Fig. 3
From: Type-I hyperbolic metasurfaces for highly-squeezed designer polaritons with negative group velocity
Dependence of designer polaritons on metasurface parameters. a Dispersions of the metasurfaces with different substrate thicknesses. b Dispersions of the metasurfaces with different substrate permittivity. c Maximum squeezing factor as a function of numbers of turns. Here, we alter the numbers of turns while maintaining the other parameters (except the period) the same. Therefore, the period becomes longer as the number of turns increases. d Dispersions of the metasurfaces with different periods. The coils keep the same and the distance between neighbor coils changes
