Nederlandse Organisatie Voor Toegepast-natuurwetenschappelijk Onderzoek Tno

Ruma Products B.v.

Evert Jonathan Van Den Ham

Arjen Boersma

Javier Nunez Villanueva

Walter Stam

Timotheus Kees Theodorus Wolterbeek

Erik Kerst Cornelissen

Javier NUÑEZ Villanueva

A downhole seal is proposed which has a COswellable elastomer which swells when in contact with CO. The downhole seal can be set by installing a downhole seal comprising a COswellable elastomer in a downhole location within a borehole, and exposing the downhole seal to contact with COafter installing, whereby the COcauses the downhole seal to swell.

Downhole seal and method of setting a downhole seal

A sensor system, the manufacturing of such system, and the use of such system for optical detection of a target analyte in a gaseous medium are described. The sensor system includes a hollow waveguide that is provided with a reflective mirror layer along its inner wall and a concentrating coating of an inorganic sorption material. The mirror layer defines a light path for guiding light between a light inlet and a light outlet that are provided on opposing terminal ends of the hollow waveguide. The concentrating coating increases an effective concentration of target analytes, if present, and allows optical, preferably spectroscopic, analysis of the medium by recording transmission of light, preferably infrared light, guided through the hollow waveguide.

Hollow waveguide for gas detection

A method is described of manufacturing an optical sensing element for detecting a presence and/or determining a concentration of an analyte in a fluid medium, in particular in an aqueous medium. The optical sensing element includes an optical waveguide (e.g. an optical fiber) comprising an optically transparent material for guiding light through the sensing element along a flightpath. The optical sensing element further includes an inorganic coating for adsorbing the analyte from the fluid medium and an adhesion promotion layer formed between the optical waveguide and the inorganic coating. The adhesion promotion layer includes an adhesion promotion material for promoting adhesion of the inorganic material.

Waveguide with outer coating for analyte detection

The invention discloses a method of preparing a current collector surface enriched with cathode active material. The method comprises preparing a precursor solution by dissolving at least two metal salts and one or more organic acids in a first solvent, adding one or more basic compounds and one or more non-metallic salts to the precursor solution, diluting the precursor solution by adding a second solvent, preparing a surface-treated current collector by disposing at least part of the diluted precursor solution on a current collector surface material, and heating the surface-treated current collector at a temperature of 500° C. or less under an oxidative or inert atmosphere, thereby decomposing the diluted precursor solution.

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Wijk en Aalburg, Netherlands

Evert Jonathan Van Den Ham