Figure 3
From: Cloaking, trapping and superlensing of lamb waves with negative refraction
Cloaking by an anti-object. (a,b) Experimental configuration for the reference and complementary plates, respectively. (c–e) FDTD numerical simulation (SimSonic3D software33, www.simsonic.fr). The real part of the wave-field obtained in the reference (c) and complementary (d) plates is displayed at the crossing frequency \(f_c\) (see Fig. 2). (e) Evolution of the Strehl ratio \(\mathcal {S}(x)\) (Eq. 1) across the reference (blue) and complementary (red) plate. (f–h) Experimental result. The real part of the wave-field obtained in the reference (f) and complementary (g) plates is displayed at the crossing frequency \(f_c\). h Evolution of \(\mathcal {S}(x)\) across the reference (blue) and complementary (red) plate.
