110 citations · 278 across the 14 of their papers we have counts for
14 papers
Analytic Inverse Design of Temporal Metamaterials via Space-Time Duality
Giuseppe Castaldi, Marino Coppolaro, Massimo Moccia +3
Temporal metamaterials, created by modulating the refractive index in time, offer powerful means of controlling wave propagation but still lack a systematic design methodology. Her…
Exploring Aperiodic Order in Photonic Time Crystals
Marino Coppolaro, Massimo Moccia, Giuseppe Castaldi +1
We present a theoretical framework for analyzing aperiodically ordered photonic time quasicrystals (PTQCs), which are the temporal analogs of spatial photonic quasicrystals. Using…
Ghost line waves
Massimo Moccia, Giuseppe Castaldi, Andrea Alù +1
Time-harmonic electromagnetic plane waves in anisotropic media can exhibit complex-valued wavevectors (with nonzero real and imaginary parts) even in the absence of material dissip…
Spectral-domain method of moments for the modal analysis of line waveguides
Giampiero Lovat, Walter Fuscaldo, Massimo Moccia +3
A rigorous full-wave modal analysis based on the method of moments in the spectral domain is presented for line waveguides constituted by two-part impedance planes with arbitrary a…
Digital Reconfigurable Intelligent Surfaces: On the Impact of Realistic Reradiation Models
Marco Di Renzo, Abdelhamed Ahmed, Alessio Zappone +4
Reconfigurable intelligent surface (RIS) is an emerging technology that is under investigation for different applications in wireless communications. RISs are often analyzed and op…
Synthesizing quasi-bound states in the continuum in epsilon-near-zero layered materials
Giuseppe Castaldi, Massimo Moccia, Vincenzo Galdi
Bound states in the continuum (BIC) are highly confined, nonradiative modes that can exist in open structures, despite their potential compatibility and coupling with the radiation…
Exceptional Points in the Flatland: A Non-Hermitian Line-Wave Scenario
Massimo Moccia, Giuseppe Castaldi, Francesco Monticone +1
Line waves are recently discovered wave entities that are localized along two directions, and therefore can be viewed as the one-dimensional counterpart of surface waves. These wav…
Surface-Wave Propagation on Non-Hermitian Metasurfaces with Extreme Anisotropy
Marino Coppolaro, Massimo Moccia, Giuseppe Castaldi +2
Electromagnetic metasurfaces enable the advanced control of surface-wave propagation by spatially tailoring the local surface reactance. Interestingly, tailoring the surface resist…
Harnessing Spectral Singularities in Non-Hermitian Cylindrical Structures
Massimo Moccia, Giuseppe Castaldi, Andrea Alù +1
Non-Hermitian systems characterized by suitable spatial distributions of gain and loss can exhibit "spectral singularities" in the form of zero-width resonances associated to real-…
Transformation-Optics-Based Design of a Metamaterial Radome for Extending the Scanning Angle of a Phased Array Antenna
Massimo Moccia, Giuseppe Castaldi, Giuliana D'Alterio +3
We apply the transformation-optics approach to the design of a metamaterial radome that can extend the scanning angle of a phased-array antenna. For moderate enhancement of the sca…
Reconfigurable anisotropy and functional transformations with VO-based metamaterial electric circuits
Salvatore Savo, You Zhou, Giuseppe Castaldi +4
We demonstrate an innovative multifunctional artificial material that combines exotic metamaterial properties and the environmentally responsive nature of phase change media. The t…
Independent Manipulation of Heat and Electrical Current via Bifunctional Metamaterials
Massimo Moccia, Giuseppe Castaldi, Salvatore Savo +2
Spatial tailoring of the material constitutive properties is a well-known strategy to mold the local flow of given observables in different physical domains. Coordinate-transformat…
Enhanced Faraday Rotation via Resonant Tunnelling in Tri-Layers Containing Magneto-Optical Metals
Massimo Moccia, Giuseppe Castaldi, Vincenzo Galdi +2
We study resonant tunnelling effects that can occur in tri-layer structures featuring a dielectric layer sandwiched between two magneto-optical-metal layers. We show that the reson…
Optical isolation via unidirectional resonant photon tunneling
Massimo Moccia, Giuseppe Castaldi, Vincenzo Galdi +2
We show that tri-layer structures combining epsilon-negative and magneto-optical material layers can exhibit unidirectional resonant photon tunneling phenomena that can discriminat…