Chemically Doped Double-Walled Carbon Nanotubes: Cylindrical Molecular Capacitors

Gugang Chen, S. Bandow, E. R. Margine, C. Nisoli, A. N. Kolmogorov, Vincent H. Crespi, R. Gupta, G. U. Sumanasekera, S. Iijima, P. C. Eklund

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


A double-walled carbon nanotube is used to study the radial charge distribution on the positive inner electrode of a cylindrical molecular capacitor. The outer electrode is a shell of bromine anions. Resonant Raman scattering from phonons on each carbon shell reveals the radial charge distribution. A self-consistent tight-binding model confirms the observed molecular Faraday cage effect, i.e., most of the charge resides on the outer wall, even when this wall was originally semiconducting and the inner wall was metallic.

Original languageEnglish (US)
Pages (from-to)4
Number of pages1
JournalPhysical review letters
Issue number25
StatePublished - 2003

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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