Concept

Vecteur d'onde

Publications associées (201)

Bloch surface waves-controlled emission of organic dyes grafted on a one-dimensional photonic crystal

Vincent Paeder, Valeria Musi, Francesco Michelotti

An alternative route to plasmon-controlled fluorescence for improving the detection of fluorescence is proposed. In place of a metallic layer, a suitable silicon-based one-dimensional photonic crystal is used to generate a Bloch surface waves-coupled emiss ...

American Institute of Physics2011

Theoretical Methods for Wave Propagation across Jointed Rock Masses

Jian Zhao, Jianbo Zhu

Different methods are presently available for the analysis of wave propagation across jointed rock masses with the consideration of multiple wave reflections between joints. These methods can be divided into two categories. One is based on the displacement ...

Springer Verlag2010

Continuum Vlasov Simulation in Four Phase-Space Dimensions

Stephan Brunner

In the VALHALLA project, we are developing scalable algorithms for the continuum solution of the Vlasov-Maxwell equations in two spatial and two velocity dimensions. We use fourth-order temporal and spatial discretizations of the conservative form of the e ...

2010

Bloch surface waves in ultrathin waveguides: near-field investigation of mode polarization and propagation

Olivier Martin, Hans Peter Herzig, Libo Yu, Tristan Sfez, Daniele Brunazzo, Francesco Michelotti

In this work, we use a multi-heterodyne scanning near-field optical microscope to investigate the polarization and propagation of Bloch surface waves in an ultrathin (similar to lambda/10) ridge waveguide. First, we show that the structure sustains three s ...

2010

Wave Propagation in Auxetic Tetrachiral Honeycombs

Alessandro Spadoni

This paper describes a numerical and experimental investigation on the flexural wave propagation properties of a novel class of negative Poisson's ratio honeycombs with tetrachiral topology. Tetrachiral honeycombs are structures defined by cylinders connec ...

American Society of Mechanical Engineers2010

Analytical study of S-wave propagation across saturated joints in rock masses

Gaofeng Zhao, Jianbo Zhu

Joints are important mechanical and hydrological features of rock masses, and they can greatly affect wave propagation and attenuation across jointed rock masses. Joints often contain liquid, and the presence of liquid will change the mechanical behaviors ...

Crc Press-Taylor & Francis Group, 6000 Broken Sound Parkway Nw, Ste 300, Boca Raton, Fl 33487-2742 Usa2010

Wave induced velocities inside a model seagrass bed

Laboratory measurements reveal the flow structure within and above a model seagrass meadow (dynamically similar to Zostera marina) forced by progressive waves. Despite being driven by purely oscillatory flow, a mean current in the direction of wave propaga ...

American Geophysical Union2010

An equivalent viscoelastic model for rock mass with parallel joints

Jian Zhao

An equivalent viscoelastic medium model is proposed for rock mass with parallel joints. A concept of "virtual wave source (VWS)'' is proposed to take into account the wave reflections between the joints. The equivalent model can be effectively applied to a ...

2010

Nonlinear thermoelasticity, vibration, and stress wave propagation analyses of thick FGM cylinders with temperature-dependent material properties

Mehran Khaghani

In the present paper, nonlinear thermoelasticity, vibration, and stress wave propagation analyses of thick-walled cylinders made of functionally graded materials with temperature-dependent properties are performed. In contrast to researches accomplished so ...

Elsevier2010

Guided Bloch Surface Waves on Ultrathin Polymeric Ridges

Olivier Martin, Hans Peter Herzig, Tristan Sfez, Daniele Brunazzo, Francesco Michelotti

We present a direct evidence of Bloch surface waves (BSWs) waveguiding on ultrathin polymeric ridges, supported by near-field measurements. It is demonstrated that near-infrared BSWs sustained by a silicon-based multilayer can be locally coupled and guided ...

2010

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