Abstract: The invention concerns a method for controlling at least one gas bubble produced in a localised manner in a medium (3?) allowing the movement of said at least one gas bubble, characterised in that it comprises a step consisting of generating at least one ultrasound burst towards said at least one gas bubble, said at least one burst being emitted for a burst duration at least partially covering a duration during which said gas is effectively being produced.

Abstract: An attenuation device for attenuating sound waves, and a corresponding system and method, generated by a source emitting sound waves having frequencies between f1 and f2 and wherein the pressure levels are between n1 and n2. The attenuation device comprising at least one acoustic absorber comprising at least one non-linear membrane; the attenuation device being configured in such a way that the first face of the absorber is in acoustic communication with the source. The attenuation device also comprises at least one coupling element for coupling the second face with the source, the coupling element being configured to transmit to the second face sound waves according to the sound waves emitted by the source, and of which the phase and/or the amplitude leads to a pressure differential of the sound waves arriving respectively on the first and second face at the same time.

Abstract: The invention relates to a continuous process for fractionating a suspension chosen from a microalgal biomass or milk.

Abstract: In the field of photonic and opto-electronic components, an optical filter comprises a plurality of semi-conducting nano-/microparticles, exhibiting properties of electromagnetic resonance in the optical and near-infrared domain, arranged on a plane, characterized in that it furthermore comprises a layer with electrically adjustable optical index disposed on the surface formed by said nano-/microparticles and said plane; a first electrically insulating layer disposed on said layer with electrically adjustable optical index and an electrode disposed on said first electrically insulating layer.

Abstract: The invention relates to a continuous process for fractionating a suspension chosen from a microalgal biomass or milk.

Abstract: A method for locating at least one target, in an electromagnetically absorbent environment, includes: emitting at least one electromagnetic excitation signal from a source; receiving, by an acoustic sensor, an acoustic signal from emission of the excitation signal; detecting, in the received acoustic signal, a first time of receipt of a first response to the excitation signal from an acoustic disturbance caused by electromagnetic heterogeneity of the target in the environment; estimating a first distance between the target and the acoustic sensor using the first time of receipt; detecting, in the same received acoustic signal, a second time of receipt of a second response to the excitation signal from an acoustic disturbance caused by acoustic heterogeneity of the target in the environment; estimating a second distance between the source and target using the second time of receipt; obtaining a location of the target from the first and second estimated distances.

Abstract: A method for controlling the distribution of the RF magnetic field in a magnetic resonance imaging system, having steps of: placing a cage coil in a permanent magnet supplying a permanent magnetic field along a first axis, and supplying an RF signal to the cage coil in order for the coil to generate an RF magnetic field rotating in a plane that runs perpendicular to the first axis; and putting in place an electromagnetic resonator, the resonance mode of which is excited by the rotating magnetic field, the resonator being placed in a position inside or outside the cage coil and at a distance from a region to be analyzed of an object to be placed in the cage coil, the resonance mode and the position of the resonator in relation to the volumetric antenna being suitable for adjusting the intensity of the rotating magnetic field in an area of the region to be analyzed.

Abstract: According to one aspect, the present description relates to a system for high resolution imaging of an object comprising a fiber bundle (1) comprising an array of optical fiber cores (A), said fiber bundle being adapted to receive a plurality of light beams issued from spatially incoherent point sources of an object; the system further comprises a two-dimensional detector (240) with a detection plane, located at a proximal end of the fiber bundle, adapted to receive speckle patterns, each speckle pattern resulting from the transmission of one of said light beams through at least a plurality of the fiber bundle cores, the ensemble of speckle patterns detected by the two-dimensional detector forming a multiple speckles image; and a processing unit (250) adapted to determine an image of the object from said multiple speckles image.

Abstract: A tape having a fully wound stable state and a fully unwound stable state, configured for space applications, the intermediate states between the fully wound state and the fully unwound state comprises a single continuous portion of wound tape with a first radius of curvature greater than a threshold value and a single continuous portion of unwound tape with a second radius of curvature less than the threshold value, the value of the second radius of curvature being continuous over the unwound portio; the tape comprises a stack comprising fibrous layers extending in a longitudinal direction, the resulting stack having symmetry with respect to a longitudinal plane of its fibres to compensate for torsional deformations generated by variations in temperature.

Abstract: An attenuation device for attenuating sound waves, and a corresponding system and method, generated by a source emitting sound waves having frequencies between f1 and f2 and wherein the pressure levels are between n1 and n2. The attenuation device comprising at least one acoustic absorber comprising at least one non-linear membrane; the attenuation device being configured in such a way that the first face of the absorber is in acoustic communication with the source. The attenuation device also comprises at least one coupling element for coupling the second face with the source, the coupling element being configured to transmit to the second face sound waves according to the sound waves emitted by the source, and of which the phase and/or the amplitude leads to a pressure differential of the sound waves arriving respectively on the first and second face at the same time.

Abstract: A method for locating at least one target, in an electromagnetically absorbent environment, includes: emitting at least one electromagnetic excitation signal from a source; receiving, by an acoustic sensor, an acoustic signal from emission of the excitation signal; detecting, in the received acoustic signal, a first time of receipt of a first response to the excitation signal from an acoustic disturbance caused by electromagnetic heterogeneity of the target in the environment; estimating a first distance between the target and the acoustic sensor using the first time of receipt; detecting, in the same received acoustic signal, a second time of receipt of a second response to the excitation signal from an acoustic disturbance caused by acoustic heterogeneity of the target in the environment; estimating a second distance between the source and target using the second time of receipt; obtaining a location of the target from the first and second estimated distances.