2007/10/31 by Baile Zhang, Hongsheng Chen, Bae‐Ian Wu +2 · 1 citation
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Electromagnetic Scattering and Analysis #Metamaterials and Metasurfaces Applications #physics.optics
paper · pdf · doi:10.1103/physrevlett.100.063904
published as Physical Review Letters, 100, 063904 (2008)
openalex publication_date 2008/02/15 · arxiv created 2008/02/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The electromagnetic field solution for a spherical invisibility cloak with an active device inside is established. Extraordinary electric and magnetic surface voltages are induced at the inner boundary of a spherical cloak, which prevent electromagnetic waves from going out. The phase and handness of polarized waves obliquely incident on such boundaries are kept in the reflected waves. The surface voltages due to an electric dipole inside the concealed region are found equal to the auxiliary scalar potentials at the inner boundary, which consequently gain physical counterparts in this case.