Abstract: A non-destructive method for characterizing and monitoring the homogeneity of metal parts which are being manufactured by sintering and comprise several distinct zones. Laser radiation is applied successively to each zone and each sintered zone is analyzed simultaneously in real time by lock-in laser-active radiometry.

Abstract: A method for transferring a thin layer from a donor substrate to a receiver substrate including the steps of implantation of species carried out in a uniform manner on the whole of the donor substrate to form therein an embrittlement plane which delimits the thin layer and a bulk part of the donor substrate, of placing in contact the donor substrate and the receiver substrate and of initiating and propagating a fracture wave along the embrittlement plane. The method comprises, before the placing in contact, a step of localised reduction of a capacity of the embrittlement plane to initiate the fracture wave. This step of localised reduction may be carried out by means of a localised laser annealing of the donor substrate.

Abstract: A magnetic field sensor includes at least one coil responsive to an AC coil drive signal; at least one magnetic field sensing element responsive to a sensing element drive signal and configured to detect a directly coupled magnetic field generated by the at least one coil and to generate a magnetic field signal in response to the directly coupled magnetic field; a processor responsive to the magnetic field signal to compute a sensitivity value associated with detection of the directly coupled magnetic field and substantially independent of a reflected magnetic field reflected by a conductive target disposed proximate to the at least one magnetic field sensing element; and an output signal generator configured to generate an output signal of the magnetic field sensor indicative of the reflected magnetic field.

Abstract: The present description concerns a method of controlling a converter including two H bridges (110, 12) coupled by a transformer (130), wherein: two switching sequences between states are respectively applied to the two bridges; one of the states of a first one of the sequences corresponds to a given direction of application of a voltage to the transformer by the bridge having the first one of the sequences applied thereto; the first one of the sequences varies during a same halfwave of an AC voltage (V1) across one of the bridges (110), so that: during at least a first period, switchings into and out of said one of the states occur in a same state of a second one of the sequences; and during at least a second period, switchings into and out of said one of the states occur in different states of the second one of the sequences.

Abstract: A method of estimating a nitrogen site carbon concentration, in a first epitaxial layer made of carbon-doped gallium nitride of an electronic component, including steps of: estimating an electric capacitance of a stack interposed between the first layer and a first electrode of the component; heating the component; measuring an offset of a threshold voltage of the component; and deducing therefrom a nitrogen site carbon surface concentration in the first layer.

Abstract: A memory comprising: a resistive-switching element having first and second electrodes separated by a layer of insulator; an energy storage component or load coupled to the resistive-switching element via a first switch; and a control circuit configured: to program the resistive-switching element to have a set state, wherein, in the set state, a filament forms a conducting path between the first and second electrodes; and, following a dissolution of the filament, to recover electrical energy, generated by the dissolution of the filament, from one of the first and second electrodes by activating the first switch.

Abstract: The invention relates to a thermal detector (1) for detecting electromagnetic radiation, comprising: a readout substrate (10); a membrane (20) suspended above the readout substrate, comprising: a thermometric transducer (23), and a resistive load (25) that is formed from a track that extends longitudinally to form a closed continuous loop; a collecting antenna (16), which is located away from the suspended membrane (20) and coupled to the resistive load (25), and which comprises a coupling track (16.1), which track is located plumb with the resistive load (25) and extends longitudinally to form an open continuous loop, thus permitting inductive coupling between the coupling track (16.1) and the resistive load (25).

Abstract: A process comprising the following steps of: a) providing a device comprising: a GaN/InGaN structure comprising an electrically conductive doped GaN layer locally covered with InGaN mesas comprising a doped InGaN layer and an undoped or weakly doped InGaN layer, an electrically insulating layer covering the electrically conductive doped GaN layer between the mesas, b) connecting the electrically conductive doped GaN layer and a counter-electrode (500) to a voltage or current generator, c) dipping the device and the counter-electrode into an electrolyte solution, d) applying a voltage or current between the electrically conductive doped GaN layer and the second electrode to porosify the doped InGaN layer, e) forming an InGaN layer by epitaxy on the InGaN mesas, whereby a relaxed epitaxially grown InGaN layer is obtained.

Abstract: A method for determining a membership function, the membership functions allowing a stress level of a user to be determined on the basis of a physiological parameter measured on the user, the membership function varying, depending on the physiological parameter, between: a first value, representative of a rest state; and a second value, representative of a stressed state; the membership function taking into account a distribution function, which is defined beforehand, the distribution function being a continuous and monotonic function, the distribution function being applied to a normalized parameter established on the basis of a measured physiological parameter, the method comprising determining a normalization function, and optionally a standardization function, the normalization function and the optional standardization function being determined on the basis of physiological parameters measured on a plurality of test individuals, in various calibration periods.

Abstract: The invention relates to an optoelectronic device comprising a photonic interposer comprising: a photonic circuit containing at least one active optical component, an upper interconnect layer comprising at least one upper control portion, a lower interconnect layer comprising at least one lower control portion and lower intermediate portions, at least one TSV directly connecting the upper control portion to the lower control portion, conductive vias connecting the lower intermediate portions to the active optical component; at least one first microelectronic chip joined to the upper face of the photonic interposer; a second microelectronic chip joined to the lower face of the photonic interposer, and connected to the lower control portion and to the lower intermediate portions.

Abstract: A method for manufacturing a substrate comprising the following steps of: providing a stack comprising an initial substrate, a GaN layer, a doped InGaN layer and an unintentionally doped InGaN layer, transferring the doped InGaN layer and the unintentionally doped InGaN layer to an anodising support, so as to form a second stack, dipping the second stack and the counter-electrode into an electrolyte solution, and applying a voltage or current between the doped InGaN layer and a counter electrode, to porosify the doped InGaN layer, and relaxing the unintentionally doped InGaN layer, transferring the doped InGaN layer and the unintentionally doped InGaN layer to a support of interest, forming an InGaN layer by epitaxy on the unintentionally doped InGaN layer, whereby a relaxed epitaxially grown InGaN layer is obtained.

Abstract: The invention relates to a device for linearising a power amplifier by employing digital predistortion, comprising: a digital predistortion module, configured to infer a polar domain predistortion to be applied to a signal, and comprising a first neural network and a second neural network respectively configured to correct amplitude and phase distortion produced by the amplifier; an optimisation module of each of said neural networks configured to implement meta-learning, using: a meta-initialisation providing a prior initialisation of the initial weights of each of said neural networks; a meta-matching of the initial weights into optimal weights of each of said neural networks.

Abstract: The present invention concerns a power converter including: a capacitor (CBUS) having first and second electrodes respectively coupled to first (E1) and second (E2) input terminals via a current-limiting element (R1, L1); at least one normally-on transistor (K1, K2, K3, K4, K5, K6); a circuit (170) for powering a circuit (CMD_K1, CMD_K2) for controlling the normally-on transistor; and a switch configurable to, in a first configuration, couple first (g) and second (h) input terminals of the power supply circuit (170) respectively to the first (E1) and second (E2) input terminals of the converter, upstream of the current-limiting element (R1, l1) and, in a second configuration, connect the first (g) and second (h) input terminals of the power supply circuit (170) respectively to the first and second electrodes of the capacitor, downstream of the current-limiting element (R1, L1).

Abstract: This installation for locating impacts comprises an interactive plate, at least three transducers arranged and distributed against the interactive plate in order to pick up progressive mechanical waves propagating therein and to transform them into electrical signals, and an electronic central unit programmed to locate an impact in the interactive plate by an analysis of the electrical signals that it receives from the transducers. It further includes an additional plate attached to the front face of the interactive plate and having an impact-receiving zone, and means for attaching the additional plate to the interactive plate, configured to ensure contact against the entire portion of the front face of the interactive plate located opposite the impact-receiving zone of the additional plate.

Abstract: A method for determination of a state of health indicator of an electrical accumulator includes converting a set of charge and discharge operations into an equivalent set of symmetrical reconstituted cycles and selecting the symmetrical reconstituted cycles. For each selected symmetrical reconstituted cycle the rate of energy supplied by the electrical accumulator during the discharge phase per unit of state of charge amplitude of the electrical accumulator and a total equivalent energy value for a complete charge of the electrical accumulator are determined. The method also includes determining a mean value from total equivalent energy values relating to a plurality of selected symmetrical reconstituted cycles and determining the state of health indicator of the electrical accumulator by dividing the mean value by the value of the nominal energy capacity of the electrical accumulator.

Abstract: The present description concerns a converter comprising: a circuit (C1) supplying a first pulse (P1) determined by an interval between an active edge of a first signal (S1) and an active edge of a second signal (S2); a circuit (INT) which, at each first pulse (P1), integrates the first pulse (P1), a second pulse (P2) starting after the first pulse (P1) in synchronism with a clock signal (clk), and a third pulse (P3) starting after the third pulse (P3) in synchronism with the clock signal (clk); a circuit (C3) sampling over one bit (OUT1) an output signal (RES1) of the integrator circuit (INT) at the beginning of each third pulse (P3); and two circuits (C2, C4) generating, for each first pulse (P1), respectively the corresponding second pulse and the third corresponding pulse based on the first bit (OUT1).

Abstract: A bellows including a cylindrical and corrugated side wall, extending about a longitudinal axis, the side wall including: an alternation of crests and of troughs, forming corrugations; flanks, each flank extending between a crest and a trough, each corrugation having a first flank and a second flank that are opposite, separated by a same trough; the bellows includes at least one elementary electrical circuit associated with a corrugation, the elementary electrical circuit includes a first conductive element and a second conductive element, extending along the first flank and/or the second flank, the first conductive element being separated from the second conductive element; a first conductive track and a second conductive track, linked respectively to the first conductive element and to the second conductive element, and the first conductive track and the second conductive track are configured to be connected, to a detector of closure of the elementary electrical circuit.

Abstract: A method of treatment of an electronic circuit including at a location at least one electrically-conductive test pad having a first exposed surface. The method includes the at least partial etching of the test pad from the first surface, and the forming on the electronic circuit of an interconnection level covering said location and including, on the side opposite to said location, a second planar surface adapted for the performing of a hybrid molecular bonding.

Abstract: Manufacturing a handle substrate includes: providing a support substrate having a receiving face; depositing an anti-adherent formulation including a first solvent over the receiving face of the support substrate so as to form a film; depositing a liquid formulation over a face of the film, before the complete evaporation of the first solvent, the liquid formulation being intended to form an adhesive layer; and evaporating the first solvent so as to obtain an anti-adherent film from the film in order to obtain the handle substrate and to obtain a bonding energy between the anti-adherent film and the adhesive layer lower than about 1.2 J/m2. The step of depositing of a liquid formulation is carried out when the face of the film has a water drop angle smaller than 65 degrees, so as to avoid any risk of dewetting of the liquid formulation.

Abstract: The present disclosure relates to an event-driven sensor comprising: a pixel array (102); a column readout circuit (104) comprising, for each of the column output lines, a column register cell (108) configured to activate a column event output signal (addrx) when it receives a first token while the detection of an event is indicated on the column output line; and a row readout circuit (106) comprising, for each of the row output lines, or for each of a plurality of sub-groups of the row output lines, a row register cell (108) configured to activate a row event output signal (addry) when it receives a second token while an event is indicated on the row output line, or on one of the row output lines of the sub-group.