Abstract: A membrane for collecting airborne particles, the membrane taking the form of a strip composed of a matrix formed from a mixture of a polymer and of a filler that is made of an electrical conductor, a hydrophilic layer for collecting particles, on which layer is deposited said matrix so as to form at least one composite layer, the membrane including at least one region obtained via a surface treatment of the hydrophilic layer.

Abstract: Method for transferring a useful layer onto a supporting substrate, comprising the successive steps: a) providing a donor substrate made of crystalline diamond; b) implanting gaseous species, through the first surface of the donor substrate, according to a given implantation dose and implantation temperature suitable for forming a graphitic flat zone; c) assembling the donor substrate to the supporting substrate by direct adhesion; d) applying thermal annealing according to a thermal budget suitable for fracturing the donor substrate along the graphitic flat zone; the annealing temperature being greater than or equal to 800° C.

Abstract: The present invention relates to an energy storage system (10) comprising a plurality of electrical module packs (12) connected in series, each electrical module pack (12) having a positive terminal and a negative terminal, the voltage at the terminals of each electrical module pack (12) being equal to the potential difference between the positive terminal and the negative terminal of the pack (12), the voltage at the terminals of the system (10) being equal to the sum of the voltages of the connected electrical module packs (12), each electrical module pack (12) being supported by a frame (20), each frame (20) being set at a reference potential, characterized in that the reference potential of each frame (20) is broadly between the positive terminal potential and the negative terminal potential of the electrical module pack (12) supported by the frame.

Abstract: The present invention relates to a radio frequency antenna (10) including an antenna array (12) operating at one wavelength and comprising: a powered dipole (14A) connected at an access point (15) to a radio frequency transmitter generating or receiving a wave at the wavelength, at least one coupled dipole (14C1, 14C2, 14C3) connected at an access point to a respective load (Z1, Z2, Z3), the powered dipole (14A) and each coupled dipole (14C1, 14C2, 14C3) including two strands extending from the access point (15), the access points (15) being arranged so as to form a polygon, the first strand of a dipole (14) extending along the second strand of a neighboring dipole (14) at a distance less than one tenth of the wavelength.

Abstract: The present invention concerns a method for programming a Bayesian neural network (BNN) in a RRAM memory. After the BNN has been trained on a dataset D, the joint posterior probability distribution of the synaptic coefficients, p(w|D) is decomposed into a mixture of multivariate mean-field Gaussian components by GMM. The weighting coefficients and the parameters of these multivariate Gaussian components are estimated by MDEM (Multi-Dimensional Expectation Maximization) with two constraints. According to the first constraint, the off-diagonal terms of the covariance matrix of each component are forced to zero. According to the second constraint, the couples of mean values and diagonal terms of the covariance matrix of each component are constrained to belong to a hardware compliance domain determined by a relationship between the conductance mean value and conductance standard deviation of a memristor programmed by a SET or RESET operation.

Abstract: A fluidic component including a fluidic circuit having at least one fluidic access through which a fluid is intended to pass, an actuator capable of expanding, a deformable membrane that can be actuated by the expansion of the actuator, sealing device for sealing off the fluidic access and including at least a body made of a meltable compound configured to adopt two states: a solid first state, a molten second state obtained under the effect of an increase in temperature, the body of meltable compound being designed to be moved in the molten state, by the expansion of the actuator, between a standby position and a distinct sealing-off position for sealing off the fluidic access.

Abstract: The fabrication of a first waveguide made of stoichiometric silicon nitride, of a second waveguide made of crystalline semiconductor material and of at least one active component optically coupled to the first waveguide via the second waveguide. The method includes: a) the formation of an aperture which passes through an encapsulation layer of the first waveguide and emerges in or on a substrate made of monocrystalline silicon, then b) the deposition by epitaxial growth of a crystalline seeding material inside the aperture until this crystalline seeding material forms a crystalline seed on a top face of the encapsulation layer, then c) a lateral epitaxy, of a crystalline semiconductor material from the crystalline seed formed to form a layer made of crystalline semiconductor material wherein the second waveguide is then produced.

Abstract: A method of controlling a switch, including: a) applying a control signal to a control terminal of the switch, said control signal exhibiting at least one first switching between a switch turn-on control state and a switch turn-off control state; and b) applying a switch turn-off potential on said control terminal after a first delay starting at said first switching, the first delay being greater than the turn-off time.

Abstract: A capacitive logic cell with complementary control, including a variable-capacitance electromechanical device having a fixed part and a mobile part, the electromechanical device comprising first, second, third and fourth electrodes mounted on the fixed part, and a fifth electrode mounted on the mobile part, the first electrode being connected to a terminal for supplying a first input logic signal, the second electrode being connected to a terminal for supplying a second input logic signal, complementary to the first input logic signal, the third electrode being connected to a terminal for supplying a first output logic signal, and the fourth electrode being connected to a terminal for supplying a second output logic signal, complementary to the first output logic signal.

Abstract: The monitoring device is configured for monitoring a converter comprising a first and a second input terminals, two output terminals, a first filter branch connected between the input terminals, a second filter branch connected in parallel with the first branch, two switching branches connected in parallel with the second branch, each switching branch including two switching half-branches connected in series and in an intermediate point forming an output terminal. The monitoring device comprises a detection impedance configured for being connected between the first and the second branches, and a detection module configured for comparing the voltage across the detection impedance with a predefined threshold, then for generating a detection signal as soon as said voltage is greater than said threshold.

Abstract: The invention relates to a method and device for diagnosing the operation of a photovoltaic module string. The method involves acquiring a series of current and voltage measurements forming a current versus voltage curve, known as the I(V) curve, and the steps of: transforming (46) into polar coordinates, each pair of current and voltage values of the I(V) curve, calculating (48-54) parameters of a first electrical model and second electrical model each approximating said I(V) curve, as well as a first cost representative of a deviation between said first model and said I(V) curve, and a second cost representative of a deviation between said second model and said I(V) curve, using a distance metric in the polar coordinate space, selecting (56) an electrical estimation model for estimating the I(V) curve and diagnosing (58) operation based on this selected electrical estimation model.

Abstract: A method is for depositing a thin tungsten and/or molybdenum sulfide film on a substrate chemically, under vacuum.

Abstract: Method for diagnosing and predicting the lifespan of lead-based batteries, especially lead-based batteries intended to store standby power. The invention essentially consists in a new method for diagnosing lead-acid batteries and advantageously for estimating their remaining lifespans, the batteries more particularly being intended for standby storage applications. The method is based on a combination of continuous monitoring measurements with integration of the over-charging current (computation of the over-charging Ah applied to the battery from its installation) and of periodic measurements under DC current of the internal resistance of the battery using short discharging periods with a constant current or a constant power.

Abstract: An optoelectronic device including a crystalline semiconductor layer based on GeSn and including a pin junction. This formed semiconductor layer includes a base portion; a single-crystal intermediate portion having an average value xpi1 of proportion of tin less than xps1, thus forming a barrier region against charge carriers flowing in an upper portion; and the single-crystal upper portion including a homogeneous medium with a proportion of tin xps1, and vertical structures having an average value xps2 of proportion of tin greater than xps1, thus forming regions for emitting or for receiving infrared radiation.

Abstract: An elementary cell for a two-dimensional array of quantum dots, said elementary cell extending along a main plane and including: a plurality of sites occupied by quantum dots capable of confining at least one spin qubit and including at least: a first quantum dot, a second quantum dot adjacent to the first quantum dot in a first direction of the main plane, and a third quantum dot adjacent to the first quantum dot in a second direction of the main plane; and a first blocking site adjacent to the second and third quantum dots, towards which a spin qubit cannot be displaced.

Abstract: The invention concerns an electronic device for controlling a converter from an input voltage to at least one output voltage, comprising a first bridge comprising two first switching branches, each between two terminals of the input voltage and comprising two first switches connected at a first midpoint; at least one second bridge comprising two second switching branches, each between two terminals of the output voltage and comprising two second switches connected at a second midpoint; at least one pair of first and second piezoelectric assemblies, each connected between respective first and second midpoints, distinct from one piezoelectric assembly to the other. The control device commands, during a respective resonance cycle of the piezoelectric assemblies, a switching of each of the switches to alternate phases at substantially constant voltage across the piezoelectric assemblies and phases at substantially constant load across said piezoelectric assemblies.

Abstract: This electrical energy converter comprises: a first bridge comprising at least a first switching branch between two terminals of an input voltage and including two first switches connected at a first midpoint; a second bridge comprising at least a second switching branch between two terminals of an output voltage and including two second switches connected at a second midpoint; at least one piezoelectric assembly connected between respective first and second midpoints; and at least one switching aid circuit connected to a respective midpoint and configured to, via the flow of a previously received current, discharge a parasitic capacitance of a switch of the bridge to which it is connected, and respectively charge a parasitic capacitance of another switch of said bridge.

Abstract: An X-ray imaging device, including: a transfer substrate including electric connection elements; an array of pixels, each including a monolithic elementary chip bonded and electrically connected to elements of electric connection of the transfer substrate, and a photodiode formed on the transfer substrate and electrically connected to the elementary chip; and a scintillator coating the pixel array, wherein, in each pixel, the elementary chip includes an integrated circuit for reading from the pixel photodiode.

Abstract: An X-ray imaging device, including: a transfer substrate including electric connection elements; an array of pixels, each including a monolithic elementary chip bonded and electrically connected to elements of electric connection of the transfer substrate, and a direct conversion X photon detector electrically connected to the elementary chip, wherein, in each pixel, the elementary chip includes an integrated circuit for reading from the detector of the pixel.

Abstract: A converter of an input voltage into at least one output voltage, including a pair of first and second piezoelectric assemblies; a first bridge including two first switching branches each having at least one first switch; a second bridge including two second switching branches each having at least one second switch; each piezoelectric assembly including a first end connected to the first bridge and a second end connected to the second bridge; each first switch being connected between a terminal of the input voltage and a first end; each second switch being connected between a terminal of the output voltage and a second end.