Figure 7
From: On the Large Near-Field Enhancement on Nanocolumnar Gold Substrates
Schematic representation of the experimental setup for the growth of gold nanostructured porous thin films by GLAD magnetron sputtering, where σ is the tilt angle between the Si substrate and the normal direction to the Au target. Nanocolumns longitudinal (L) and transversal (D) dimensions are depicted in the inset along with the angle θ between the longitudinal dimension of the nanocolumns and the Si substrate and the distance (H) between the outer edge of the nanoparticles and the Si substrate (film thickness).
