


Although metallic nanostructures are useful for nanoscale optics, all of their key optical properties are determined by their geometry. This makes it difficult to adjust these properties independently, and can restrict applications. Here we use the absolute intensity of Rayleigh scattering to show that single-walled carbon nanotubes can form ideal optical wires. The spatial distribution of the radiation scattered by the nanotubes is determined by their shape, but the intensity and spectrum of the scattered radiation are determined by exciton dynamics, quantum-dot-like optical resonances and other intrinsic properties. Moreover, the nanotubes display a uniform peak optical conductivity of ∼8 e2/h, which we derive using an exciton model, suggesting universal behaviour similar to that observed in nanotube conductance. We further demonstrate a radiative coupling between two distant nanotubes, with potential applications in metamaterials and optical antennas.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalNature Nanotechnology
Issue number1
Publication statusPublished - 2011 Jan

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Atomic and Molecular Physics, and Optics
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Single-walled carbon nanotubes as excitonic optical wires'. Together they form a unique fingerprint.

  • Cite this

    Joh, D. Y., Kinder, J., Herman, L. H., Ju, S. Y., Segal, M. A., Johnson, J. N., Chan, G. K. L., & Park, J. (2011). Single-walled carbon nanotubes as excitonic optical wires. Nature Nanotechnology, 6(1), 51-56.