Dressing Plasmons in Particle-in-Cavity Architectures

The Effect of Ag Nanoparticles on Surface-Enhanced Luminescence from Au Nanovoid Arrays

“…The resulting structures have nanovoid architecture such as those reported here. These nanovoid structured surfaces possess spherical cap architecture and are arranged uniformly in a hexagonally close-packed array [16][17][18][19][20][21][22][23][24][25].…”

“…Several studies have been reported demonstrating SERS using nanovoid substrates [17][18][19][20][21][22][23][24]. Baumberg et al [22] showed strong correlations between plasmon resonances and Raman enhancements by studying different void dimensions as a function of incident angle.…”

“…Combining both Au and Ag into single nanostructured substrates has been the topic of some studies in which a Ag or Au layer was placed over a Au structured surface. This reported enhancements in SERS signal [18,24]. Huang et al [24] investigated the field enhancement gained when an Au NP was placed inside an Au nanovoid at a range of distances from the curved inner surface of the void.…”

“…This reported enhancements in SERS signal [18,24]. Huang et al [24] investigated the field enhancement gained when an Au NP was placed inside an Au nanovoid at a range of distances from the curved inner surface of the void. Following this Speed et al [26] studied the effect of Ag NPs added to an Au substrate on the SERS signal of adsorbed 4-mercaptoaniline and 4-mercaptobenzoic acid.…”

Metal plasmonic nanoarrays for surface-enhanced Raman spectroscopy and applications of atomic layer deposition

“…For example, a particle-in-cavity structure has been demonstrated to produce extremely high local field enhancements because of the cascaded focusing of the optical cross sections into small gaps, as shown in Figure 1.8 (a). 65…”