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Electromagnetic tunneling through a single-negative slab paired with a double-positive bi-layer
Giuseppe Castaldi, Ilaria Gallina, Vincenzo Galdi +2
We show that resonant tunneling of electromagnetic fields can occur through a three-layer structure composed of a single-negative (i.e., either negative-permittivity or negative-pe…
The nature of transmission resonances in plasmonic metallic gratings
G. D'Aguanno, N. Mattiucci, M. J. Bloemer +3
Using the Fourier modal method (FMM) we report our analysis of the transmission resonances of a plasmonic grating with sub-wavelength period and extremely narrow slits for waveleng…
Analytical study of spherical cloak/anti-cloak interactions
Giuseppe Castaldi, Ilaria Gallina, Vincenzo Galdi +2
The intriguing concept of "anti-cloaking" has been recently introduced within the framework of transformation optics (TO), first as a "countermeasure" to invisibility-cloaking (i.e…
Transformation-optics generalization of tunnelling effects in bi-layers made of paired pseudo-epsilon-negative/mu-negative media
Giuseppe Castaldi, Ilaria Gallina, Vincenzo Galdi +2
Transformation-media designed by standard transformation-optics (TO) approaches, based on real-valued coordinate-mapping, cannot exhibit single-negative (SNG) character unless such…
Power scattering and absorption mediated by cloak/anti-cloak interactions: A transformation-optics route towards invisible sensors
Giuseppe Castaldi, Ilaria Gallina, Vincenzo Galdi +2
The suggestive idea of "cloaking" an electromagnetic sensor, i.e., strongly reducing its visibility (scattering) while maintaining its field-sensing (absorption) capabilities, has…