Optical excitations in carbon nanoscrolls

To Sing Li, Ming Fa Lin, Shang Chou Chang, Hsien Ching Chung

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


The optical properties of carbon nanoscrolls in the presence of uniform electric fields are investigated by using gradient approximation. Absorption spectra exhibit rich prominent peaks structures, which is caused by one-dimensional sub-bands. The numbers, spectral intensities, and energies of the absorption peaks are strongly dependent on the geometry and the electric field strength. There exists an optical selection rule originating from the two equivalent sublattices in graphene. The two-fold degeneracy of the absorption peaks can be lifted by the inter-wall interactions or the electric field. The variations of the absorption peak energies with the geometry and field strength are also explored. These theoretical predictions can be validated by optical absorption measurements.

Original languageEnglish
Pages (from-to)6138-6144
Number of pages7
JournalPhysical Chemistry Chemical Physics
Issue number13
Publication statusPublished - 2011 Apr 7

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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