Abstract: Microelectronics and the manufacture of microelectronic components for an integrated circuit operating at a high frequency are disclosed. Production of micro-inductors having a high induction density and high quality factor, in particular at a usage frequency greater than 1 GHz, or even greater than 5 GHz, is disclosed. A nanocomposite 1 including magnetic alloy nanoparticles 10 at least partially includes a soft magnetic alloy, an insulating matrix 20, and insulating nanoparticles 30, the nanoparticles being supported in the matrix and the soft magnetic alloy nanoparticles being encapsulated by insulating nanoparticles.

Abstract: A method for depositing a layer of a nanocomposite material comprising the step of pouring said liquid material onto the surface of a substrate, said substrate being subjected to an oscillating rotary motion.

Abstract: Method for manufacturing a composite material comprising a polymer and nanomaterials, the method comprising the following steps: dissolution of the polymer in a first solvent, whereby a first solution is obtained, dispersion of the nanomaterials in a second solvent, different from the first solvent, whereby a second solution is obtained, mixing of the two solutions, whereby a third solution is obtained, heating of the third solution so as to evaporate the second solvent, whereby a final solution is obtained, deposition of the final solution on a substrate and evaporation of the first solvent, the second solvent having a boiling point lower by at least 30° C. than that of the first solvent, and the viscosity of the final solution being equal to some 10% of the viscosity of the first solution.

Abstract: An electromagnetic material for an inductance for operation at cryogenic temperatures including, in an electrically insulating matrix, metal nanoparticles with superparamagnetic behavior of size less than or equal to 30 nm and having a magnetic permeability greater than or equal to 1.5 for a frequency between 5 GHz and 50 GHz.

Abstract: Method for manufacturing nanoparticles comprising a metallic core coated with a layer of polymer material comprising the following steps: a) preparing a water-in-oil emulsion comprising droplets of an aqueous phase, dispersed in an organic phase, b) adding nanoparticles comprising a metallic core coated with a shell of carbonaceous material, whereby nanoparticles trapped in the droplets are obtained, c) adding precursor monomers of the polymer material, and d) adding a polymerisation initiator, adding the precursor monomers and the polymerisation initiator resulting in polymerisation of the monomers, whereby nanoparticles coated with a layer of polymer material dispersed in the organic phase are obtained.

Abstract: Method for producing an integrated magnetic device with variable inductance, comprising: a) making of a piezoelectric element on a first substrate; b) making of a first electrically conductive element on a face of the piezoelectric element, and fastening of the ends of the piezoelectric element to a second substrate such that the piezoelectric element is arranged facing a cavity formed between the second substrate and the piezoelectric element, the first electrically conductive element being arranged in and/or against the second substrate or against the piezoelectric element; c) removing of the first substrate; d) making of a second electrically conductive element on another face of the piezoelectric element; and further comprising the making of an electrical and/or magnetic coupling of the first and second electrically conductive elements, and the making of a magnetic element arranged against and/or in the piezoelectric element and between the electrically conductive elements.

Abstract: This integrated circuit comprises an inductor formed by at least a first coil and a second coil which are magnetically coupled together. Each of the first and second coils comprises a metal line which extends continuously, in a plane, between a first end and second end, said metal line following a winding path around an axis of the coil parallel to the plane, this metal line comprising for this purpose a succession of sections which each intersect the axis of the coil, and the sections of this succession are electrically connected in series with each other.

Abstract: Method for manufacturing nanoparticles comprising a metallic core coated with a layer of polymer material comprising the following steps: a) preparing a water-in-oil emulsion comprising droplets of an aqueous phase, dispersed in an organic phase, b) adding nanoparticles comprising a metallic core coated with a shell of carbonaceous material, whereby nanoparticles trapped in the droplets are obtained, c) adding precursor monomers of the polymer material, and d) adding a polymerisation initiator, adding the precursor monomers and the polymerisation initiator resulting in polymerisation of the monomers, whereby nanoparticles coated with a layer of polymer material dispersed in the organic phase are obtained.

Abstract: Metal-polymer capacitor comprising a dielectric film disposed between a first electrode and a second electrode, characterised in that the dielectric film comprises: core/shell structure nanoparticles, the core of the nanoparticles being metallic and the shell comprising a first layer made of an inorganic carbonaceous material and a second layer made of a first polymer material, the nanoparticles having a narrow size distribution, a matrix wherein the nanoparticles are dispersed, the matrix being a mineral matrix or a matrix made of a second polymer material.

Abstract: This integrated circuit comprises an inductor formed by at least a first coil and a second coil which are magnetically coupled together. Each of the first and second coils comprises a metal line which extends continuously, in a plane, between a first end and second end, said metal line following a winding path around an axis of the coil parallel to the plane, this metal line comprising for this purpose a succession of sections which each intersect the axis of the coil, and the sections of this succession are electrically connected in series with each other.

Abstract: A converter including a transducer layer which moves anchoring points to deform a piezoelectric diaphragm by bending. The converter includes a rigid arm between each anchoring point and a point for securing to the piezoelectric diaphragm to which it is attached, the rigid arm being tensioned between the anchoring point and the securing point and configured to transform movement of the anchoring points into a movement that deforms the piezoelectric diaphragm between bent and less bent positions. The securing point is located at the mid-point when the ends of the piezoelectric diaphragm are secured, with no degree of freedom, in a frame, and the securing point is located at one end of the piezoelectric diaphragm when the mid-point is secured, with no degree of freedom, in the frame.

Abstract: A converter including a first transducer that can lengthen inside at least a first deformation zone and simultaneously shrink inside at least a different second deformation zone. Inner faces of second and third electromechanical transducers are secured respectively, with no degree of freedom, substantially to the first and second deformation zones of the layer of the first transducer. The third transducer differs from the second transducer by the polarization of its layer of piezoelectric material in a different direction to polarization of the layer of piezoelectric material of the second transducer and/or by existence of a separation that mechanically and electrically insulates a first electrode of the third transducer from a first electrode of the second transducer located on a same side of the layer of piezoelectric material.

Abstract: Method for producing an integrated magnetic device with variable inductance, comprising: a) making of a piezoelectric element on a first substrate; b) making of a first electrically conductive element on a face of the piezoelectric element, and fastening of the ends of the piezoelectric element to a second substrate such that the piezoelectric element is arranged facing a cavity formed between the second substrate and the piezoelectric element, the first electrically conductive element being arranged in and/or against the second substrate or against the piezoelectric element; c) removing of the first substrate; d) making of a second electrically conductive element on another face of the piezoelectric element; and further comprising the making of an electrical and/or magnetic coupling of the first and second electrically conductive elements, and the making of a magnetic element arranged against and/or in the piezoelectric element and between the electrically conductive elements.

Abstract: A process of manufacturing component with a composite film including a matrix made of thermoplastic polymer and particles inside this matrix. This process includes heating the composite film in order for its temperature to exceed the glass transition temperature of its matrix, then when the composite film is softened, flattening an external face of the composite film by a smooth face resting directly over the whole of this external face, this smooth face forming part of the front face of a flexible membrane, the whole of the rear face of which, located on the side opposite the front face, is pushed against the composite film by a fluid, then cooling the composite film below the glass transition temperature, then withdrawing the membrane in order to mechanically separate its front face from the external face of the composite film.

Abstract: An electricity generator including a first converter suitable for converting a variation of an energy to be harvested into a corresponding excess of electrical charges. The generator includes a circuit for collecting the excess of electrical charges, the circuit has a first controllable mechanical switch, and a control device for the first switch designed to control the switching of the switch to its closed position when the excess of electrical charges exceeds a first predetermined threshold. The switch is a magnetic switch and the control device comprises a variable magnetic field source which controls the switching of the first switch to its closed position only at the time when the excess of electrical charges exceeds the first predetermined threshold.

Abstract: An energy harvester includes a circuit for collecting an excess of electrical charges on a first connection terminal, wherein the circuit is equipped with a first controllable mechanical switch, and a control device for the first switch. There is a transducer suitable for directly transforming, without consuming the excess of electrical charges present on the first connection terminal, the variation of the energy to be harvested into a mechanical deformation which displaces the first switch from its open position to its closed position.

Abstract: Microelectronics and the manufacture of microelectronic components for an integrated circuit operating at a high frequency are disclosed. Production of micro-inductors having a high induction density and high quality factor, in particular at a usage frequency greater than 1 GHz, or even greater than 5 GHz, is disclosed. A nanocomposite 1 including magnetic alloy nanoparticles 10 at least partially includes a soft magnetic alloy, an insulating matrix 20, and insulating nanoparticles 30, the nanoparticles being supported in the matrix and the soft magnetic alloy nanoparticles being encapsulated by insulating nanoparticles.

Abstract: A radio-frequency identification tag that includes a ground plane made of an electrically conductive material, and an actuator made of a transducer material adapted to convert a variation of a physical quantity into a mechanical displacement of the ground plane between first and second positions when the physical quantity crosses a predetermined threshold in order to indicate this event to the reader. The transducer material is a thermal shape-memory material or a magnetostrictive material or a magnetic shape-memory material. The transducer material is also an electrically conductive material. The ground plane and the actuator are both formed by a single strip made of the transducer material and a mobile portion of which moves relative to an antenna between the first and second positions when the physical variable crosses the predetermined threshold.

Abstract: A radio tag capable of indicating to a reader, via a wireless link, that a variation in energy has crossed a predetermined threshold, this variation in energy being chosen from the group made up of a variation in the temperature of the radio tag and a variation in the magnetic field in which the radio tag is immersed. This radio tag includes transducer material chosen from a group made up of a thermal shape-memory material, a magnetostrictive material and a magnetic shape-memory material. This transducer material is deposited and affixed without any degree of freedom onto a substrate or an antenna of the radio tag to form, with the substrate or the antenna, a multilayer structure which flexurally deforms the antenna between a bent conformation and a less bent conformation when the energy variation crosses the predetermined threshold.

Abstract: Process for the transfer of a composite film onto a flexible polymer membrane in which the composite film comprises a matrix made of thermoplastic polymer and particles. This process comprises the following operations: 1) the movement of the membrane into a position in which it closes up, in a way leaktight to a fluid, an opening of a reservoir and a first zone of its front face is directly in contact on an external face of the composite film, 2) the heating of the composite film, so as to soften it, then 3) when the composite film is softened, a fluid inside the reservoir uniformly compresses the first zone against the external face of the composite film in order to adhesively bond this first zone to this external face, then 4) the movement of the membrane to a retracted position in order to separate, from the rigid substrate, the portion of the composite film adhesively bonded to the first zone.