Abstract: A method for manufacturing a double-layer heat-exchange wall including first and second metal layers includes the following successive steps: (i) providing a first metal sheet forming the first layer, a second metal sheet forming the second layer, and a leaf of iron Fe0 having a thickness of between 10 ?m and 100 ?m; (ii) assembling the first and second metal sheets and the leaf of iron Fe0, the leaf interposed between the first and second metal sheets; (iii) mechanical pressing of the assembly at a minimum pressure of 1 MPa; (iv) peripheral welding of the pressed assembly; and (v) heat treatment of the welded assembly, the heat treatment being implemented by hot isostatic pressing conducted at a temperature of between 800° C. and 1200° C., at a pressure of between 108 Pa and 2.108 Pa, for a period of between 1 hour and 3 hours.

Abstract: A method for producing a uniaxial stress state in a semiconductive layer, may include: providing a stack including a support, the semiconductive layer, and an inserted fuse layer; forming a stress donor layer on the semiconductive layer; partially altering the stress donor layer, modifying a first stress state of the layer to obtain a second stress state in one single direction; and melting the fuse layer, such that the stress donor layer transfers, by relaxation, the second stress state into the semiconductive layer.

Abstract: A molten salt nuclear reactor of the fast neutron reactor type may be designed as a cylindrical shell in the reactor vessel free of moderator or at the very least of a moderator enabling a reactor to be qualified as a thermal neutron reactor, which may make it possible to effectively separate the fluid zones between those delimited at its periphery in which the heat exchanger(s) exchanging heat between primary and secondary circuit is (are) arranged and the zone inside the shell of which the bottom defines the reactor core within which the nuclear fission chain reactions occur, and a neutron reflector at the periphery of the core makes it possible to use a plurality of types of fuel liquid.

Abstract: A method provisions keys in a network of connected objects, including a plurality of such objects as well as a programming station. The nodes of the network could communicate over a main channel and over a secure auxiliary channel, distinct from the main channel. After a first phase of authentication and mutual identification with the nodes of the network, a terminal including a secure hardware element, broadcasts, in a second phase, a set of secret keys to each node, via the auxiliary channel, the set of secret keys including a first secret key intended to authenticate the nodes belonging to the network and a second secret key, intended to encrypt the exchanges over the main channel. In a third phase, the programming station performs a discovery of the nodes of the network.

Abstract: A fast and dynamic configuration method for scheduling the transmission of flows in deterministic networks is provided. This method allows, when a new flow appears within the network, a decision to be made concerning a new schedule for transmitting flows, and allows it to be deployed in the network so as to assume this new flow without compromising the QoS of the other flows already present in the network.

Abstract: A method is provided for modifying a strain state of a block of a semiconducting material including steps in the following order: a) making a lower region of the block of the semiconducting material resting on a substrate amorphous, while a crystalline structure of an upper region of the block in contact with the lower region is maintained, then b) forming a stressing zone on the block of the semiconducting material, then c) making at least one creep annealing with a suitable duration and temperature to enable creep of the lower region without recrystallizing a material of the lower region, and then d) making at least one recrystallization annealing of the lower region of the block.

Abstract: A process for fabricating a detecting device includes producing a getter pad based on amorphous carbon resting on a mineral sacrificial layer that covers a thermal detector and producing a thin encapsulating layer that rests on the mineral sacrificial layer and that covers an upper face and sidewalls of the getter pad. The mineral sacrificial layer is removed via a first chemical etch, and a protective segment of the getter pad is removed via a second chemical etch.

Abstract: A surface treatment method includes providing a substrate with a surface having areas of selective epitaxy of a first material and masses of matter of the first material; forming a protection layer, produced in a second material, on the surface of the substrate; and forming a flattening layer on the protection layer. Areas of the flattening layer facing the masses of matter and top areas of the protection layer are removed so as to expose the masses of matter. Lateral areas of the protection layer are etched by a selective wet chemical etching. The flattening layer is removed; the masses of matter are etched, the protection layer forming an etch mask; and protection layer is removed.

Abstract: A method for protecting active layers of electronic chips including the following successive steps: using a stack comprising, successively: a carrier substrate, a hybrid bonding interface, electronic chips, each comprising successively an active layer, a dielectric layer, and an initial substrate, forming a first encapsulating layer about the electronic chips, removing a part of the initial substrate by grinding and preserving a remaining part, forming a second encapsulating layer about the electronic chips, performing a directional etch of a part of the second encapsulating layer to: superficially expose the remaining part of the initial substrate, and preserve the second encapsulating layer extending over the flanks of the electronic chips, and performing a selective chemical etch of the remaining part of the initial substrate.

Abstract: A process for manufacturing an electroluminescent device, comprising: (a) using a stack comprising, successively: a substrate having a surface; matrix arrays of pixels formed on the surface of the substrate, of columnar shape; an encapsulating layer arranged to cover the matrix arrays of pixels; a dielectric layer formed on the encapsulating layer; (b) performing a directional etch along the normal to the surface of the substrate, of a portion of the dielectric layer extending between the pixels of the matrix arrays of pixels; the dielectric layer having a portion remaining at the end of step (b); and (c) performing a selective chemical etch of the remaining portion of the dielectric layer with a chemical etchant that permits selective etching of the remaining portion of the dielectric layer with respect to the encapsulating layer.

Abstract: An interconnector for an electrochemical module includes a stack of electrochemical cells and interconnectors, each cell being disposed between two interconnectors and in electrical and mechanical contact with the interconnectors, and electrical insulating elements between two interconnectors and surrounding a cell. The interconnector includes at least one intermediate plate received between two end plates defining gas supply and gas collection chambers therebetween. The intermediate plate includes a central region delimited externally by a lateral region having n lateral branch regions, n being at least equal to 1, each lateral extension being configured to be movable towards and to come into contact with a lateral extension of an intermediate plate of a directly adjacent interconnector in the stack, so as to provide electrical conduction between the two interconnectors, the intermediate plate not being covered by at least one of the two end plates at a lateral branch region.

Abstract: Methods and devices for detecting a defect in a rail of a railway track, include at least two sensors selected from among magneto-acoustic and/or piezoelectric and/or magnetostrictive transducers; each sensor being associated with a timestamping circuit of a GNSS satellite positioning system; a measuring circuit for measuring, by way of the sensors, the acousto-elastic waves propagating in the rail, the wave or signal measurements being timestamped. Some developments describe notably active and passive modes; the use of train crossings; the emission of waves; the determination of the existence and then of the position and finally the characterization of the defect, where applicable; preferred placements for installing the sensors; the use of inter-correlation, passive inverse filter or correlation of coda of correlation methods; the use of mobile robots and/or drones; the use of artificial noise sources.

Abstract: A scanner provided with a plurality of elementary scanners, especially two elementary scanners, referred to as a first and second scanner respectively. In particular, the first scanner and the second scanner are arranged to scan, each with an optical beam, respectively, a first surface and a second surface included in the first surface and of a smaller extent than the latter.

Abstract: A system for determining power generated by a nuclear core assembly immersed in heat transfer fluid. Light radiation reflected from the blades of a rotor located in the heat transfer fluid is used to determine the rotation speed of the rotor. The flow rate of the heat transfer fluid is determined based on the rotation speed. A difference in temperature between an inlet and an outlet of the assembly is calculated. Power generated by the assembly is determined based on the flow rate and the temperature difference.

Abstract: A radiation detector may include an active structure having an input face and an output face for incident ionizing radiation. The active structure may include: a first organic scintillator including at least one neutron-absorbing material and enabling discrimination between fast neutrons, thermal neutrons, and photons; at least one second scintillator arranged in front of the first scintillator and capable of preferentially detecting the alpha and/or beta radiation, the two scintillators having, due to the choice of their constituents, different mean pulse decay constants, and the second scintillator having a thickness smaller than the first.

Abstract: A method for electrically characterising a cut photovoltaic cell, includes measuring the feature I-V of the uncut cell; cutting the cell into a plurality of sub-cells; measuring the feature I-V of each sub-cell not electrically connected to the other sub-cells; measuring the feature I-V of a set comprising all the sub-cells connected in parallel; determining, on the basis of the measured features I-V, performance parameters of the uncut cell, of each sub-set and of the set; computing, for each sub-cell, the difference between the value of the performance parameters of the sub-cell and that of the performance parameter of the uncut cell; and computing the difference between the value of the performance parameter of the set and the value of the performance parameter of the uncut cell.

Abstract: A force sensor includes at least one cavity defining at least two surfaces having different orientations. On each of said surfaces is disposed at least one respective detection structure sensitive to a pressure exerted on the corresponding surface. A resiliently deformable medium at least partially fills the cavity by coming into contact with the surfaces and defines a detection surface, on which a force to be detected is likely to be exerted. The application of this force is likely to generate stresses on each detection structure due to the transmission of forces by the medium.

Abstract: A system for conditioning a plurality of stacks of solid oxide cells of the SOEC/SOFC type, includes: a thermal enclosure delimiting an internal volume; a frame, positioned on either side of the thermal enclosure; a first crosspiece device, mounted on the frame in a movable manner relative thereto; a plurality of clamping rods, intended to contact the stacks to allow them to be clamped; a plurality of elastic return members fixed to a clamping rod and to the first crosspiece device such that each clamping rod is supported by an elastic return member capable of being compressed under the effect of the weight of the clamping rod.

Abstract: The invention essentially consists in using in combination a thermal storage loop, arranged between the primary circuit and secondary circuit of a reactor, with a dry-air cooling device connected to the condenser of the secondary circuit.

Abstract: Embodiments of the disclosure relate to a composition including 70 to 95 parts by weight of an epoxide resin having a viscosity of between 1 and 150 kPa·s at a temperature of between 20° C. and 25° C., and 5 to 30 parts by weight, per 100 parts by weight of resin present in the composition, of a curing agent dispersed in the resin, the curing agent being an ionic liquid containing a phosphonium cation. The disclosure also relates to a semi-finished product or towpreg, including a bundle of fibres and a composition. The disclosure also relates to the use of a composition or of a semi-finished product according to the disclosure for the production of a hydrogen tank, in particular a type IV pressure tank, made of composite material, for the on-board storage of hydrogen gas.