Figure 1
From: Large spontaneous emission rate enhancement in grating coupled hyperbolic metamaterials
Fabrication of GCHMM (a) Schematic of fabricated Ag diffraction grating coupled Ag/Al2O3 HMM (GCHMM), which consists of 6 pairs of Ag/Al2O3. (b) SEM image of 2D Ag diffraction grating on top of the PMMA layer with an average period of 500 nm and hole size of 160 nm.
