Concept

Observation

Publications associées (227)

An assessment of the ability of three-dimensional air quality models with current thermodynamic equilibrium models to predict aerosol NO3 -

The partitioning of total nitrate (TNO3) and total ammonium (TNH4) between gas and aerosol phases is studied with two thermodynamic equilibrium models, ISORROPIA and the aerosol inorganics model (AIM), and three data sets: high time r ...

Blackwell Publishing Ltd2005

Analyse quantitative des intensités diffractées en microscopie électronique à transmission

The fabrication of nanostructures using III-V semiconductors results in materials with different physical properties than the bulk materials. Their optical and electronic properties are tailored and developed on a large scale for the fabrication of optical ...

EPFL2005

Edge and divertor physics with reversed toroidal field in JET

Richard Pitts

Asymmetries are a ubiquitous feature of the scrape-off layer (SOL) and divertor plasmas in any tokamak and are thought to be driven primarily by a variety of drift flows, the directions of which reverse with reversal of the main toroidal field. The underst ...

2005

Photoemission as a probe of coexisting and conflicting periodicities in low-dimensional solids

Marco Grioni, Christian Reinhard Ast, Helmuth Berger, Daniela Pacilè, Luca Perfetti

When two different periodic potentials are present at the same time in a solid, the electron wavefunctions must conform to the resulting overall periodicity. It is the case of the broken-symmetry phases which are often observed in low-dimensional systems. ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2005

Physical principles and miniaturization of Spark Assisted Chemical Engraving (SACE)

Hannes Bleuler, Rolf Wüthrich, Ashwin Lal

Spark assisted chemical engraving (SACE) is an unconventional micromachining technology based on electrochemical discharge phenomena for glass and various ceramics. The limits of SACE with respect to small dimensions in the particular case of glass are exp ...

2005

Search for CP violation in charged-Ξ and Λ hyperon decays

Yixing Chen, Yu Fu

The novel sources of CP violation observed in charged χ and λ hyperon decays were investigated. A comparison of the p and p̄ angular distributions in the hyperon decays was made using a subset of the data from the HyperCP experiment (E871) at Fermilab. A p ...

2004

Environmental Modeling with Fingerprint Sequences for Topological Global Localization

Roland Siegwart, Nicola Tomatis, Adriana Tapus, Pierre Lamon

In this paper a perception approach allowing for high distinctiveness is presented. The method works in accordance to the fingerprint concept. Such representation allows using a very flexible matching approach based on the minimum energy algorithm. The who ...

2003

Surface diffusion - Shifting strings

Harald Brune

Many atomic diffusion processes occur at rates that are too fast to observe experimentally. Using video scanning tunnelling microscopy, researchers are now able to observe the individual steps involved in correlated transport of atomic strings on metal sur ...

2003

Experimental test of damping models for n=1 toroidal Alfven eigenmodes in JET

Olivier Sauter, Ambrogio Fasoli, Duccio Testa

The damping rate of the n = 1 toroidal Alfven eigenmodes (TAE) mode in Ohmic-heated JET plasmas has been measured and compared with the prediction of the kinetic NOVA-K code, which includes electron and ion Landau damping of the global shear-Alfven wave fi ...

2003

Attachment-induced ionization instability in electronegative capacitive RF discharges

Christoph Hollenstein, Antoine Descoeudres, Laurent Fabien Hubert Sansonnens

Attachment-induced ionization instability has been experimentally observed in O-2 and CF4 capacitive RF discharges using time-resolved voltage probe, Langmuir probe, optical emission and mass spectrometry measurements. This instability occurs under specifi ...

2003

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