Concept

Gravitational potential

Publications associées (149)

A multi-color fast-switching microfluidic droplet dye laser

We describe a multi-color microfluidic dye laser operating in whispering gallery mode based on a train of alternating droplets containing solutions of different dyes; this laser is capable of switching the wavelength of its emission between 580 nm and 680 ...

2009

Observations of CO in the eastern filaments of NGC 1275

Yves Revaz

We recently found extended CO(2-1) emission from cold molecular gas embedded in the network of Ha filaments surrounding the galaxy NGC 1275 (Salome et al. 2006). We now present CO(2-1) interferometer maps of the eastern filaments, at high spatial and spect ...

2008

Scaling of capillary, gravity and viscous forces affecting flow morphology in unsaturated porous media

Dani Or

Interplay between capillary, gravity and viscous forces in unsaturated porous media gives rise to a range of complex flow phenomena affecting morphology, stability and dynamics of wetting and drainage fronts. Similar average phase contents may result in si ...

2008

Stability of an organometallic ruthenium-ubiquitin adduct in the presence of glutathione: Relevance to antitumor activity

Paul Joseph Dyson, Yury Tsybin, Christian Hartinger, Angela Casini, Céline Rita Duhot

The interactions of the ruthenium(II) complex Ru(η6-p-cymene)(pta)Cl2 (RAPTA-C), an effective anticancer and antimetastatic agent, with biol. nucleophiles are important with respect to its mechanism of action, for example, the reaction with glutathione (GS ...

2008

Accumulation and transoformation of sulfonated aromatic compounds by higher plants - toward the phytotreatment of wastewater from dye and textile industries

Jean-Paul Schwitzguebel, Sylvie Aubert, Stéphanie Braillard

Sulfonated anthraquinones are precursors of many synthetic dyes and pigments, recalcitrant to biodegradation and thus not eliminated by classical wastewater treatments. In the development of a phytoremediation process to remove sulfonated aromatic compound ...

Springer-Verlag2008

Tunable Spin Gaps in a Quantum-Confined Geometry

Marco Grioni, Emmanouil Frantzeskakis

We have studied the interplay of a giant spin-orbit splitting and of quantum confinement in artificial Bi-Ag-Si trilayer structures. Angle-resolved photoelectron spectroscopy reveals the formation of a complex spin-dependent gap structure, which can be tun ...

American Physical Society2008

Computation of 2-D Current Distribution in Superconductors of Arbitrary Shapes Using a New Semi-Analytical Method

Frédéric Sirois, François Roy

This paper presents an original semi-analytical method (SAM) for computing the 2-D current distribution in conductors and superconductors of arbitrary shape, discretized in triangular elements. The method is a generalization of the one introduced by Brandt ...

2007

Light structuring for massively parallel optical trapping

Johann Rohner

Optical trapping, discovered in the 70's, allows moving and stabilizing small objects which sizes varies from atoms to particles of several microns. This technique, based on momentum conservation, is particularly well suited for manipulating biological mat ...

EPFL2007

Surface Deformation Models for Non-Rigid 3--D Shape Recovery

Pascal Fua, Mathieu Salzmann, Slobodan Ilic, Julien Pilet

3--D detection and shape recovery of a non-rigid surface from video sequences require deformation models to effectively take advantage of potentially noisy image data. Here we introduce an approach to creating such models for deformable 3--D surfaces. We e ...

2007

The Effective Rank: A Measure of Effective Dimensionality

Martin Vetterli, Olivier Roy

Many signal processing algorithms include numerical problems where the solution is obtained by adjusting the value of parameters such that a specific matrix exhibits rank deficiency. Since rank minimization is generally not practicable owing to its integer ...

2007

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