Fig. 4
From: Gap plasmonic properties of NPOM structures composed of gold nanoparticles and thin films
NPOM structure of vertical GENP and gold thin films. (a) Local field enhanced spectra at gap with different t. (b) The amplified local field enhanced spectrum in Fig. 4a, the t is 4–10 nm. (c) The maximum resonance peak and its wavelength of the local field enhanced spectrum corresponding to different t are shown in Fig. 4a. (d) The normalized value of the local field intensity on the horizontal line at the gap between the vertical GENP and the dielectric layer (white line coordinates of the illustration).
