Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Centre National De La Recherche Scientifique

Commissariat a L'energie Atomique

Institut Polytechnique De Grenoble

Stmicroelectronics S.a.

Université Joseph Fourier

Université Brest Bretagne Occidentale

Université Grenoble I Joseph Fourier

Bernard Viala

Orphée Cugat

Gor Lebedev

Jérome Delamare

Laurent Duraffourg

Philippe Andreucci

Christophe Delaveaud

Jerome Delamare

Jean-Philippe Michel

Bernard Dieny

Guillaume Bouche

Pascal Ancey

Sebastien Hentz

Evangeline Benevent

Kévin Garello

Helene Takacs

Bastien Orlando

Lise Bilhaut

Juvenal Alarcon Ramos

François Grange

Marie-Claire Cyrille

Bertrand Delaet

Christophe Dubarry

Sébastien Hentz

Robert Cuchet

Olivier Redon

Yann Lamy

Thibault Ricart

Hélène Joisten

Rachid Hida

Dirk Ettelt

Herve Achard

Jean-Herve Tortai

Maxime Rousseau

Marcel Audoin

Lauric Garbuio

Leticia Gimeno Monge

Smaali Rafik

Patrick Queffelec

Sandrine Couderc

Thomas Lafont

Anne-Sophie Royet

Dmitry Zakharov

Jean-Hervé Tortai

Hélène Takacs

Hervé Achard

M Kévin Garello

M Christophe Dubarry

Christophe Delaveaux

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.

Electromagnetic material and inductance for low temperatures

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.

Method for manufacturing a composite material comprising a polymer and nanomaterials

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 nanocompositeincluding magnetic alloy nanoparticlesat least partially includes a soft magnetic alloy, an insulating matrix, and insulating nanoparticles, the nanoparticles being supported in the matrix and the soft magnetic alloy nanoparticles being encapsulated by insulating nanoparticles.

Nanocomposite and method of producing same

Method for manufacturing nanoparticles comprising a metallic core coated with a layer of polymer material comprising the following steps:

Method for manufacturing metal/polymer hybrid nanoparticles with narrow size distribution by miniemulsion polymerisation

Method for producing an integrated magnetic device with variable inductance, comprising:

Integrated magnetic device with variable inductance and method for making such a device

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.

Integrated circuit comprising a variable inductor

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.

Converter for converting energy to be recovered and electricity generator

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.

Converter for converting a variation in energy to be recovered into a potential difference

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.

Process for the manufacture of a component comprising a stack of a functional layer on a composite film

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.

Electricity generator

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.

Energy harvester

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.

Radio-frequency identification tag

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.

Radio tag

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:

Process for the transfer of at least a portion of a composite film onto a flexible polymer membrane

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.

Growing community of inventors

Sassenage, France

Bernard Viala