Designing 2D Phononic Crystal Slabs with Transmission Gaps for Solid Angle as well as Frequency Variation

Figure 1

Horizontal 𝑥𝑦 coordinates and a 𝑧 depth coordinate axis are introduced. There are three scatterer interfaces in this illustration. The medium is periodic with period 𝑑 in the 𝑥 direction, although only finitely many cylindrical scatterers are shown at each interface, and the cylinder axes are parallel to the y-axis.