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Science 28 April 2006:
Vol. 312. no. 5773, pp. 554 - 556
DOI: 10.1126/science.1124602
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Reports

Optical Spectroscopy of Individual Single-Walled Carbon Nanotubes of Defined Chiral Structure

Matthew Y. Sfeir,1,6* Tobias Beetz,5 Feng Wang,2 Limin Huang,3 X. M. Henry Huang,4 Mingyuan Huang,4 J. Hone,4 Stephen O'Brien,3 J. A. Misewich,6 Tony F. Heinz,2 Lijun Wu,5 Yimei Zhu,5 Louis E. Brus1

We simultaneously determined the physical structure and optical transition energies of individual single-walled carbon nanotubes by combining electron diffraction with Rayleigh scattering spectroscopy. These results test fundamental features of the excited electronic states of carbon nanotubes. We directly verified the systematic changes in transition energies of semiconducting nanotubes as a function of their chirality and observed predicted energy splittings of optical transitions in metallic nanotubes.

1 Department of Chemistry, Columbia University, 3000 Broadway, New York, NY 10027, USA.
2 Department of Physics and Electrical Engineering, Columbia University, 3000 Broadway, New York, NY 10027, USA.
3 Department of Applied Physics and Applied Mathematics, Columbia University, 3000 Broadway, New York, NY 10027, USA.
4 Department of Mechanical Engineering, Columbia University, 3000 Broadway, New York, NY 10027, USA.
5 Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA.
6 Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY 11973, USA.

* To whom correspondence should be addressed. E-mail: msfeir{at}bnl.gov

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Probing the Chiroptical Response of a Single Molecule.
R. Hassey, E. J. Swain, N. I. Hammer, D. Venkataraman, and M. D. Barnes (2006)
Science 314, 1437-1439
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Science. ISSN 0036-8075 (print), 1095-9203 (online)