Figure 7.

Absorption spectrum for large systems. (Color Online) Absorption coefficient for x (black curves), y (red curves), and z (blue lines) polarizations for (a) a nanodisk with 5,016 atoms, (b) a single-pentagon nanocone composed of 5,005 atoms, and (c) a two-pentagon nanocone with 5,002 atoms. The photon energies are given in units of <a onClick="popup('http://www.nanoscalereslett.com/content/8/1/384/mathml/M63','MathML',630,470);return false;" target="_blank" href="http://www.nanoscalereslett.com/content/8/1/384/mathml/M63">View MathML</a>.

Ulloa et al. Nanoscale Research Letters 2013 8:384   doi:10.1186/1556-276X-8-384
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