Abstract: The invention relates to a porous material in the form of microspheres based on iridium and/or iridium oxide, its preparation process, its use as anodic catalyst in a water electrolyser based on a solid polymer electrolyte, also called PEM water electrolyser (with PEM meaning “Proton Exchange Membrane” or “Polymer Electrolyte Membrane”) or for the manufacture of light-emitting diodes for various electronic devices or for cars, and a PEM water electrolyser comprising such a material as an anode catalyst.

Abstract: The present invention pertains to the field of nanoimprint lithography (NIL) processes and more specifically to a soft NIL process used for providing a sol-gel patterned layer on a substrate. Specifically, this process comprises a step of adjusting the solvent uptake of the sol-gel film to 10 to 50% vol., preferably between 15 and 40% vol., by varying the relative pressure of the solvent while a soft mould is applied onto the substrate coated with the sol-gel film.

Abstract: The invention relates to a porous material in the form of microspheres based on iridium and/or iridium oxide, its preparation process, its use as anodic catalyst in a water electrolyser based on a solid polymer electrolyte, also called PEM water electrolyser (with PEM meaning “Proton Exchange Membrane” or “Polymer Electrolyte Membrane”) or for the manufacture of light-emitting diodes for various electronic devices or for cars, and a PEM water electrolyser comprising such a material as an anode catalyst.

Abstract: An active glazing system (100) includes a double glazing, with two transparent plates (1a, 1b) that together delimit an intermediate volume (2) filled with gas. The system further includes a control device (10) that is capable of producing a transition in a volatile compound present in the intermediate volume, between a dry vapor state and a supersaturated vapor state of the volatile compound. Switching processes can therefore be controlled for the double glazing, between a transparent optical state and a diffusing optical state. Such a system can be used as building or vehicle glazing, an interior partition arrangement, a projection screen, a solar diffuser, a light source diffuser, a vision blurring device, etc.