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Patent
Ecole Polytechnique and French National Center for Scientific Research | Date: 2010-01-06

The invention relates to a gas processing unit adapted for generating a surface plasma in the vicinity of a photocatalyst, that has a planar configuration. The photocatalyst is deposited in the form of a thin layer on a dielectric substrate and at least one plasma supply electrode is formed above the photocatalyst thin layer. Such a configuration increases the interaction between the plasma and the photocatalyst. The unit can be used for a gas processing of the pollution-control, odour reduction or bactericidal treatment type with a high efficiency.


A laser device includes an apparatus for producing amplified laser pulses, using a plurality of amplifying optical fibers, and groups the basic amplified pulses into an overall amplified pulse, as well as a target, onto which the overall amplified pulse is directed such as to generate a predetermined physical process thereon, which causes a change of state in the target. The laser device is configured to measure at least one distinctive parameter of the generated physical process; adjust at least one characteristic for adjusting the basic amplified laser pulses; and analyze a plurality of measurements for different adjustments. The device analyzes the measurements many times in loops for different laser pulse adjustment characteristics, enabling an optimization by a heuristic method. Also provided is a heuristic optimization method implemented by the laser device.


Patent
Ecole Polytechnique and French National Center for Scientific Research | Date: 2012-11-21

A process for manufacturing graphene film, comprising the controlled growth of graphene film, comprises the following steps: depositing at least one metal layer on the surface of a substrate; and continuously producing a carbon-rich buried region inside said metal layer by bombarding the metal layer with a flux of carbon atoms and/or carbon ions with an energy higher than about a few tens of electron volts so that they penetrate a portion of the metal layer, allowing said carbon-rich region to be created and maintained, so as to form, by diffusion, through said metal layer, a graphene film at the interface of said metal layer with said substrate.


Patent
French National Center for Scientific Research and Ecole Polytechnique | Date: 2010-01-06

The invention relates to a gas processing unit adapted for generating a surface plasma in the vicinity of a photocatalyst, that has a planar configuration. The photocatalyst is deposited in the form of a thin layer on a dielectric substrate and at least one plasma supply electrode is formed above the photocatalyst thin layer. Such a configuration increases the interaction between the plasma and the photocatalyst. The unit can be used for a gas processing of the pollution-control, odour reduction or bactericidal treatment type with a high efficiency.


Grant
Agency: Cordis | Branch: FP7 | Program: ERC-SyG | Phase: ERC-2012-SyG | Award Amount: 9.97M | Year: 2013

The overarching goal of the present proposal is to exploit materials design, coherent optical methods and multiple theoretical approaches to deterministically control ordered states of strongly correlated electron materials, also referred to as quantum or complex materials. The underlying ideas can be applied to vast number of problems in materials physics, but the stated goal is that of optimizing superconductivity at higher temperatures than achieved so far, possibly even at room temperature. The proposal starts from research strands that follow challenging but well-establish paths, such as the use of complex-oxide heterostructures and strain engineering at interfaces to modulate the electronic properties. In a second class of investigations, coherent optical control of lattice dynamics with strong field THz transients is proposed to anneal the competing order quenching superconductivity. This builds on our recent discovery of light-induced transient superconductivity in high temperature cuprates, a remarkable process not yet understood or optimized. We will use a combination of femtosecond optical and x-ray experiments with Free Electron Lasers, together with time dependent real-materials simulations. Perhaps the most ambitious goal will be to develop laser-cooling techniques to reduce quantum phase fluctuations between planes of cuprate superconductors. Finally, we propose to use static and dynamic techniques to engineer new phases of condensed matter, for example by engineering new materials with a single band crossing the Fermi level, to optimize superconductivity. A unique combination of complementary expertise, from materials design, to coherent and ultrafast optical and x-ray physics, with materials and quantum optics theory, will be key in making true progress in these areas.

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