Abstract: A method is provided for producing a visual hydrogen sensor and to a sensor produced in this manner, the sensor allowing the presence of hydrogen gas in a medium to be detected by the naked eye as a result of a change of color in the sensor. The method involves the deposition of thin porous layers of oxides that do not absorb visible light in their completely oxidized state which become colored when they are partially reduced. This deposition is carried out using vapor phase deposition (PVD) in a glancing angle configuration (GLAD). The method also involves the preparation of a solution of an active metal precursor capable of dissociating the hydrogen molecule and a carrier vector and the deposition of this solution on the oxide layer in order to incorporate a minimum quantity of active metal within the pores of the oxide layer in the form of nanoparticles.

Abstract: The document describes a sensor, apparatus and method for the direct analysis of fluids in order to determine concentration of solutes in solutions. Transductors with porous birefringent monolayer or multilayer structures (such as a planar photonic structure in the form of a Bragg microcavity) may be used as sensors. The method of the invention can be performed in two possible implementations; a first one, wherein the sensor is a photonic crystal in a microfluidic device which comprises two transparent windows, data being retrieved in transmission mode and a second one, wherein the photonic crystal sensor is located on the tip of an optical fiber, data being retrieved in reflection mode.

Abstract: A method is provided for producing a visual hydrogen sensor and to a sensor produced in this manner, the sensor allowing the presence of hydrogen gas in a medium to be detected by the naked eye as a result of a change of colour in the sensor. The method involves the deposition of thin porous layers of oxides that do not absorb visible light in their completely oxidised state which become coloured when they are partially reduced. This deposition is carried out using vapour phase deposition (PVD) in a glancing angle configuration (GLAD). The method also involves the preparation of a solution of an active metal precursor capable of dissociating the hydrogen molecule and a carrier vector and the deposition of this solution on the oxide layer in order to incorporate a minimum quantity of active metal within the pores of the oxide layer in the form of nanoparticles.

Abstract: The invention relates to membranes for guided bone regeneration, comprising a biodegradable polymer that has been treated with a plasma on one of the faces thereof, and on which at least one or more nanometric layers of active oxides has been deposited on one or both of the faces. The invention also relates to uses of and methods for producing said membranes and to implants based thereon.

Abstract: The present invention relates to the procedure for the preparation of barrier and/or dielectric layers on a substrate, characterized in that it comprises the following stages: (a) cleaning the substrate, (b) placing the substrate on a sample holder and the introduction thereof into a vacuum chamber, (c) dosage of said vacuum chamber with an inert gas and a reactive gas, (d) injection into the vacuum chamber of a volatile precursor that has at least one cation of the compound to be deposited, (e) activation of a radio frequency source and activation of at least one magnetron, (f) decomposition of the volatile precursor using plasma, the reaction between the cation of the volatile precursor and the reactive gas occurring at the same time that the reaction between the reactive gas contained in the plasma and the cation from the target by sputtering takes place, thus leading to the deposition of the film onto the substrate. The device for carrying out said method is also object of the invention.

Abstract: Polymer based lens including a hardening layer, an interferential multi-layer and an absorbent layer therebetween. The absorbent layer is made from a metal, metal oxide or metal nitride, suitable for producing a transparent layer via deposition by sputtering, and includes cations of a coloring metal from the group made up of transition elements which, in oxided form, have a cation that absorbs electromagnetic radiation in the visible spectrum. The cations of the coloring metal are in a proportion between 10% and 70% atomic percentage of the cations with respect to the cation of the predominant metal in said absorbent layer.

Abstract: Article in the form of a slab or flag fabricated from stone agglomerate coated with thin, transparent films of TiO2 or ZnO, using dry deposition techniques, with a high level of resistance to solar degradation. The article has the form of a slab or flag fabricated from stone agglomerate coated with a thin, transparent film of TiO2 and/or ZnO with low or zero photocatalytic activity, the film being deposited by dry deposition, physical vapour deposition (PVD) or plasma enhanced chemical vapour deposition (PECVD) techniques. The article has a high level of resistance to solar degradation, which means that the resulting material is suitable for external environments.