Absorption spectrum for small systems. (Color Online) Absorption coefficient for x (black curves), y (red curves), and z (blue lines) polarizations for (a) a nanodisk with 258 atoms, (b) a single-pentagon nanocone composed of 245 atoms, and (c) a two-pentagon nanocone with 246 atoms. The photon energies are given in units of . Curves in each panel are vertically shifted, for better visualization of different polarization results.
Ulloa et al. Nanoscale Research Letters 2013 8:384 doi:10.1186/1556-276X-8-384