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Engineering Metamaterials and Photonic Crystals in the Microwave Regime: from Superlensing to Slow-Light [PDF]
, 2009 The following work involves the study of electromagnetic properties at the microwave frequency range of a class of materials called Metamaterials. A metamaterial is an artificial composite material that exhibits an electromagnetic response unlike any ...
Savo, Salvatore
core +1 more source
Bringing the ‘perfect lens’ into focus by near-perfect compensation of losses without gain media
New Journal of Physics, 2016 In this paper, the optical properties and imaging performance of a non-ideal Pendry’s negative index flat lens with a practical value for loss are studied. Analytical calculations of the optical properties of the lens are performed, and those results are
Wyatt Adams +3 more
doaj +1 more source
Analytic Sinusoidal Steady-State Electromagnetic Field Expressions for the Ideal Veselago Lens
IEEE Open Journal of Antennas and Propagation, 2021 Analytic expressions for the sinusoidal steady-state electromagnetic field associated with an ideal Veselago lens illuminated by either a line-source (2D case) or an electric dipole point-source (3D case) are obtained based on power flow considerations ...
Marzieh Eini Keleshteri +2 more
doaj +1 more source
Metamaterial slab as a lens, a cloak, or an intermediate [PDF]
Physical Review B, 2011 We show that a metamaterial slab with arbitrary values of $\ensuremath{\varepsilon}$ and $\ensuremath{\mu}$ behaves as a cloak at a finite frequency for a small object located sufficiently close to it due to the suppression of the object's optical excitations by enhanced reflections.
Dong, Jian-Wen +4 more
openaire +2 more sources
Characterisation at infrared wavelengths of metamaterials formed by thin-film metallic split-ring resonator arrays on silicon [PDF]
, 2006 The infrared reflectance spectra at normal incidence for split-ring resonator arrays fabricated in thin films of three different metals on a silicon substrate are reported.
Khokhar, A.Z. +8 more
core +1 more source
Menger fractal structure with negative refraction and sound tunnelling properties
Materials Research Express, 2019 We construct new quasi-three-dimensional fractal acoustic metamaterials based on adoption of the Menger structure, which offers extraordinary parameters such as double-negative properties and a near-zero density.
Yu Liu +6 more
doaj +1 more source
Chiral Metasurface Multifocal Lens in the Terahertz Band Based on Deep Learning
Micromachines, 2023 Chiral metasurfaces have garnered significant interest as an emerging field of metamaterials, primarily due to their exceptional capability to manipulate phase distributions at interfaces.
Jingjing Wang +5 more
doaj +1 more source
Hybrid SRRs Design and Fabrication for Broadband Terahertz Metamaterials
IEEE Photonics Journal, 2012 Hybrid metamaterials comprising split-ring resonator (SRR) structures with different gap dimensions are fabricated on polyethylene naphthalate (PEN) films by parallel laser micro-lens array (MLA) lithography and a liftoff process. The unit cell of hybrid
Z. Y. Pan +4 more
doaj +1 more source
Nanophotonics, 2023 The concept of metamaterials offers a flexible pathway to manipulate the macroscopic behavior of light by delicately designed microscopic subwavelength structures, which has been recently introduced to integrated photonics to create devices with ultra ...
Ma Wei +6 more
doaj +1 more source
Enhancement of Microwave Imaging Using a Metamaterial Lens
IEEE Sensors Journal, 2019 Microwave far-field imaging techniques are well suited to image source, scatterers, and anomalies in dielectric or composite materials. However, the diffraction limits restrict the resolution of far-field imaging. This contribution focuses on the feasibility of designing a metamaterial lens based sensor for enhancing the resolution of microwave far ...
Saptarshi Mukherjee +4 more
openaire +2 more sources