Abstract: A vibration sensor for measuring a vital periodic signal from an individual comprises: —a stack of layers including an active layer made of piezoelectric material and two contact electrodes arranged on the active layer, the active layer having a thickness less than or equal to 20 microns and a Young's modulus greater than or equal to 60 GPa; —a flexible support layer including a printed circuit comprising two electrical terminals; and—an electrical connection layer arranged between the stack and the support layer for connecting each electrode to a terminal.

Abstract: A device and a method for locking and/or unlocking a motor vehicle opening panel and vehicle having the device. The device includes a detection wall having an inner side and an opposite outer side, the outer side forming a contact detection region, and a detection component arranged against the inner side for detecting contact between a user's finger or hand and the outer side. The detection component includes a sensor having a layer of a piezoelectric material which has surface undulations in the form of ridges. The layer of piezoelectric material is configured to detect predetermined contact on the outer side with a view to controlling the locking or unlocking of the opening panel.

Abstract: A composite structure, intended for a planar co-integration of electronic components of different functions, the composite structure including from its base towards its surface: a support substrate made of a first material, the support substrate including cavities each opening into an upper face of the support substrate, the cavities being filled with at least one composite material consisting of a matrix of a crosslinked preceramic polymer, the matrix being charged with inorganic particles; and a thin film made of a second material, the thin film being bonded to the upper face of the support substrate and to the composite material.

Abstract: A functionalized object includes at least one mechanical wave sensor providing the object with a vibration and deformation detection capability. The mechanical wave sensor comprises: a sensitive cell having a thickness less than or equal to 50 microns, and comprising an active layer made of a monocrystalline or polycrystalline piezoelectric material and two electrodes, which are in contact with the active layer and accessible at a first surface of the sensitive cell, and a support layer secured to the second surface of the sensitive cell and secured to the object. The functionalized object comprises at least two electrically conductive strips disposed on the first surface of the sensitive cell and on a surface of the object, each strip connecting an electrode to an electrical contact pad. A method is used for producing such a functionalized object.

Abstract: A method for producing an adjustable bulk acoustic wave resonator comprising a transducer stack (E1) and a tuning stack (E2). According to the invention, transducer stack (E1) includes two defined electrodes (4, 6) and piezoelectric material (2), and stack (E2) includes a layer of piezoelectric material (8) and two defined electrodes (10, 12). The method includes: a) production of the transducer stack; b) formation of an electrically insulating layer on an electrode (6) of the transducer stack; c) formation of a defined electrode (10) of the tuning stack on the electrically insulting layer such that it is aligned with the electrodes of the transducer stack; d) assembly, on the electrode (10), of a substrate of piezoelectric material; e) fracturing of the substrate of piezoelectric material; and f) formation of the other defined electrode (12) of the tuning stack, aligned with the defined electrode (10).

Abstract: A device and a method for locking and/or unlocking a motor vehicle opening panel and vehicle having the device. The device includes a detection wall having an inner side and an opposite outer side, the outer side forming a contact detection region, and a detection component arranged against the inner side for detecting contact between a user's finger or hand and the outer side. The detection component includes a sensor having a layer of a piezoelectric material which has surface undulations in the form of ridges. The layer of piezoelectric material is configured to detect predetermined contact on the outer side with a view to controlling the locking or unlocking of the opening panel.

Abstract: A composite structure, intended for a planar co-integration of electronic components of different functions, the composite structure including from its base towards its surface: a support substrate made of a first material, the support substrate including cavities each opening into an upper face of the support substrate, the cavities being filled with at least one composite material consisting of a matrix of a crosslinked preceramic polymer, the matrix being charged with inorganic particles; and a thin film made of a second material, the thin film being bonded to the upper face of the support substrate and to the composite material.

Abstract: A method for sealing cavities using membranes, the method including a) forming cavities arranged in a matrix, of a depth p, a characteristic dimension a, and spaced apart by a spacing b; and b) forming membranes, sealing the cavities, by transferring a sealing film. The method further includes a step a1), executed before step b), of forming a first contour on the front face and/or on the sealing face, the first contour comprising a first trench having a width L and a first depth p1, the formation of the first contour being executed such that after step b) the cavities are circumscribed by the first contour, said first contour being at a distance G from the cavities between one-fifth of b and five b.

Abstract: A touch surface device, comprising at least: an element comprising a first face forming the touch surface and a second face opposite to the first face; an acoustic wave sensor including at least one portion of piezoelectric material disposed between two electrodes, the portion of piezoelectric material and both electrodes being structured by forming surface wavinesses as wrinkles, the sensor being secured to the second face of the element such that apexes or valleys of the wrinkles are in contact with the second face of the element; an electronic circuit coupled to the electrodes of the sensor and configured to identify, from an electric signal intended to be outputted from the electrodes of the sensor, at least one touch gesture made on the touch surface.

Abstract: A process for transferring a useful layer to a carrier substrate including a first surface is provided, the process including the steps of: providing a donor substrate including a first surface, a weakened zone including implanted species, the useful layer, which is bounded by the weakened zone and by the first surface of the donor substrate, and an amorphous zone disposed, in the useful layer, parallel to the weakened zone; assembling, on a side of the first surface of the donor substrate and on a side of the first surface of the carrier substrate, the donor substrate with the carrier substrate by bonding, such that the amorphous zone is at least partially facing at least one cavity that is partially bounded by the first surface of the donor substrate; and splitting the donor substrate along the weakened zone so as to reveal the useful layer.

Abstract: A method for transferring, from a donor substrate to a carrier substrate, a thin layer having a first coefficient of thermal expansion. This method comprises: —forming an embrittlement plane in the donor substrate; —forming an electrically insulating layer on the surface of the donor substrate and/or of the carrier substrate; —producing an assembly by placing the donor substrate and the carrier substrate in contact with one another via the insulating layer; —separating the assembly by fracturing along the embrittlement plane.

Abstract: A method of manufacturing electronic devices, including the successive steps of: a) growing, on a surface of a first substrate, a stack including at least one semiconductor layer; b) bonding a second substrate on a surface of the stack opposite to the first substrate, and then removing the first substrate; c) bonding a third substrate to a surface of the stack opposite to the second substrate, and then removing the second substrate; d) cutting the assembly including the third substrate and the stack into a plurality of first chips each including a portion of the stack; and e) bonding each first chip, by its surface opposite to the third substrate, to a surface of a fourth semiconductor substrate inside and on top of which a plurality of integrated control circuits have been previously formed.

Abstract: A semiconductor on insulator type substrate, comprising at least: a support layer; a semiconductor surface layer; a buried dielectric layer located between the support layer and the semiconductor surface layer; a trap rich layer located between the buried dielectric layer and the support layer, and comprising at least one polycrystalline semiconductor material and/or a phase change material; in which the trap rich layer comprises at least one first region and at least one second region adjacent to each other in the plane of the trap rich layer, the material of the at least one first region being in an at least partially recrystallized state and having an electrical resistivity less than that of the material in the at least one second region.

Abstract: A transfer method includes steps of a) supplying a support layer having a first face, structures being assembled by their front face on the first face, and c) transferring the structures onto a host face of a host substrate. The support layer includes folding regions, between the structures, adapted to pass from a folded state to an unfolded state under the action of an external excitation. Between steps a) and c), a step b) is included of executing the external action in such a way as to make the folding regions pass from the folded state to the unfolded state such that the spacing between the structures varies.

Abstract: Fabrication of a circuit with superposed transistors includes assembly of a structure having transistors formed from a first semiconducting layer with a support provided with a second semiconducting layer in which transistors are provided on a higher level. The second semiconducting layer is coated with a thin layer of silicon oxide. The assembly of said structure and the support is made by direct bonding in which the thin silicon oxide layer is bonded to oxidised portions of getter material.

Abstract: A method for transferring, from a donor substrate to a carrier substrate, a thin layer having a first coefficient of thermal expansion. This method comprises: —forming an embrittlement plane in the donor substrate; —forming an electrically insulating layer on the surface of the donor substrate and/or of the carrier substrate; —producing an assembly by placing the donor substrate and the carrier substrate in contact with one another via the insulating layer; —separating the assembly by fracturing along the embrittlement plane.

Abstract: A method for producing an adjustable bulk acoustic wave resonator comprising a transducer stack (E1) and a tuning stack (E2). According to the invention, transducer stack (E1) includes two defined electrodes (4, 6) and piezoelectric material (2), and stack (E2) includes a layer of piezoelectric material (8) and two defined electrodes (10, 12). The method includes: a) production of the transducer stack; b) formation of an electrically insulating layer on an electrode (6) of the transducer stack; c) formation of a defined electrode (10) of the tuning stack on the electrically insulting layer such that it is aligned with the electrodes of the transducer stack; d) assembly, on the electrode (10), of a substrate of piezoelectric material; e) fracturing of the substrate of piezoelectric material; and f) formation of the other defined electrode (12) of the tuning stack, aligned with the defined electrode (10).

Abstract: A method of manufacturing electronic devices, including the successive steps of: a) growing, on a surface of a first substrate, a stack including at least one semiconductor layer; b) bonding a second substrate on a surface of the stack opposite to the first substrate, and then removing the first substrate; c) bonding a third substrate to a surface of the stack opposite to the second substrate, and then removing the second substrate; d) cutting the assembly including the third substrate and the stack into a plurality of first chips each including a portion of the stack; and e) bonding each first chip, by its surface opposite to the third substrate, to a surface of a fourth semiconductor substrate inside and on top of which a plurality of integrated control circuits have been previously formed.

Abstract: The invention relates to a method for transferring structures on a host substrate, the method comprising the following steps in sequence: a) supply a temporary substrate comprising two main faces, the temporary substrate being stretchable, the structures being assembled with their front face on the first face; b) stretch the temporary substrate along at least one direction so as to increase the space between the structures along at least one direction, c) a step for transferring the plurality of structures on a host face of a host substrate, The temporary substrate comprises a matrix made of a stretchable material, and a plurality of inserts on which the structures are assembled, the inserts comprising a material with a Young's Modulus higher than that of the stretchable material.

Abstract: A touch surface device, comprising at least: an element comprising a first face forming the touch surface and a second face opposite to the first face; an acoustic wave sensor including at least one portion of piezoelectric material disposed between two electrodes, the portion of piezoelectric material and both electrodes being structured by forming surface wavinesses as wrinkles, the sensor being secured to the second face of the element such that apexes or valleys of the wrinkles are in contact with the second face of the element; an electronic circuit coupled to the electrodes of the sensor and configured to identify, from an electric signal intended to be outputted from the electrodes of the sensor, at least one touch gesture made on the touch surface.