Abstract: The recording medium comprises at least a first (L1) and a second (L2) micro-structured stage assembled by an adhesive layer (4) and arranged between micro-structured bottom (2) and top substrates. A polymerizable layer forming the adhesive layer (4) is deposited on the first stage (L1). Then a micro-structured transparent matrix (5) is provisionally placed on the adhesive layer (4) so as to micro-structure the adhesive layer (4). Polymerization of the adhesive (4) is performed by exposure, through the matrix (5), with a polymerization light. Then the matrix (5) is removed and the second stage (L2) is deposited on the micro-structured adhesive layer (4). Then an additional adhesive layer (9) is deposited on the second stage (L2) and the micro-structured matrix (5) is definitively placed on the additional adhesive layer (9) so as to form the top substrate.

Abstract: The method of coating the area of hybridization of a component that is constituted by two elements bonded to one another by means of a soldering material, including depositing proximate to the component a coating substance capable of filling by capillarity action the volume defined between the hybridized elements of the component. Further, along the periphery of the hybridization area on the lower element of the component is an area of non-wettability in regards to the coating substance, that is defined by depositing an anti-wetting covering of PECVD in regards to the coating substance, whereby the anti-wetting covering on the first element encompasses the hybridization area and surrounds a wetting surface for the coating substance.

Abstract: The invention relates to the use of a composition comprising a chlorinated polyester resin in which the polyester satisfies formula (I) below: together with a crosslinking catalyst and a crosslinking accelerator in order to plug a crack affecting the wall of a metal device intended to contain a radioactive acid material. It is especially applicable in the maintenance of metal equipment of nuclear installations, in particular equipment that is for irradiated nuclear fuel reprocessing.

Abstract: This method of coating the area of hybridization of a component constituted by two elements associated with one another by means of a soldering material, comprises depositing in proximity to said component a coating substance capable of filling by capillarity the volume defined between the hybridized elements of said component. On the periphery of the hybridization area on the lower element of said component is defined an area (10) of non-wettability as regards said substance, by deposition of a covering anti-wetting as regards said substance, applied by PECVD, and defining on said first element, in line with the hybridization, a wetting surface for the coating substance.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4—, —CO—C6D4— and —C6D4—. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4-, —CO—C6D4- and —C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: A method for soldering or hybridizing two components to each other by means of a solder material, including producing, on the opposite-facing surfaces of the components to be soldered or hybridized, a surface capable of being wetted by said solder material, this surface being produced on a first component which is in electrical contact with a metallic conductor, depositing an appropriate quantity of solder material capable of constituting a solder or hybridization pad on one of the wettability surfaces, depositing a flux material in liquid form, bringing the wettability surface of the other component into contact with the solder material thus deposited and raising the temperature until at least the melting temperature of the solder material is reached in order to ensure effective soldering or hybridization of the two components to each other due to the reflow effect.

Abstract: The recording medium comprises at least a first (L1) and a second (L2) micro-structured stage assembled by an adhesive layer (4) and arranged between micro-structured bottom (2) and top substrates. A polymerizable layer forming the adhesive layer (4) is deposited on the first stage (L1). Then a micro-structured transparent matrix (5) is provisionally placed on the adhesive layer (4) so as to micro-structure the adhesive layer (4). Polymerization of the adhesive (4) is performed by exposure, through the matrix (5), with a polymerization light. Then the matrix (5) is removed and the second stage (L2) is deposited on the micro-structured adhesive layer (4). Then an additional adhesive layer (9) is deposited on the second stage (L2) and the micro-structured matrix (5) is definitively placed on the additional adhesive layer (9) so as to form the top substrate.

Abstract: The invention relates to the use of a composition comprising a chlorinated polyester resin in which the polyester satisfies formula (I) below: together with a crosslinking catalyst and a crosslinking accelerator in order to plug a crack affecting the wall of a metal device intended to contain a radioactive acid material. It is especially applicable in the maintenance of metal equipment of nuclear installations, in particular equipment that is for irradiated nuclear fuel reprocessing.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4-, —CO—C6D4- and —C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z-??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4-, —CO—C6D4- and —C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): —A1—Z— ??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4—, —CO—C6D4— and —C6D4—. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.

Abstract: The present invention relates to a deuterated polyimide, the backbone of which comprises an alternation between: at least one repeat unit corresponding to the following formula (I): in which: Y represents a single bond or a spacer group; and at least one repeat unit corresponding to the following formula (II): -A1-Z- ??(II) in which: A1 represents a perdeuterated aromatic group comprising from 6 to 10 carbon atoms; Z represents a single bond or a group chosen from —O—C6D4-, —CO—C6D4- and —C6D4-. These polyimides are used in particular as materials which are transparent within the region from 2500 to 3500 cm?1, for example in laser devices.