Concept

Polyéthylène basse densité linéaire

Publications associées (121)

Lead free piezoelectric materials

Lead oxide based ferroelectrics, represented by lead zirconate titanate (Pb(Zr,Ti)O-3) or PZT) are the most widely used materials for piezoelectric actuators, sensors and transducers due to their excellent piezoelectric properties. Considering lead toxicit ...

2004

Determination of the exciton formation in quantum wells from time-resolved interband luminescence

Benoît Marie Joseph Deveaud, Jean Berney, François Morier-Genoud, Marcia Portella Oberli, Lars Kappei

We present the results of a detailed time-resolved luminescence study carried out on a very high quality InGaAs quantum well sample where the contributions at the energy of the exciton and at the band edge can be clearly separated. We perform this experime ...

American Physical Society2004

Rheological Properties of Hyperbranched Polymer/Poly(ethylene Terephthalate) Reactive Blends

Yves Leterrier

The rheological properties in solution, in shear and in uniaxial elongation of poly(ethylene terephthalate) (PET) reacted together with hyperbranched polymers (HBPs) were investigated. Two different PET grades, of low and high molecular weights, were compo ...

2003

Structural properties and recombination processes in hydrogenated polymorphous silicon

Raphaël Butté

When silicon thin films are deposited by plasma enhanced chemical vapor deposition in a plasma regime close to powder formation, a new type of material, consisting of an amorphous matrix in which silicon nanocrystallites are embedded is obtained. This mate ...

2003

Nuclear localization of mouse fibroblast growth factor 2 requires N-terminal and C-terminal sequences

Friedrich Beermann

In vertebrates, different isoforms of fibroblast growth factor 2 (FGF2) exist, which differ by their N-terminal extension. They show different localization and expression levels and exert distinct biological effects. Nevertheless, genetic inactivation of a ...

2003

Polymer microchips bonded by O2-plasma activation

Hubert Girault, Joël Stéphane Rossier, Nicolas Xanthopoulos

This paper presents a fabrication of polymer microchips with homogeneous material technique due to surface treatment by plasma before sealing. UV laser photoablation was used for fast prototyping of microstructures, and oxygen plasma was used as a surface ...

2002

Enthalpic, entropic, and square gradient contributions to the surface energetics of amine-cured epoxy systems

The evolution of surface tension during polymerization of three amine-cured epoxy systems was investigated. Due to the chemical reaction of the epoxy groups with primary and secondary amines, the energetic status of an epoxyamine system increased during p ...

2002

Connectivity in ad-hoc and hybrid networks

Martin Hasler

We consider a large-scale wireless network, but with a low density of nodes per unit area. Interferences are then less critical, contrary to connectivity. This paper studies the latter property for both a purely ad-hoc network and a hybrid network, where f ...

2002

Connectivity in ad-hoc and hybrid networks

Patrick Thiran, Martin Hasler, Olivier Dousse

2002

Carbon nanotubes and nanostructures grown from diamond-like carbon and polyethylene

We report a simple way to synthesize carbon nanotubes and nanostructures from the solid phase. Vacuum annealing of diamond-like carbon (DLC) films or polyethylene mixed with catalyst in argon atmosphere leads to the formation of nanotubes and nanostructure ...

2001

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