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 investigate the role of carrier mobility in holographic recording in LiNbO3 crystals. Both normal holographic recording (single wavelength, single trap) and two-center recording are considered, and the differences between the performances of the two met ...
There has been a recent trend towards the miniaturization of analytical tools, but what are the advantages of microfluidic devices and when is their use appropriate? Recent advances in the field of micro-analytical systems can be classified according to in ...
Previous studies of cyanide exchange on square planar tetracyanoplatinate complex [Pt(CN)4]2- have been undertaken only at a high pH. For a more complete fundamental understanding of this system we extended the investigations of these exchanges over a larg ...
Within the last 2 years our consortium has developed, built and tested an atomic force microscope for planetary science applications, in particular for the study of Martian dust and soil. An array of eight cantilevers and tips provides redundancy in case o ...
Estimates of vertical diffusivity inferred from microstructure measurements in the 2 thermocline of the open ocean (approximately 0.1 cm(2) s(-1)) are typically an order of magnitude smaller than values obtained with basin-wide tracer balances (approximate ...
Band offsets of 0.35-0.45 eV are produced at Ge homojunctions by placing a monolayer of As and an adjacent monolayer of Ga between the two Ge bulks. The "Ga-first" and "As-first" growth sequences exhibit band offsets of similar magnitude but opposite sign, ...
A new instrument for measuring cloud condensation nuclei (CCN) on board small aircraft is described. Small aircraft are attractive mainly because they are less costly, but they require instruments that are designed for minimum weight, volume, and power con ...
Obtaining the listening rates of radio stations in a function of time is an important instrument for determining the impact of publicity. In order to significantly improve the determination of radio listening rates, special watches have been developed whic ...
An important parameter for the overall quality of SLS parts is the density of powder layers before sintering. Previous studies have shown that the control of powder particle shape and size distribution can increase the density of non-packed powder beds. Ho ...
University Texas Austin, Mechanical Engineering Dept, Austin, Tx 00000 Usa1999
The comment by Starnberg, Brauer, and Nilsson qualitatively identifies the final-state lifetime as the cause of the ''anomalous'' photoemission broadening, but it neglects the linear energy dependence of the final-state broadening whose effect is of the sa ...