Phys.org June 13, 1023
So far, most efforts in invisibility science have been devoted to achieving practically realizable cloak designs and to improving the effectiveness of these devices in reducing their scattering cross-section. Little attention has been paid to the opposite side of the technology – the development of more efficient techniques for the detection of invisibility devices. Researchers in Spain proposed a path taking advantage of the smarter way in which diffraction tomography processes all overlooked information to improve the efficiency in unveiling the presence of invisibility devices. This approach not only resulted in a considerable sensitivity enhancement in the detection of different kinds of cloaks based on both scattering cancellation and transformation optics, but also enabled them to obtain images depicting the approximate shape and size of the cloak. The proposed method could be extended to the detection of sound cloaks… read more. Open Access TECHNICAL ARTICLE
Scheme of the difference between the SCS and DT detection techniques… Credit: Laser and Photonics Reviews, 03 December 2022Â