Publications related to From Polarizability to Effective Permittivity of Time-Varying Materials

Optimization of an acoustic leaky-wave antenna based on acoustic metamaterial

Hervé Lissek, Sami Driss Karkar, Seyyed Hussein Seyyed Esfahlani

In recent years, an increasing number of pioneering studies have been carried out in the field of acoustic metamaterials, following the path of electromagnetic metamaterials. These artificial engineered materials are designed in such a way so as to achieve ...

2013

Enhanced second-harmonic generation from double resonant plasmonic antennae

Olivier Martin, Andrea Lovera, Krishnan Thyagarajan, Simon Rivier

We present a novel plasmonic antenna geometry - the double resonant antenna (DRA) - that is optimized for second-harmonic generation (SHG). This antenna is based on two gaps coupled to each other so that a resonance at the fundamental and at the doubled fr ...

2012

A MATLAB-based tool for visualizing the plane wave propagation in multilayer structures containing metamaterials

Juan Ramon Mosig

The paper reports on a graphical user interface developed in MATLAB to aid the visualization of the plane wave impinging from a lossless half-space onto a multilayer structure. Individual layers are assumed to be homogeneous and isotropic with electric per ...

2012

A bottom-up approach to fabricate optical metamaterials by self-assembled metallic nanoparticles

Toralf Scharf

We introduce a novel bottom-up approach to fabricate by self assembly a metamaterial from metallic nanoparticles in a two-step process. In the first step, a metamaterial made of densely packed silver nanoparticles is required. The material dispersion with ...

2012

Epigenetic regulation of gene expression in physiological and pathological brain processes

Johannes Gräff

Over the past decade, it has become increasingly obvious that epigenetic mechanisms are an integral part of a multitude of brain functions that range from the development of the nervous system over basic neuronal functions to higher order cognitive process ...

2011

Digital Reverse Propagation in Focusing Kerr Media

Demetri Psaltis, Alexandre Goy

We report experimental image reverse propagation in focusing Kerr media. These results are compared with a linear Zernike filter operation. A method for the measurement of the nonlinear coefficient is derived from these results. (C) 2010 Optical Society of ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Shift-Invariant Spaces from Rotation-Covariant Functions

Michaël Unser, Dimitri Nestor Alice Van De Ville, Thierry Blu

We consider shift-invariant multiresolution spaces generated by rotation-covariant functions ρ in

\mathbb{R}^{ 2 }

. To construct corresponding scaling and wavelet functions, ρ has to be localized with an appropriate multiplier, such that the localized ...

Elsevier2008

CMOS realization of two-dimensional mixed analog-digital Hamming distance discriminator circuits for real-time imaging applications

Alexandre Schmid, Yusuf Leblebici, Stéphane Badel

The architecture of an integrated Hamming artificial neural network, and its use as a versatile signal/image processing circuit is presented. The circuit operation relies oil the charge-based processing of sum-of-products terms, complemented with digital p ...

2008

Adjusted complex position of extra sources in the image sources method

Thomas Guignard, Vincent Martin

Using a series development of the integral solution, a formal backing of the presence of image sources in geometrical acoustics methods has been shown. Furthermore, the existence of "invisible" sources is suggested, especially in the vicinity of obtuse ang ...

2006

A New Family of Complex Rotation-Covariant Multiresolution Bases in 2D

Michaël Unser, Thierry Blu

We present complex rotation-covariant multiresolution families aimed for image analysis. Since they are complex-valued functions, they provide the important phase information, which is missing in the discrete wavelet transform with real wavelets. Our basis ...

SPIE2003

From Polarizability to Effective Permittivity of Time-Varying Materials

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Optimization of an acoustic leaky-wave antenna based on acoustic metamaterial

Enhanced second-harmonic generation from double resonant plasmonic antennae

A MATLAB-based tool for visualizing the plane wave propagation in multilayer structures containing metamaterials

A bottom-up approach to fabricate optical metamaterials by self-assembled metallic nanoparticles

Epigenetic regulation of gene expression in physiological and pathological brain processes

Digital Reverse Propagation in Focusing Kerr Media

Shift-Invariant Spaces from Rotation-Covariant Functions

CMOS realization of two-dimensional mixed analog-digital Hamming distance discriminator circuits for real-time imaging applications

Adjusted complex position of extra sources in the image sources method

A New Family of Complex Rotation-Covariant Multiresolution Bases in 2D

Optimization of an acoustic leaky-wave antenna based on acoustic metamaterial

Enhanced second-harmonic generation from double resonant plasmonic antennae

Epigenetic regulation of gene expression in physiological and pathological brain processes

A bottom-up approach to fabricate optical metamaterials by self-assembled metallic nanoparticles

CMOS realization of two-dimensional mixed analog-digital Hamming distance discriminator circuits for real-time imaging applications

Digital Reverse Propagation in Focusing Kerr Media

Adjusted complex position of extra sources in the image sources method

A New Family of Complex Rotation-Covariant Multiresolution Bases in 2D

A MATLAB-based tool for visualizing the plane wave propagation in multilayer structures containing metamaterials

Shift-Invariant Spaces from Rotation-Covariant Functions