Figure 7.

Dispersion relation of GNW and decay length of GNW versus wavelength. (a) Dispersion relation of GNW (a = 30 nm) in medium of n = 1.25, d = 15 nm. Solid line: phase velocity, dashed line: group velocity, and symbols: the plasmon modes of GNR. (b) Decay length (line) of GNW and apparent quantum yield (bar) of GNR (AR = 6, 7, 8) versus wavelength.