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.
We have generalized the principle of resonant X-ray beam coupling to waveguides containing multiple guiding layers and characterized their X-ray optical properties. In such a device, several coherent beams of a width on the order of 10-100 nm can be extrac ...
The structure of Liquid GeSe2 at T = 1373 K has been investigated by first-principles molecular dynamics. The calculated total neutron structure factor is in good agreement with recent experimental data. We found that the disappearance with increasing temp ...
In the attempt to identify the physical origin of a first sharp diffraction peak (FSDP) in the concentration-concentration partial structure factor, we perform first-principle molecular dynamics of liquid GeSe2. We compare the structural properties of two ...
The new possibilities offered by the Java programming environment combined with the accessibility of the World Wide Web present new and interesting perspectives. It is thus now possible to perform simulations directly, using a Web browser, independently of ...
The trigonal structure of a new member of the eudialyte group was established from X-ray single-crystal diffraction, lambda(MoKalpha) = 0.71073 Angstrom; space group R3m; a = 14.153(9) Angstrom, c = 60.72(5) Angstrom, V = 10546.1 Angstrom(3); M = 3050; D-x ...
The high- and low-temperature forms, i.e., phase I (stable above 328 K) and phase II (stable below 328 K), of Cu8GeSe6 have been investigated by the powder X-ray diffraction method. Cu8GeSe6 II is hexagonal with A = 12.6438(2), C = 11.7570(1) Angstrom, Z = ...
The determination of the crystal structure of the bacterial protein proaerolysin provided the first view of a pore-forming toxin constructed mainly from beta-sheet. The structure that was obtained and subsequent crystallographic and biochemical studies hav ...
Norbornene and norbornadiene insert across the exo-face of their C=C bond into the Pd-acyl bond of [(OC)(3)Fe{mu-Si(OMe)(2)(OMe)}(mu-dppm)Pd{C(=O)Me}] and (1a) (dppm = Ph2PCH2PPh2) to afford the heterodinuclear complexes [(OC)(3){(MeO)(3)Si}Fe(mu-dppm)Pd{C ...
The structures of the KNb4O5F (I) (synthesized for the first time) and the NbO2 (II) phases formed together with NbO during decomposition of reduced oxofluoroniobate K2-xNb4O3(O,F)(3)F (III) in the (NaCl + KCl) melt are studied by X-ray methods. The tetrag ...
Single crystals of GaInTe2 were grown from a melt and characterized by various experimental techniques, such as x-ray diffraction, x-ray photoelectron spectroscopy (XPS), and electrical and photoluminescence (PL) measurements. Our investigation evaluated i ...
