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Extreme Wave Manipulation with Parity-Time Symmetric Metasurfaces

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Parity-Time-Symmetric Metasurfaces and Metamaterials

Romain Christophe Rémy Fleury

Metamaterials are artificially structured materials possessing exotic electromagnetic or acoustic properties that are not readily available in nature, for instance synthesizing negative, zero, or very large index of refraction. Their exotic features are ty ...

2014

Closed-cell crystalline foams: Self-assembling, resonant metamaterials

Alessandro Spadoni, Vladimir Dorodnitsyn

Internal degrees of freedom and periodic structure are critical requirements in the design of acoustic/elastic metamaterials since they can give rise to extraordinary properties like negative effective mass and stiffness. However, they are challenging to r ...

Acoustical Soc Amer Amer Inst Physics2014

Metamaterial buffer for broadband non-resonant impedance matching of obliquely incident acoustic waves

Romain Christophe Rémy Fleury

Broadband impedance matching and zero reflection of acoustic waves at a planar interface between two natural materials is a rare phenomenon, unlike its optical counterpart, frequently observed for polarized light incident at the Brewster angle. In this art ...

Acoustical Society of America2014

Acoustic Leaky-Wave Antenna

Hervé Lissek, Sami Driss Karkar, Seyyed Hussein Seyyed Esfahlani

In the last years, the number of studies carried out in the field of acoustic metamaterials has significantly increased. In year 2009, our group proposed a concept of acoustic composite right/left hand transmission line (CRLH-TL) metamaterial, consisting o ...

2014

Absorption modulation of terahertz metamaterial by varying the conductivity of ground plane

Gabriel Aeppli, Joe Martin Bailey, Wanli Ma

Most research focuses on varying the resonator and dielectric spacer to configure the absorption and resonant frequency of terahertz (THz) metamaterial absorbers (MAs), where a metal ground plane is used as a perfect reflector of incident THz waves. In thi ...

Amer Inst Physics2014

Superconductivity-Induced Transparency in Terahertz Metamaterials

Odeta Limaj

A plasmonic analogue of electromagnetically induced transparancy is activated and tuned in the terahertz (THz) range in asymmetric metamaterials fabricated from high critical temperature (T-c) superconductor thin films. The asymmetric design provides a nea ...

Amer Chemical Soc2014

Periodicity-Induced Symmetry Breaking in a Fano Lattice: Hybridization and Tight-Binding Regimes

Olivier Martin, Chen Yan

We investigate experimentally and theoretically the role of periodicity on the optical response of dolmen plasmonic arrays that exhibit a Fano line shape. Contrary to previous works on single nanostructures, this study deals with the in-plane near-field co ...

American Chemical Society2014

Cloaking and invisibility: A review

Romain Christophe Rémy Fleury

Invisibility has been a tantalizing concept for mankind over several centuries. With recent developments in metamaterial science and nanotechnology, the possibility of cloaking objects to incoming electromagnetic radiation has been escaping the realm of sc ...

2014

Cloaking and Invisibility: a Review

Romain Christophe Rémy Fleury

2014

Automated optimization of photonic crystal slab cavities

Vincenzo Savona, Momchil Minkov

Thanks to their high quality factor, combined to the smallest modal volume, defect-cavities in photonic crystal slabs represent a promising, versatile tool for fundamental studies and applications in photonics. In paricular, the L3, H0, and H1 defects are ...

Nature Publishing Group2014