FR – Page 20 – TechConnect Briefs

Organic versus Hybrid Coacervate Complexes: Co-Assembly and Adsorption Properties

Fresnais J., Berret J.-F., Qi L., Chapel J.-P., Castaing J.-C., Laboratoire Matière et Systèmes Complexes, FR

We report the co-assembly and adsorption properties of coacervate complexes made from polyelectrolyte-neutral block copolymers and oppositely charged nanocolloids.

Raman study and DFT calculations of amino acids

Sonois V., Estève A., Zwick A., Faller P., Bacsa W., CEMES CNRS Univ Toulouse, FR

Previously we reported intense and narrow vibrational Raman bands of the amino acid histidine grown from droplets of aqueous histidine on silica (Sonois et al., 2007, Chem. Phys. Lett., 439, 360-363). In the present communication [...]

Dispersion and incorporation of optical nanotracers

Samuel J., Raccurt O., Poncelet O., Tillement O., Tardif F., Commissariat à l’Energie Atomique, FR

Silica fluorescent nanoparticles of 40nm diameter are synthesized by a reverse microemulsion process. Numerous industrial applications involve the homogeneous incorporation of nanoparticles into a polymer matrix. Nevertheless, because of their low size, nanoparticles tend to [...]

Chemical doping by sulfuric acid in double wall carbon nanotubes

Puech P., Ghandour A., Sapelkin A., Flahaut E., Dunstan D., Bacsa W., CEMES CNRS Univ Toulouse, FR

Charge transfer due to chemical doping in carbon nanotubes [1] can be detected through changes in the band shape and spectral shifts of the Raman G-band. In double wall carbon nanotubes, the inner tube is [...]

Linear scaling techniques for first-principle calculations of large nanowire devices

Zhang D., Polizzi E., University of Massachusetts, FR

This paper aims to provide a sound basis to face the challenges in large scale atomistic simulations for applications ranging from material sciences and chemistry to nanoelectronics and bio-nanotechnology. In nanoelectronics, large scale ’ab-initio’ simulations [...]

Composite Carbon Nanostructures as Promising Carriers for Gaz Analysis

Majoli L., Evstratov A., Guillot J.-M., Rouvière A., Baussand P., Ales High Mining School, FR

In the framework of the project ACI NPD-37 “NSC-Env” supported by the French Ministry of Research and New Technologies, a kind of nanostructured carbon based composite materials was developed in order to propose new efficient [...]

Ultra-short pulsed laser for nano-texturation associated to plasma immersion implantation for 3D shallow doping : Application to silicon photovoltaic

Halbwax M., Sarnet T., Delaporte Ph., Sentis M., Etienne H., Torregrosa F., Vervisch V., Martinuzzi S., LP3 UMR CNRS 6182, FR

It has been shown in a recent past (Mazur et al) that a simple way to improve the silicon-based solar cells low efficiency (around 20%) is to irradiate the silicon surface with a series of [...]

Nanostructuration of sol-gel thin films

Peroz C., Goletto V., Foresti M., Heitz C., Le Gratiet L., Barthel E., Sondergard E., Laboratoire mixte CNRS/Saint-Gobain, FR

Sol-gel chemistry is very versatile and structuring sol-gel materials will allow a fine tuning of chemistry, electromagnetic, optical and mechanical properties. We explore the possibilities to combine sol-gel chemistry to large scale patterning at low [...]

Femtosecond laser micromachining of IC for semiconductor defect analysis

Halbwax M., Sarnet T., Hermann J., Delaporte Ph., Sentis M., Fares L., Haller G., LP3 UMR CNRS 6182, FR

The detection and analysis of defects in Integrated Circuits (IC) are major challenges faced by the semiconductor industry as outlined by the roadmap in the latest International Technology Roadmap for Semiconductors (ITRS). Advanced tools used [...]

Mono-component Silicone based Conformal Coating

Francès J.-M., Hantin V., Schneider S., RHODIA SILICONES, FR

We will present a UV resin designed to protect printed circuit board. The UV resin is cured by cationic polymerisation and present high performances with advantages such as low viscosity, no need of inertisation during [...]