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Quantifying Fano properties in self-assembled metamaterials

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Extreme Wave Manipulation with Parity-Time Symmetric Metasurfaces

Romain Christophe Rémy Fleury

We study the unique wave manipulation capabilities of Parity-Time symmetric pairs of metasurfaces operated at exceptional point conditions. We demonstrate theoretically and experimentally the relevance of these systems to induce wave phenomena typically ob ...

2016

Gas sensor

Gaël André Léon Farine, Conor Joseph Slater

Gas sensor (2) for measuring properties of a gas (1), including a gas viscosity sensor (4) comprising a gas interface portion (20) in contact with the gas (1) to be measured, and a measuring chamber system (15) comprising a measuring chamber(16), a first r ...

2016

The evaluation of scientific research is crucial for both the academic community and society as a whole. Numerous bibliometric indices have been proposed for the ranking of research performance, mainly on an ad hoc basis. We introduce the novel class of Sc ...

Wiley-Blackwell2016

Breaking Temporal Symmetries in Acoustic Metamaterials

Romain Christophe Rémy Fleury

We discuss our recent investigations on breaking time-reversal and spatio-temporal symmetries to provide novel functionalities in the field of metamaterials, with special emphasis on the field of acoustics and sound manipulation. ...

2015

Device and method for testing a material response to a compound

Philippe Renaud, Robert Meissner

Device for testing a material response, such as a tissue response, to a compound; said device comprising material impedance measuring means which are adapted to measure the material impedance at the compound action site. ...

2015

Anatomy of a Drop-Off Reading Curve

Frédéric Kaplan, Cyril Antoine Michel Bornet

Not all readers finish the book they start to read. Electronic media allow to us to measure more precisely how this “drop-off” effect unfolds as readers are reading a book. A curve showing how many people have read each chapter of a book is likely to be pr ...

2015

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SDN deployments rely on switches that come from various vendors and differ in terms of performance and available features. Understanding these differences and performance characteristics is essential for ensuring successful deployments. In this paper we me ...

Springer-Verlag Berlin2015

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

Interaction between meta-materials and shallow donors in bulk GaN at THz frequency

Nicolas Grandjean, Etienne François Olivier Giraud, Jérôme Faist

We report the coupling and interaction between shallow donors and microcavities in bulk GaN at THz frequencies. At 4K, the shallow donors lead to an absorption at 23.5 meV (5.7 THz) under optical pumping above the bandgap of GaN. The microcavities are base ...

Optical Soc Amer2014

Parity-time symmetric metamaterials and metasurfaces for loss-immune and broadband acoustic wave manipulation

Romain Christophe Rémy Fleury

We explore the largely uncharted scattering properties of acoustic systems that are engineered to be invariant under a special kind of space-time symmetry, consisting in taking their mirror image and running time backwards. Known as Parity-Time symmetry, t ...

2014