Prof. Andrea Alù’s and PhD candidate Francesco Monticone’s research paper titled ‘Invisibility Exposed: Physical Bounds on Passive Cloaking’ will be published in the Optical Society’s flagship journal Optica in the upcoming issue. Together, Prof.
Metamaterials and artificial materials with effective properties that may be controlled to a large degree have been at the basis of exciting schemes for wave manipulation and are particularly well suited to hide an object from electromagnetic waves. To realize practical invisibility cloaks, transformation electromagnetics (TE) methods and scattering cancellation techniques are currently the most popular approaches. Simplified versions of these proposals have been implemented and examined in recent years.