Figure 2.

$M_{Loc}^Z$ ($M_{Loc}^{}$ in the figure) and $M_{Rad}$ as a function of the wavelength are shown in panel (a,b), respectively. The molecule is placed 1 nm away from the surface of the silver nanoparticle (25 nm radius), along the direction in which the excitation laser is polarized ($Z$). Concerning the re-emission enhancement, $M_{Rad}$ is the power emitted by the dipole integrated over the whole solid angle of emission; the molecular dipole can be oriented either parallel ($\parallel$) or perpendicular ($\perp )$ to the surface. Reproduced with permission from Le Ru et al. [6]. Copyright (2009), Elsevier B.V.