Research / 2019 / Article / Fig 1

Research Article

Conformally Mapped Multifunctional Acoustic Metamaterial Lens for Spectral Sound Guiding and Talbot Effect

Figure 1

Mapping Maxwell’s fish-eye lens to Mikaelian lens. (a) The refractive index distribution of two-dimensional Maxwell’s fish-eye lens. (b) Acoustic wave propagation inside the fish-eye lens. Rays emitted from point A will travel along the orange lines and converge at point B. (c) The refractive index distribution of the mapped two-dimensional Mikaelian lens. (d) Acoustic wave propagation inside the Mikaelian lens for a single period. (e) The predicted analytical propagating trajectories for beams with different incident positions (indicated by different colors) inside the Mikaelian lens. In all the plots, () indicates the coordinate vector in virtual space and () represents that in physical space.