Concept

Rayon cathodique

Publications associées (127)

Effect of particle size on LiMnPO4 cathodes

LiMnPO4 was synthesized using a sol–gel method and tested as a cathode material for lithium ion batteries. After calcination at temperatures between 520 and 600 ◦C, primary particle sizes in the range of 140–220 nm were achieved. Subsequent dry ball millin ...

2007

Molecular Wiring of Insulators: Charging and Discharging Electrode Materials for High-Energy Lithium-Ion Batteries by Molecular Charge Transport Layers

Shaik Mohammed Zakeeruddin, Nicholas Evans

Self-assembled monolayers (SAMs) of redox-active molecules on mesoscopic substrates exhibit two-dimensional conductivity if their surface coverage exceeds the percolation threshold. Here, we show for the first time that such molecular charge transport laye ...

2007

Picosecond time resolved cathodoluminescence to study semiconductor materials and heterostructures

Samuel Sonderegger

A large number of characterization tools for semiconductor based heterostructures are available nowadays. Most of these techniques deliver high temporal resolution (down to hundreds of femtoseconds) or good spatial resolution (down to sub nanometer resolut ...

EPFL2007

Non-adiabatic passing electron response and outward impurity convection in gyrokinetic calculations of impurity transport in ASDEX upgrade plasmas

Emiliano Fable

Gyrokinetic calculations with the GS2 code of impurity transport in ASDEX Upgrade H-mode plasmas are presented. A method to separate the diagonal and off-diagonal terms in the quasi-linear flux computed by the gyrokinetic code for a trace impurity is intro ...

2007

Theoretical treatment and computer simulation of microelectrode arrays

Nico de Rooij

New relations for and interrelations between the current responses of different microelectrode arrays are presented. Interdigitated microelectrode arrays (IDAs: alternating cathodes and anodes) and uniform microband electrode arrays (MEAs: only cathodes or ...

2006

X-ray beam-position monitoring in the sub-micrometre and sub-second regime

Christian David, Marco Stampanoni

It is demonstrated that X-ray beam positions can be extracted from two-dimensional profiles with sub-pixel resolution. Beam-position measurements utilizing a self-designed low-cost two-dimensional detector have been performed at two synchrotron radiation b ...

2005

Beam-induced etching of material on substrate involves directing gaseous compound which reacts in the presence of beam to etch the excess material which not etching the substrate

Patrik Willi Hoffmann, Tristan Bret, Xavier Multone

A method and apparatus for local beam processing using a beam activated gas to etch material are described. Compounds are disclosed that are suitable for beam-induced etching. The invention is particularly suitable for electron beam induced etching of chro ...

FEI CO (FEIF-Non-standard)2005

Diffusion-engineered quasiparticle multiplication for STJ single photon detectors

Andreea Veronica Savu

We have designed a diffusion-engineered, singlephoton spectrometer in the optical-UV range using a superconducting tunnel junction. The optical photon is absorbed in a Ta film and creates excess quasiparticles. These trap into an Al tunnel junction. Intern ...

2005

Electron capture dissociation fourier transform ion cyclotron resonance mass spectrometry in the electron energy range 0-50 eV

Yury Tsybin

Electron capture dissocn. (ECD) of polypeptide cations was obtained with pencil and hollow electron beams for both sidekick and gas-assisted dynamic ion trapping (GADT) using Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) with an el ...

2004

Electrochemical Behavior of Fluorinated Boron-Doped Diamond

Christos Comninellis, Lassine Ouattara, Guillaume Siné, Marco Panizza

The surface properties and the electrochem. behavior of a fluorinated B-doped diamond (F-BDD) electrode prepd. by plasma treatment in CF4-He mixt. was studied by XPS and cyclic voltammetry in acidic media. The results showed C-F bonding (C-CF and C-F) on t ...

2003

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