759830.fig.002a
(a)
759830.fig.002b
(b)
Figure 2: The calculation of Gans theory for gold nanorods. (a) Dependence of the absorbance spectrum on aspect ratio for a constant dielectric constant of the medium (inset: peak wavelength increases linearly with aspect ratio). (b) Dependence of the absorbance spectrum on the dielectric constant of the medium for a constant aspect ratio (inset: peak wavelength increases linearly with dielectric constant). Reprinted with permission from [11]. Copyright 1999 American Chemical Society.