3-D metamaterials: Trends on applied designs, computational methods and fabrication techniques

A Alex-Amor, Á Palomares-Caballero, C Molero - Electronics, 2022‏ - mdpi.com
Metamaterials are artificially engineered devices that go beyond the properties of
conventional materials in nature. Metamaterials allow for the creation of negative refractive …

All-angle reflectionless negative refraction with ideal photonic Weyl metamaterials

Y Liu, GP Wang, JB Pendry, S Zhang - Light: Science & Applications, 2022‏ - nature.com
Negative refraction, an unnatural optical phenomenon in which the incident and the
refracted waves reside on the same side of the surface normal, has been demonstrated with …

Nontrivial point-gap topology and non-Hermitian skin effect in photonic crystals

J Zhong, K Wang, Y Park, V Asadchy, CC Wojcik… - Physical Review B, 2021‏ - APS
We show that two-dimensional non-Hermitian photonic crystals made of lossy material can
exhibit nontrivial point-gap topology in terms of topological winding in its complex frequency …

Efficient mode transfer on a compact silicon chip by encircling moving exceptional points

Q Liu, S Li, B Wang, S Ke, C Qin, K Wang, W Liu… - Physical Review Letters, 2020‏ - APS
Exceptional points (EPs) are branch point singularities of self-intersecting Riemann sheets,
and they can be observed in a non-Hermitian system with complex eigenvalues. It has been …

[HTML][HTML] Three-dimensional acoustic metamaterial Luneburg lenses for broadband and wide-angle underwater ultrasound imaging

JW Kim, G Hwang, SJ Lee, SH Kim, S Wang - Mechanical Systems and …, 2022‏ - Elsevier
This paper introduces spherical and ellipsoidal metamaterial lenses designed based on the
Luneburg lens and transformation optics for underwater ultrasound imaging, which …

Characteristics of multi-absorption bands in near IR based on a 1D photonic crystal comprising two composite metamaterials

M Medhat, A Mehaney, M Al-Dossari, AH Aly… - Scientific Reports, 2024‏ - nature.com
The Matlab program has been utilized in this study to examine the absorption spectral
properties of a one-dimensional photonic crystal (1DPCs) comprising two composite …

Manipulating the flow of light using Dirac-cone zero-index metamaterials

DI Vulis, O Reshef, P Camayd-Muñoz… - Reports on Progress in …, 2018‏ - iopscience.iop.org
Metamaterials with a refractive index of zero exhibit properties that are important for
integrated optics. Possessing an infinite effective wavelength and zero spatial phase …

Multimode non-Hermitian framework for third harmonic generation in nonlinear photonic systems comprising two-dimensional materials

T Christopoulos, EE Kriezis, O Tsilipakos - Physical Review B, 2023‏ - APS
Resonant structures in modern nanophotonics are non-Hermitian (leaky and lossy), and
support quasinormal modes. Moreover, contemporary cavities frequently include two …

Low-dam** epsilon-near-zero slabs: Nonlinear and nonlocal optical properties

D de Ceglia, S Campione, MA Vincenti, F Capolino… - Physical Review B …, 2013‏ - APS
We investigate second-harmonic generation, low-threshold multistability, all-optical
switching, and inherently nonlocal effects due to the free-electron gas pressure in an epsilon …