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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/17367


    Title: Optical excitations in carbon nanoscrolls
    Authors: 李道聖
    Date: 2011-04
    Issue Date: 2012-09-07 10:08:44 (UTC+8)
    Abstract: 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.
    Relation: Physical Chemistry Chemical Physics, 13, 6138-6144
    Appears in Collections:[電機工程系所] 期刊論文

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