Gap Nanoantennas toward Molecular Plasmonic Devices
Figure 14
(a) SEM image of gold nanoantennas after FIB milling through the Cr layer and the respective images in (b) transmission and (c) fluorescence microscopy. Color scaling in (b, c) is identical to that in Figure 2 to highlight the intensity increase. The fluorescence image has been built from a red and a green channel-denoting orthogonal polarization directions. (d) Intensity profile along the white line drawn in (c) indicating that fluorescence spots are diffraction limited.
