Concept

Polariseur

Publications associées (356)

Car-Parrinello molecular dynamics in a finite homogeneous electric field

We introduce a variational total-energy functional to treat finite homogeneous electric fields with periodic boundary conditions and show that this functional can be implemented within a Car-Parrinello molecular dynamics scheme. The Coupling to an electric ...

2003

Dimensionally Stable Anode-Type Anode Based on Conductive p-Silicon Substrate

Christos Comninellis, György Foti, Lassine Ouattara, Ilaria Duo, Marco Panizza

In the search for a good dimensionally stable anode-type electrode, p-silicon (1-3 mW cm) has been chosen as the substrate material due to its high anodic stability and its reasonable cost compared to titanium and tantalum. Several p-Si/IrO2 electrodes hav ...

2003

Mechanical stress effect on imprint behavior of integrated ferroelectric capacitors

Alexander Tagantsev

Stress-induced changes in the imprint and switching behavior of (111)-oriented Pb(Zr,Ti)O-3 (PZT)-based capacitors have been studied using piezoresponse force microscopy. Visualization of polarization distribution and d(33)-loop measurements in individual ...

2003

Photorefractive recording in LiNbO3 : Mn

Demetri Psaltis

The dynamic range, sensitivity, and dark decay of holographic recording of wavelength 458 nm in LiNbO3 crystals doped with 0.2-at. % Mn with different oxidation states have been measured. The measured sensitivity is 0.5 cm/J and is found to be independent ...

2002

Electromagnetic field interaction with vehicle cable harness: an experimental analysis

Davide Pavanello, Abraham Rubinstein

The paper presents experimental results obtained as part of the GEMCAR European project using the VERIFY EMP simulator belonging to the Swiss Defense Procurement Agency (Spiez). VERIFY generates a vertically polarized electric field with a rise time of 0.9 ...

2002

Polarization imaging by use of digital holography

Christian Depeursinge, Tristan Colomb, Etienne Cuche, Pierre Marquet

We present what we believe to be a new digital holographic imaging method that is able to determine simultaneously the distributions of intensity, phase, and polarization state at the surface of a specimen on the basis of a single image acquisition. Two re ...

2002

Quasi-isotropic single-transition cross-polarization in nuclear magnetic resonance

Geoffrey Bodenhausen, Fabien Ferrage

The theory of single-transition cross-polarization in NMR is presented and verified by exptl. evidence. In comparison to conventional cross-polarization a qual. change in the mechanism is obsd. Under the influence of matched radiofrequency fields with ampl ...

2002

A library for computing the filtered and non-filtered 3D Green's tensor associated with infinite homogeneous space and surfaces

Olivier Martin

We describe a library to compute various types of Green's tensor for three-dimensional electromagnetic scattering calculations. This library includes the retarded and non-retarded (quasi-static) Green's tensors for infinite homogeneous space and the non-re ...

Elsevier2002

An ultradense polymorph of rutile with seven-coordinated titanium from the Ries crater

Philippe Gillet

We report the discovery of an ultradense post-rutile polymorph of titanium dioxide in shocked gneisses of the Ries crater in Germany. The microscopic diagnostic feature is intense blue internal reflections in crossed polarizers in reflected light. X-ray di ...

2001

Fabrication of GaN photonic crystals for 400 nm wavelength

Nicolas Grandjean, Yixing Chen

We report on results of the fabrication and the micro-reflectance measurement of GaN photonic crystals. The etching performance of GaN has been studied with a conventional reactive ion etching system and SiCl4 plasma. We obtained an etch rate of 100 nm/min ...

2001

Graph Chatbot

Chattez avec Graph Search

Posez n’importe quelle question sur les cours, conférences, exercices, recherches, actualités, etc. de l’EPFL ou essayez les exemples de questions ci-dessous.

AVERTISSEMENT : Le chatbot Graph n'est pas programmé pour fournir des réponses explicites ou catégoriques à vos questions. Il transforme plutôt vos questions en demandes API qui sont distribuées aux différents services informatiques officiellement administrés par l'EPFL. Son but est uniquement de collecter et de recommander des références pertinentes à des contenus que vous pouvez explorer pour vous aider à répondre à vos questions.

Connectez-vous pour utiliser Chat avec Graph Search