Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Detailed analysis of the mean diameter and diameter distribution of
  single wall carbon nanotubes from their optical response   We report a detailed analysis of the optical properties of single wall carbon
nanotubes with different mean diameters as produced by laser ablation. From a
combined study of optical absorption, high resolution electron energy-loss
spectroscopy in transmission and tight binding calculations we were able to
accurately determine the mean diameter and diameter distribution in bulk SWCNT
samples. In general, the absorption response can be well described assuming a
Gaussian distribution of nanotube diameters and the predicted inverse
proportionality between the nanotube diameter and the energy of the absorption
features. A detailed simulation enabled not only a determination of the mean
diameter of the nanotubes, but also gives insight into the chirality
distribution of the nanotubes. The best agreement between the simulation and
experiment is observed when only nanotubes within 15$^\circ$ of the armchair
axis are considered. The mean diameters and diameter distributions from the
optical simulations are in very good agreement with the values derived from
other bulk sensitive methods such as electron diffraction, x-ray diffraction
and Raman scattering.

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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
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The categories of this paper are: solv-int
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The categories of this paper are: econ
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The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
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The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: acc-phys
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The categories of this paper are: q-bio
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The categories of this paper are: hep-lat
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The categories of this paper are: physics
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The categories of this paper are: astro-ph