Figure 15.

Left: Setup for Raman measurements used. Middle: Normalized intensity of the 1079 cm⁻¹ band of 4-mercaptobenzonitrile (MBN) adsorbed on anisotropic Ag nanoparticle arrays created by metal evaporation on rippled silicon substrates as a function of $\theta$ obtained with the 514 nm (green triangles) and the 647 nm (red squares) excitation. The respective solid lines correspond to fits of a ${\cos }^2\theta$ (green) and ${\sin }^2\theta$ (red) function to the data. Right: Imaginary part of the effective dielectric function of the Ag film parallel and perpendicular to the long axis of the ripples. Adapted with permission from [116]. Copyright 2016 American Chemical Society.