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Publications associées (520)

Efficient Energies and Algorithms for Parametric Snakes

Michaël Unser, Thierry Blu, Mathews Jacob

Parametric active contour models are one of the preferred approaches for image segmentation because of their computational efficiency and simplicity. However, they have a few drawbacks which limit their performance. In this paper, we identify some of these ...

IEEE2004

A Variational Definition of Electrostatic Potential Derived Charges

Ursula Röthlisberger

In a recent work [Laio, A., VandeVondele, J., Rothlisberger, U. J. Phys. Chem. B 2002 106, 7300] a novel method has been proposed to define dynamical electrostatic potential derived (D-RESP) charges for systems described within a quantum mechanics/mol. mec ...

2004

Theoretical and experimental study of the IR spectrum of the BrHI and BrDI anions

Andreas Osterwalder

A new potential energy surface and dipole moment surface were constructed for BrHI- by a 3-D spline interpolation of ab initio data at the MRCI/aVQZ level of theory and basis set, with ECP's for the halogens. "Exact"vibrational calcns. were performed on th ...

2004

Measurement of triple-gauge-boson couplings of the W boson at LEP

Qian Wang, Aurelio Bay, Horst Vogel, Eduardo Sanchez, Zhirui Xu, Werner Lustermann, Liang Sun, Jian Zhao, Anu Wadhwa, Ji Hyun Kim, Zheng Wang, Matthias Weber, Xiao Wang

The CP-conserving triple-gauge-boson couplings, g(1)(Z), kappa(gamma), lambda(gamma), g(5)(Z), kappa(Z) and lambda(Z) are measured using hadronic and semi-leptonic W-pair events selected in 629 pb(-1) of data collected at LEP with the L3 detector at centre ...

Elsevier2004

Methods and apparatus for patterning a surface

Jeffrey Alan Hubbell

The present invention provides methods and apparatus for locally patterning surfaces. In one such method, an oxidizable thioether is adsorbed onto a conductive surface 10. The surface is then contacted with a fluid medium M. A conducting stamp 12 is then b ...

2003

QM/MM Car-Parrinello molecular dynamics study of the solvent effects on the ground state and on the first excited singlet state of acetone in water

Ursula Röthlisberger

The authors present a hybrid Car-Parrinello quantum mech./mol. mech. (QM/MM) approach that is capable of treating the dynamics of mol. systems in electronically excited states in complex environments. The potential energy surface in the excited state is de ...

2003

Solution versus vapor growth of dipolar layers on activated oxide substrates

Frank Nüesch, Libero Zuppiroli, Michel Carrara

Monolayer adsorption of benzoic acid derivatives on activated oxide surfaces from solution and from the vapor phase are investigated with the view of modifying the work function of a conductive substrate. Para-substituted benzoic acids with a wide range of ...

American Chemical Society2003

Planar coil-based microsystem for the long-range transport of magnetic beads

Martinus Gijs, Amar Rida

We propose a new approach for magnetic microbead transport in microfluidic channels over long-range distances by the actuation of a simple array of planar coils. The latter are placed in a uniform static magnetic field, generated by permanent magnets. This ...

2003

Localization effects in GaN/AlGaN quantum well - Photoluminescence studies

Nicolas Grandjean

Exciton localization in GaN/AlGaN quantum well structures is studied by photoluminescence. An anomalous temperature behavior of the photoluminescence from the quantum well is observed. With increasing temperature the energy position of the excitonic emissi ...

2003

On the non-analytic behaviour of thermodynamic potentials at first order phase transitions

Sacha Friedli

This work is devoted to the study of the analyticity properties of thermodynamic potentials (free energy, pressure) for classical lattice systems at low temperature. The central topic of our analysis, in this framework, is to show rigorously the absence of ...

EPFL2003

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