La Real Armada y el mundo hispánico en el siglo XVIII

La coordinación de este libro estuvo a cargo de Agustín Guimerá Ravina y Olivier ChalinePeer reviewe

Programmation logique (non-commutativité et polarisation)

PARIS13-BU Sciences (930792102) / SudocSudocFranceF

Low loss poly-silicon for high performance capacitive silicon modulators

International audienceOptical properties of poly-silicon material are investigated to be integrated in new silicon photonics devices, such as capacitive modulators. Test structure fabrication is done on 300 mm wafer using LPCVD deposition: 300 nm thick amorphous silicon layers are deposited on thermal oxide, followed by solid phase crystallization anneal. Rib waveguides are fabricated and optical propagation losses measured at 1.31 µm. Physical analysis (TEM ASTAR, AFM and SIMS) are used to assess the origin of losses. Optimal deposition and annealing conditions have been defined, resulting in 400 nm-wide rib waveguides with only 9.2-10 dB/cm losses

SiGe-enhanced Si capacitive modulator integration in a 300 mm silicon photonics platform for low power consumption

International audienceThe successful integration of capacitive phase shifters featuring a p-type strained SiGe layer in a 300 mm silicon photonics platform is presented. The phase shift is evaluated with a voltage swing of only 0.9 V pp , compatible with CMOS technology. A good correlation is shown between the phase shift efficiency from 10 to 60°/mm and the capacitive oxide thickness varying from 15 to 4 nm. Corresponding insertion losses are as low as 3 dB/mm thanks to the development of low loss poly-silicon and to a careful design of the doped layers within the waveguide. The thin SiGe layer brings an additional 20% gain in efficiency due to higher hole efficiency in strained SiGe

La fabrique interdisciplinaire

Les textes rassemblés dans cet ouvrage regroupent un ensemble de contributions qui présentent une démarche et non une thématique commune : la pratique de l'interdisciplinarité. Les auteurs sont presque tous de jeunes chercheurs en histoire, en sociologie et en science politique. Chacun de ces textes est fondé sur des recherches empiriques préalables, mais réfléchit de manière centrale à ce que penser « avec » et « dans » sa discipline veut dire. Avec quels emprunts, quels outils, quelles méthodes peut-on penser avec et contre des disciplines proches, pour quels profits et quels malentendus productifs. Fabriquer l'interdisciplinarité signifie ici cultiver le goût de l'indiscipline et le goût de la curiosité

The ILD detector at the ILC

The International Large Detector, ILD, is a detector concept which has been developed for the electron-positron collider ILC. The detector has been optimized for precision physics in a range of energies between 90 GeV and 1 TeV. ILD features a high precision, large volume combined silicon and gaseous tracking system, together with a high granularity calorimeter, all inside a 3.5 T solenoidal magnetic field. The paradigm of particle flow has been the guiding principle of the design of ILD. In this document the required performance of the detector, the proposed implementation and the readiness of the different technologies needed for the implementation are discussed. This is done in the framework of the ILC collider proposal, now under consideration in Japan, and includes site specific aspects needed to build and operate the detector at the proposed ILC site in Japan