Ultra-High and Near-Zero Refractive Indices of Magnetron Sputtered Thin-Film Metamaterials Based on Ti_xO_y

Figure 7

Dependence as a function of radiation energy for (a) sample 1, (b) sample 2, and (c) sample 3 ((A) direct transition () and (B) indirect transition ()).

(a)

(b)

(c)