Figure 5: Experimental realization of gold SBRs.
From: Split-ball resonator as a three-dimensional analogue of planar split-rings
(a,b) HIM images of two gold nanoparticles with similar diameters of 170 nm and cuts width of 15 nm. Cut depth in (a) is larger than in (b), which is obtained by 25% longer helium ion beam milling time. Scale bars correspond to 100 nm. (c,d) Scattering spectra of the particles shown in (a,b) for incident light with s (perpendicular to the cut) and p (parallel to the cut) polarizations. LC labels show spectral position of the LC resonance. It is observed at 650 nm in (c) and 600 nm in (d).
