Concept

Particle size

Related publications (116)

Diffusivity and configurational entropy maxima in short range attractive colloids

We study tagged particle diffusion at large packing fractions, for a model of particles interacting with a generalized Lennard-Jones 2n-n potential, with large n. The resulting short range potential mimics interactions in colloidal systems. In agreement wi ...

2005

Manganese doped ZnS nanoparticles

Yvonne Axmann

Nanostructured materials can be defined as those materials whose structural elements - clusters, crystallites or molecules - have dimensions in the 1-100 nm range. The explosion in both academic and industrial interest over the past 20 years arises from th ...

EPFL2004

Electrochemical and optical properties of two dimensional electrostatic assembly of Au nanocrystals

Jean-Pierre Abid, Michel Carrara

The spectroscopic and electrochemical properties of two-dimensional electrostatic assembly of Au nanocrystals are examined on poly-L-lysine (pLys) modified gold electrodes. The surface preparation for the nanoparticle deposition involved the self-assembly ...

2004

Precipitation and transformation of nanostructured copper oxalate and copper/cobalt composite precursor synthesis

Lucica Soare

The aim of this thesis was to synthesise and control a nanostructured composite of copper/cobalt. Both the copper and cobalt oxalate exhibit a nanostructure. Attempts to produce nanocomposite particles in the size range of 10-70 nm were made via an oxalate ...

EPFL2004

Ideal glass in attractive systems with different potentials

Giuseppe Foffi, Francesco Sciortino

We discuss the ideal glass transition for two types of potential model of attractive colloidal systems, i.e. the square-well system and the Yukawa hard-sphere fluid. We use the framework of the ideal mode-coupling theory and we mostly focus our attention o ...

2002

Size-effect in mesoscopic epitaxial ferroelectric structures: Increase of piezoelectric response with decreasing feature-size

Paul Muralt, Benjamin Dwir, Simon Bühlmann

Epitaxial 50 nm and 200 nm thick films of Pb(Zr0.40Ti0.60)O-3 (PZT) have been deposited by reactive rf magnetron sputtering on conductive Nb-doped SrTiO3(100) (STO). The patterning process involved electron beam lithography of polymethylmethacrylate (PMMA) ...

2002

The morphology of hyperbranched polymer compatibilized polypropylene/polyamide 6 blends

The influence of hyperbranched polymer grafted polypropylene (PP-HBP) on the morphology of polypropylene (PP)/polyamide 6 (PA6) blends has been investigated. The final morphology was strongly influenced by the PP-HBP compatibilizer concentration. At low co ...

2001

Size effect in X-ray and electron diffraction patterns from hydroxyapatite particles

Philippe Buffat, Elena Suvorova Buffat

High-resolution transmission electron microscopy (HRTEM), electron microdiffraction, and X-ray diffraction were used to study hydroxyapatite specimens with particle sizes from a few nanometers to several hundreds of nanometers. Diffuse scattering (without ...

2001

Fracture toughness determination of high volume fraction particle reinforced aluminium matrix composites

Andreas Mortensen, Ludger Weber, Andreas Rossoll

The influence of particle size and particle type on the fracture toughness of aluminium matrix composites is investigated using model composites of 99.99% purity aluminium reinforced with particles of alumina and boron carbide. These composites are produce ...

2000

Kinetic Arrest Originating in Competition Between Attractive Interaction and Packing Force

Giuseppe Foffi, Francesco Sciortino

We discuss the situation where attractive and repulsive portions of the interparticle potential both contribute significantly to glass formation. We introduce the square-well potential as prototypical model for this situation, and reject the Baxter model a ...

2000

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