Concept

Procédé sol-gel

Publications associées (342)

Processing optimization of solution derived PbZr1-xTixO3 thin films for piezoelectric applications

Nava Setter, Paul Muralt, Stéphane Hiboux, Andreas Seifert, Nicolas Ledermann

Processing optimization allowed the sol-gel fabrication of 1 mum thick, phase pure perovskite thin films with identical grain size and controlled texture. This made it possible to fabricate stress compensated beams to measure the transverse piezoelectric c ...

2001

Quantitative analysis of the bit size dependence on the pulse width and pulse voltage in ferroelectric memory devices using atomic force microscopy

Nava Setter

The Bit formation using atomic force microscopy (AFM) was studied on 270-nm-thick < 111 > preferentially oriented Pb(Zr0.4Ti0.6)O-3 (PZT) films prepared by the sol-gel process. To minimize the cantilever-sample capacitive farce interaction, the experiment ...

2001

Mode-coupling theory of colloids with short-range attractions

Giuseppe Foffi, Francesco Sciortino

Within the framework of the mode-coupling theory of super-cooled liquids, we investigate new phenomena in colloidal systems on approach to their glass transitions. When the inter-particle potential contains an attractive part, besides the usual repulsive h ...

2001

A model for the consolidation of warp-knitted reinforced laminates

Véronique Michaud, Pierre-Etienne Bourban

A model for the consolidation of thermoplastic composites reinforced with a warpknitted fabric was developed. The evolution of void content during composite consolidation achieved via film stacking was related to the processing parameters and the material ...

2001

Universal Aging Features in the Restructuring of Fractal Colloidal Gels

Suliana Manley

We use multispeckle dynamic light scattering to measure the dynamic structure factor, f (q, τ), of gels formed by aggregation of colloids. Although the gel is an elastic solid, f (q, τ) nearly completely decays on long time scales, with an unusual form, f ...

2000

Nanocrystalline Ti-oxide-based solar cells made by sputter deposition and dye sensitization: Efficiency versus film thickness

Ulf Anders Hagfeldt, Monica Marcela Gomez Leon

Nanocryst. TiO2-based films with a special penniform microstructure were prepd. by reactive d.c. magnetron sputtering followed by dye sensitization. The films were integrated in a solar cell configuration and were able to yield a higher photocurrent than s ...

2000

Phase behavior, rheology and erosion behavior of hydrogels of fluorocarbon end-capped PEG

Jeffrey Alan Hubbell

Characteristics of hydrogels formed by assocn. of hydrophobically-modified polyethylene glycol (PEG) with fluoroalkyl (Rf) end-groups can be controlled by modulating their mol. structures. Polymers with relatively long PEG chains (e.g., 20 kg/mol PEG with ...

2000

Stoichiometry and interdiffusion in PZT thin films studied by transmission electron microscopy

Nava Setter, Paul Muralt, Thomas Maeder, Stéphane Hiboux, Zian Kighelman

Electrode stability, interdiffusion, phase purity and deviation from stoichiometry at the PZT-electrode interface are key issues in PZT thin film integration. This article highlights the use of transmission electron imaging combined with energy dispersive ...

Materials Research Society / MRS1999

Preparation of simulated inert matrix fuel with different powders by dry milling method

Manuel Alexandre Pouchon

Simulated zirconium oxide-based inert matrix fuel (IMF) has been prepared using cerium oxide replacing plutonium oxide, following the conventional pelletising route, in which an improved two-stage attrition mill was employed. Different methods have been ap ...

Elsevier1999

Gas spectrometry based on a pyroelectric thin film array

Nava Setter, Paul Muralt

We present a far infrared gas spectrometer which uses a thin film pyroelectric detector integrated on silicon. The detector is in-house fabricated and consists of 1 x 50 elements of sol-gel deposited, zirconium rich lead titanate (PZT) which are suspended ...

1999

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