Abstract: A method for performing selective etching of a semiconductor material in solution having the following successive steps: a) providing a substrate having a layer of amorphous semiconductor material to be etched and a layer of crystalline semiconductor material; b) oxidizing the surfaces of the layers of amorphous semiconductor material and of crystalline semiconductor material so as to form a first protective layer at the surface of the amorphous semiconductor material and a second protective layer at the surface of the crystalline semiconductor material; c) etching the first protective layer and the layer of amorphous semiconductor material with an alkaline etching solution, the etch rate v1 of the first protective layer being higher than the etch rate v2 of the second protective layer.

Abstract: An optoelectronic device including a semiconductor substrate having a face, light-emitting diodes arranged on the face and including wired conical or frustoconical semiconductor elements, and an at least partially transparent dielectric layer covering the light-emitting diodes, the refractive index of the dielectric layer being between 1.6 et 1.8.

Abstract: An optical filtering structure comprising a stack of layers forming a first filter letting pass a first spectral band, and a second filter adjacent to the first filter and which lets pass a second spectral band comprising: a plurality of dielectric layers common to the two filters and of different refractive indices, n first metal layers common to the two filters, m second metal layers arranged only in the second filter, and wherein at least one of said dielectric layers comprises, in the first filter, a thickness different to that in the second filter, and/or wherein at least one dielectric layer is arranged only in the second filter, n being an integer greater than or equal to 0, and m being an integer greater than or equal to 1.

Abstract: A method of manufacturing an electronic device including a film, including the steps of forming at least one layer of a solution including a solvent and a compound including a polymer selected from the group including poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) (P(VDF-TrFE-CFE)), poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene) (P(VDF-TrFE-CTFE)) and a mixture of these compounds, the molecular rate of chlorine in the copolymer being greater than or equal to 3%; and irradiating at least the layer with pulses of at least one ultraviolet radiation.

Abstract: A device for cutting a wire piece, configured to move with respect to the wire piece, including: at least first and second rotary members rotating around respective first and second substantially parallel axes of rotation, the at least one first and second rotary members driving the wire substantially perpendicular to the first and second axes, the wire resting against external surfaces of each of the at least one first and second rotary members. At least one of the at least one first and second rotary members includes a lubrication mechanism of the wire to allow circulation of a lubricating liquid from the center thereof to an external surface thereof in contact with the wire, the lubrication mechanism including a lubrication liquid feed device, mounted on the axis of rotation of the at least one of the first and second rotary members, to supply the center thereof with lubrication liquid.

Abstract: A plasmonic optical filter, including: a periodic repetition of metal slabs above a metal surface; dielectric spacers arranged between the slabs and the metal surface so that there exists an empty space between each slab and the metal surface; and an opening between each of said empty spaces and the outside.

Abstract: A method of manufacturing a layer containing quantum dots, the layer including first regions where the quantum dots are active and second regions where the quantum dots are inactive, the method including: a) depositing on a support a first layer of a matrix containing quantum dots; b) depositing on the first layer a second resist layer; c) exposing the second layer to light through a mask delimiting the first and second regions, and then developing the resin of the second layer to remove the resin of the second layer opposite the second regions while keeping it opposite the first regions; and d) removing the resin of the second layer opposite the first regions without removing the first layer.

Abstract: A device for detecting the theft of an object, intended to be integrated to said object, includes an antenna for receiving a remote-supply signal and means for detecting an interruption of the remote-supply signal. Means for delivering an alarm signal when the interruption of the remote-supply signal is detected are also provided.

Abstract: The invention relates to a process for preparing an Al/TiC nanocomposite material comprising an aluminum matrix in which particles comprising nano-sized TiC are dispersed. It comprises: a) preparing a first powder mixture by contacting a graphite powder with a titanium aluminide powder of the formula Al3Ti, both powders having micro- or higher sized particles; b) preparing a second powder mixture by mechanosynthesis of the first powder mixture, the second powder mixture being formed in all or part by particles comprising both titanium aluminide and graphite; c) compressing the second powder mixture to obtain one or more greens; d) reactively sintering the green(s), thereby the Al/TiC nanocomposite material is obtained.

Abstract: A multi-port memory cell including: first and second magnetoresistive elements, each of which is programmable so as to adopt at least two resistive states, in which: the first magnetoresistive element is coupled with a first output line and is programmable by the direction of a current which is passed through same; and the second magnetoresistive element is coupled with a second output line and is arranged so as to be magnetically coupled with the first magnetoresistive element, the second magnetoresistive element being programmable by a magnetic field generated by the first magnetoresistive element.

Abstract: An automotive vehicle drive unit, comprising a fuel cell whose control input is a setpoint of the electrical power to be delivered by the fuel cell. There is a reversible electrical energy storage system and an electric motor to propel the wheels of a vehicle. An electrical connection element selectively connects the fuel cell and/or the energy storage system to the electric motor. A control circuit stores a model of the consumption of dihydrogen as a function of the power delivered by this fuel cell, in the form of a second-degree polynomial and is configured to compute a coefficient of power distribution ?1 between the fuel cell and the electrical energy storage system pursuant to a defined equation. The control circuit controls the electrical connection element to recharge the energy storage system when the value of the power setpoint Pfc* is greater than the power demanded by the electric motor.

Abstract: A device for fractionation of a fluid containing particles and extraction of a particle-lean volume and a particle-rich volume, including: a cylindrical reservoir including an inlet orifice to supply the reservoir with fluid in a pumping direction from first to second ends of the reservoir; a fractionation body extending along a central axis of the reservoir, an upstream end positioned in vertical alignment above the inlet orifice, a cross section of the fractionation body reducing sharply at its downstream end; the fractionation body defining, with the reservoir, a first passage opening at the downstream end onto a recirculation zone with a geometric singularity; and an extraction mechanism downstream of the fractionation body to separate and extract the lean and rich volumes, including a partition delimiting an extraction volume configured, as fluid circulates in the pumping direction, to receive the particle-lean phase formed in the recirculation zone.

Abstract: Method for fabricating an electrochemical device, such as an electrochromic system or an energy storage system, including the following successive steps: providing a substrate; forming n individual entities on the substrate, with n greater than or equal to 2, each individual entity including: a first current collector, of a first polarity, a first electrode, an ionically conductive and electrically insulating thin layer, a second electrode, a second current collector, of a second polarity; cutting the substrate, cutting being performed so as to have at least x complete individual entities, on the substrate, with x greater than or equal to 2 and x less than or equal to n; electrically connecting the current collectors of the same polarity of the x complete individual entities in parallel.

Abstract: A content addressable memory having at least one CAM cell including first and second inverters cross-coupled between first and second storage nodes; a first transistor coupling the first storage node to a bitline, the first transistor being controlled by a first control signal; a second transistor coupling the second storage node to the bitline, the second transistor being controlled by a second control signal; and a control circuit adapted to perform a CAM read operation by pre-charging the bitline to a first voltage level, and then selectively activating either the first or second transistor based on a bit of input data.

Abstract: A calibration method for a CD-SEM technique, includes determining a match function converting at least one parameter obtained by modelling a measurement supplied by the CD-SEM technique into a function of at least one parameter representative of a measurement supplied by a characterisation technique different from the CD-SEM technique, the match function being characterised by a plurality of coefficients; performing measurements on a plurality of patterns chosen to cover the desired validity range for the calibration, the measurements being done using both the CD-SEM technique to be calibrated and the reference technique; determining, from the measurements, a set of coefficients of the match function minimising the distance between the functions of the parameters measured using the reference technique and applying the match function to the parameters obtained by modelling measurements supplied by the CD-SEM; using the set of coefficients during the implementation of the calibrated CD-SEM technique.

Abstract: A circuit for generating a negative voltage on the basis of a positive voltage, including: at least one first transistor between a first terminal for applying a potential greater than a reference potential and a first node; a first capacitive element between the first node and a second node, a control terminal of said first transistor being linked to the second node; a first switch between the first node and a second terminal for applying the reference potential; a second switch between the second node and a third terminal for providing said negative voltage; a third switch between the second node and the second terminal; and a second capacitive element between the third terminal and the second terminal.

Abstract: The invention proposes a method for the transmission of data in a cooperative network comprising a source terminal (S), a destination terminal (D) and a relay terminal (R), comprising: in a first transmission (T1), the transmission of the data of a packet by the source terminal (S) to both the relay terminal (R) and the destination terminal (D); in the event of failure (N1) of the destination terminal (D) to successfully decode the data in the packet of the first transmission, and in the case of the data of the first transmission being successfully (O2) decoded by the relay terminal (R), the relay terminal transmits the data of the packet to the destination terminal in a second transmission (T2); in the event of failure (N3) of the destination terminal to successfully decode the data in the packet of the second transmission (T2), selection of the source terminal and/or relay terminal to retransmit the data of the packet to the destination terminal in a third transmission (T3), where the selection may be ba

Abstract: An energy harvester having a converter suitable for converting a variation of the energy to be harvested into a corresponding excess of electrical charges. There is a circuit for collecting the excess of electrical charges, the circuit is equipped with a controllable switch and a control device for the switch designed to control the switching of this switch to its closed position. The control device is suitable for exerting a force which stresses the electrical contacts towards one another. The force varies continually as a function of the quantity of electrical charges present on the first terminal and bringing the electrical contacts to bear on one another only when the excess of electrical charges exceeds a predetermined threshold, and/or for ionizing the electrically insulating medium to produce an electrical arc between the two electrical contacts only when the excess of electrical charges exceeds the predetermined threshold.

Abstract: The invention relates to a method for directly adhering a lower substrate to an upper substrate which includes the following steps: a) providing a mounting; b) positioning the lower substrate on the mounting, the mounting being configured such as to raise a portion of the lower substrate; c) positioning the upper substrate above the lower substrate; d) allowing the upper substrate to fall by gravity onto the lower substrate such as to form an initial contact point between the upper substrate and the lower substrate, located on the raised portion of the lower substrate; and e) completing the contact between the upper substrate and the lower substrate such as to adhere the upper substrate to the lower substrate by direct adhesion.

Abstract: A method of manufacturing a photodiode including a useful layer made of a semi-conductor alloy. The useful layer has a band gap value which decreases from its upper face to its lower face. A step of producing a first doped region forming a PN junction with a second doped region of the useful layer, said production of a first doped region including a first doping step, so as to produce a base portion; and a second doping step, so as to produce at least one protuberance protruding from the base portion and in the direction of the lower face.