Fig. 4: The proposed waveguide strategy for arbitrary routes at 15 kHz.
From: Realization of ultrathin waveguides by elastic metagratings
a Simulated energy fields of a “N”-shaped waveguide with width l = 0.82λ. The radius of curvature is 2.8λ. S refers to the location of point source. b “U”-shaped waveguide with width l = 1.47λ. The radius of curvature is 3.3λ. S refers to the location of point source. c Two adjacent waveguide paths with a distance of 2\(\lambda\) (l = 0.82λ). The radius of curvature is 2.9λ. Two point sources are placed on S1 and S2. d Wave splitting by a waveguide junction (l = λ). The radius of curvature is 3.2λ. S refers to the location of point source.
