210 citations · 323 across the 3 of their papers we have counts for
5 papers
Geometry-Invariant Resonant Cavities
Iñigo Liberal, Ahmed M. Mahmoud, Nader Engheta
Resonant cavities are one of the basic building blocks in various disciplines of science and technology, with numerous applications ranging from abstract theoretical modeling to ev…
"Static" Optics
Ahmed M. Mahmoud, Nader Engheta
In recent years, the concept of metamaterials has offered platforms for unconventional tailoring and manipulation of the light-matter interaction. Here, we explore the notion of "s…
All-Passive Nonreciprocal Metasurface
Ahmed M. Mahmoud, Arthur R. Davoyan, Nader Engheta
We introduce a systematic approach to design all-passive subwavelength high performance metasurfaces that exhibit nonreciprocal properties and achieve wave-flow isolation. Moreover…
One-way Phonon Isolation In Acoustic Waveguides
Mehdi B. Zanjani, Arthur R. Davoyan, Ahmed M. Mahmoud +2
We present a method to achieve one-way mode isolation in acoustic waveguides by considering spatio-temporal modulation of material properties. Mode conversion between symmetric and…
Optical isolation with epsilon-near-zero metamaterials
Arthur R. Davoyan, Ahmed Mahmoud, Nader Engheta
We suggest a principle for isolation of circularly polarized waves in magnetically active extreme-parameter metamaterials. Using theoretical analysis and numerical simulations, we…