Figure 8
From: Molding acoustic, electromagnetic and water waves with a single cloak
Experimental results for microwaves at the edges of the cloaking interval [2.6,6]GHz.
The normalized modulus (upper panel) and the normalized real part (middle panel) of the magnetic field is measured for the source at 2.6 and 6 GHz. One notes that the magnetic field intensity is reduced by 18.5 dB and 13 dB at the center of the cloak with a reduction varying in the range [11.5,35] and dB [8.5,17] dB inside the inner disc, respectively at 2.6 and 6 GHz. The field is enhanced inside the corona and both wavefront and field amplitude is better reconstructed behind the cloak at 6 GHz. Notably the measured intensity is −18 dB and −17 dB at the left side, respectively at 2.6 and 6 GHz and −1 dB at the right side, of the intensity panels. Protection is clearly more pronounced at 2.6 GHz than 6 GHz.
