Abstract: Disclosed is a method for fabricating coils including the steps of providing a liquid droplet having a diameter on length-scales ranging from hundreds of micrometers to nanometers and bringing a fiber into contact with the liquid droplet, wherein the radius of the liquid droplet is sufficiently high in comparison to the bending elastocapillary length which is defined as where E is the Young's modulus of the elastic fiber, r is the radius of the fiber and ? is the interfacial tension between the droplet and surrounding medium, so that capillary forces induce the spontaneous winding of the fiber around the droplet, to fabricate a coil with a diameter in the range from hundreds of micrometers to nanometers. Also disclosed is a system for making microcoils and to the product thereof.

Abstract: An acousto-optic imaging method in which light waves and unfocused acoustic waves having various directions of propagation m are emitted in a medium, by spatially modulating the amplitude of the ultrasonic transducers of an array of transducers according to several periodic spatial amplitude modulations j, and the resulting optical signal Smj(t) is captured. For each direction of propagation m, the signals Smj(t) are spatially demodulated in order to determine a signal Sm(t) used to reconstruct the image of the medium.

Abstract: Methods and systems are provided for decoding movement intentions using functional ultrasound (fUS) imaging of the brain. In one example, decoding movement intentions include determining a memory phase of a cognitive state of the brain, the memory phase between a gaze fixation phase and movement execution phase, and determining one or more movement intentions including one or more of intended effector (e.g., hand, eye) and intended direction (e.g., right, left) according to a machine learning algorithm trained to classify one or more movement intentions simultaneously.

Abstract: According to one aspect, the invention relates to a system (101) for in vivo, full-field interference microscopy imaging of a scattering three-dimensional sample.

Abstract: The present invention relates to a method for the non-invasive optical characterization of a heterogeneous medium, comprising: a step of illuminating, by means of a series of incident light waves, a given field of view of the heterogeneous medium, positioned in a focal plane of a microscope objective (30); a step of determining a first distortion matrix (Dur, Drr) in an observation basis defined between a conjugate plane of the focal plane (FP) and an observation plane, said first distortion matrix corresponding, in a correction basis defined between a conjugate plane of the focal plane and an aberration correction plane, to the term-by-term matrix product of a first reflection matrix (Rur) of the field of view, determined in the correction basis, with the phase conjugate matrix of a reference reflection matrix, defined for a model medium, in said correction basis; and a step of determining, from the first distortion matrix, at least one mapping of a physical parameter of the heterogeneous medium.

Abstract: The invention concerns a method for calibrating a system for real-time measurement of the activity of a cognitive function of a test subject, the method comprising the successive steps of: acquiring electrical signals representative of a neural activity of a test subject; calculating values of markers of the cognitive function activity; generating a plurality of copies of calculated values of markers and adding noise to the generated copies; and, constructing a classifier by machine learning, based on the calculated marker values and noisy copies, the classifier being suitable for measuring the activity of the cognitive function of the test subject by calculating a probability that an electrical signal representative of the neural activity of the test subject results from a predetermined activity state of the cognitive function of the test subject.

Abstract: According to a first aspect, the present disclosure relates to a digital holography device (100) for full-field blood flow imaging of ocular vessels of a field of view of a layer (11) of the eye (10). The device comprises an optical source (101) configured for the generation of an illuminating beam (Eobj) and a reference beam (ELO), and a detector (135) configured to acquire a plurality of interferograms (I(x,y,t)) wherein an interferogram is defined as the signal resulting from the interference between the said reference beam (ELO) and a part of said illuminating beam (Eobj) that is backscattered from said layer (11).

Abstract: An antenna assembly, comprising: a single substrate having a lower surface and an upper surface; an isotropic source of spherical electromagnetic waves configured for emitting surfaces waves on the upper surface; a ground plane formed on the lower surface comprising a metallic deposit on the entire lower surface; an antenna element formed on the upper surface comprising a periodic patterns metasurface formed on the substrate by a texture of subwavelength patches, the antenna element comprising: a first-scale metasurface defined by a two-dimensional alternation of metal or metamaterial patches having closely spaced vertices in each contiguous element to form small gaps; a plurality of switches disposed in the gap between the vertexes of the patches, each switch permitting to connect several patches through the vertexes for defining a second-scale metasurface having a pattern thus forming the antenna element; wherein each patch has dimensions which do not depend on the frequency of the waves to be radiated,

Abstract: A body part for a motorized land vehicle is provided. The body part includes at least one wall made of a plastic material and including at least one housing forming a cavity for electromagnetic waves, said housing includes: at least one transceiver for transmitting and/or receiving an electromagnetic wave in said housing ; at least one adaptable surface capable of reflecting the electromagnetic wave transmitted by the transceiver in a given direction (in a controlled manner) and, conversely, capable of reflecting the electromagnetic wave coming from the exterior of the housing toward the transceiver.

Abstract: Organic solid three-dimensional polymeric foams, a process for preparing the same, and use thereof, the foams includes a solid continuous phase and pores, wherein the foams have a pore size ranging from 50 nm to 200 ?m and a volumetric fraction of the solid continuous phase is from 0.1 to 60%, with respect to the total volume of the foams, and a polydispersity index from 1 to 30%, the foams being ordered over a volume of at least 100 pores.

Abstract: The invention concerns a detecting apparatus (12) for imaging at least two areas of a brain of a subject (10), the detecting apparatus (12) comprising: —a holder comprising: —a frame (14) devoted to be cemented on the skull of the subject (10), the frame (14) delimitating an inner portion (18) which is transparent to ultrasound waves, —a removable imaging device comprising: —a platform (16) delimitating an inner space (28), the inner space (28) facing the inner portion (18), —a fixing element (30) adapted to temporary fix and lock the platform (16) to the holder, —an ultrasound probe (32), and —a moving stage (34) holding the ultrasound probe (32) and being adapted to move the ultrasound probe (32) within the inner space (28).

Abstract: The invention relates to a silicone composition comprising (a) crosslinked polymers comprising consecutive —Si—O— units containing exchangeable pendant bonds and exchangeable crosslinking points, that are exchangeable by aldehyde-imine exchange reactions and/or by imine-imine exchange reactions and/or by imine-primary amine exchange reactions, obtained by crosslinking linear or branched polymers comprising consecutive —Si—O— units and (b) monofunctional free aldehydes and/or monofunctional free imines and/or monofunctional free primary amines.

Abstract: The present invention concerns a method for obtaining a functional parameter of a muscle having a part, the method comprising the steps of: a) applying ultrasound waves to the muscle, b) collecting the ultrasound waves retrodiffused by the muscle at a plurality of times, to obtain collected ultrasound waves, c) determining a first plurality of values representative of stiffness values of one part at a first plurality of times by using the collected ultrasound waves, d) determining a second plurality of values representative of deformation values of said part at a second plurality of times by using the collected ultrasound waves, and e) deducing at least one functional parameter based on the first plurality of values and the second plurality of values. The invention also concerns a corresponding device.

Abstract: A comb copolymer A2 including at least two boronic ester functions, the copolymer including a main chain and side chains, and at least one portion of the side chains of the copolymer A2 made of oligomers. Also, a composition resulting from mixing at least one polydiol compound A1 and a copolymer A2. The compositions exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. Also, a lubricant composition including such a mixture and at least one lubricating oil. Also, use of this composition to lubricate a mechanical part.

Abstract: Compositions resulting from the mixing of at least: a comb polydiol copolymer A1 and a compound A2 including at least two boronic ester functional groups, the comb polydiol copolymer A1 including a main chain and side chains, at least a portion of the side chains of the copolymer A1 being composed of oligomers. They exhibit very varied rheological properties depending on the proportion of the compounds A1 and A2 used. Composition resulting from the mixing of at least one lubricating oil with such a composition of associative and exchangeable polymers and use of this composition for lubricating a mechanical part.

Abstract: The invention relates to a method for characterising bone, the method comprising the steps of receiving (102) ultrasonic wave echo signals transmitted into a body, determining (104) a speed of sound in the body's non-bone biological tissue, locating (106) a first demarcation curve between non-bone biological tissue and bone in an image of the body constructed during said determining step, and determining (108) a speed of sound in bone. The steps of determining speed include constructing images from the signals, and a metric calculation indicative of a focus quality in the constructed images.

Abstract: A waveform shaping device that includes an adaptable surface, a controller, and a receiving device which measures a secondary wave following the reception of a primary wave by a receiver, the primary wave having been transmitted by a transmitter. Based on the measurement of the secondary wave, the controller determines an estimated value for optimization of the adaptable surface, without any connection to the receiver.

Abstract: Method and system for measuring a physical parameter of a target region of a medium are provided, wherein: an excitation wave having a periodic modulation over time of a physical characteristic is emitted, a return wave is periodically deflected with a controllable deflecting element so that the deflected wave scans a transducer array, each transducer being associated with a predefined phase range of the periodic modulation, a phase image is recorded during at least one period of the periodic modulation, a phase shift between a periodic modulation of the return wave and the periodic modulation of the excitation wave is determined from the phase image, a physical parameter of the target region is determined from the phase shift.

Abstract: The invention relates to functionalised dioxaborolane or dioxaborinane derivatives of formula (I), wherein R1 is covalently bonded to the boron atom by a carbon atom; one of R2, R3, R?3 or R4 is a radical of formula —X; or one of R1, R2, R3, R?3 or R4 is a radical of formula —X; and X is a functionalised radical. The invention relates to the method for preparing same and the uses thereof.

Abstract: According to one aspect, the invention concerns an optical imaging device (20) for an object (OBJ) by off-axis holography comprising a light source (21) adapted for emitting an illumination wave (EI) on the object, in transmission or reflection, and an assembly formed by one or more thick Bragg gratings (22) for receiving a wave (EO) coming from the object thus illuminated and for deflecting a first component (ER) of the wave coming from the object, called the reference wave, and to allow a second component (ES) of the wave coming from the object, called the signal wave, to pass without deflection in such a way that the deflected reference wave presents predetermined deflection angles with respect to the non-deflected signal wave defined in two perpendicular planes.