Abstract: An anti-biofouling system for attaching to a device which comprises a fouling-sensitive element and which is configured to be immersed in a liquid and at least partially cover the fouling-sensitive element. The anti-biofouling system comprises a plate which extends in a plane XY and has two opposite main faces, one of which is intended to be in contact with the liquid. The anti-biofouling system also includes at least one actuator located on one of the main faces of the plate and able to deform the plate off its plane. The plate has a nano-texture over all or part of the face intended to be in contact with the liquid. The nano-texture is formed by a plurality of elements raised with respect to a surface of the plate, each raised element having at least two dimensions of 1 nm to 1,000 nm. On at least one area of the nano-textured face the raised elements are spaced apart from one another by a distance of 1 nm to 1,000 nm.

Abstract: A system configured to be transferred to a measuring device configured to be immersed in a liquid at a pressure Pliquid and which includes a surface sensitive to biofouling; it is designed to cover the sensitive surface and includes a plate able to vibrate, having a front face and a rear face, one of which is configured to be in contact with the liquid; an actuator, located on one of the faces, able to make the plate vibrate, to limit the attachment of micro-organisms to the plate; a closed cavity, delimited at least partly by the rear face, and which is filled with a fluid at a pressure Pcavity; a fluid compressor, in fluid communication with the closed cavity, able to modulate the pressure Pcavity in the cavity, so that the difference between the pressures on the front and rear faces is less than 2 bar.

Abstract: An electromechanical device includes at least one movable mechanical structure including at least one movable mechanical element; for each movable mechanical element of each movable mechanical structure a first piezoelectric layer, the first layer being disposed on a first part of the movable element so as to be able to actuate the movable mechanical element, and a second piezoelectric layer, the second layer being disposed on a second part of the movable element, distinct from the first part, so as to be able to convert mechanical energy associated with the movement of the movable mechanical element into electric energy, the layer forming a capacitance; the device further including an electrical circuit connected to the second piezoelectric layer in parallel with the capacitance formed by the layer and including an adjustable capacitance which can assume a negative value.

Abstract: A flexible haptic interface defining a tactile surface able to be contacted by a user, the interface including a plurality of rigid tactile elements connected by a flexible support forming at least one hinge extending between at least two adjacent elements, and in contact with each element, at least one actuator, the actuators being arranged to transmit a mechanical excitation to the rigid tactile elements in order to drive in vibration the hinge situated between them with a vibration amplitude detectable by touch.

Abstract: A haptic interface of the ‘mid-air’ type, including a control circuit, a plurality of ultrasonic transducers connected to the circuit, which includes a first set of transducers emitting at a first ultrasound carrier frequency and at least a second set of transducers emitting at a second ultrasound carrier frequency different from the first; the control circuit being configured for modulating the signals sent to the transducers in order to generate, with the ultrasound waves emitted by at least a part of the transducers of the first set, an acoustic pressure detectable by touch within at least a first focal region, and generate, with the ultrasound waves emitted by at least a part of the transducers of the second set, an acoustic pressure detectable by touch within at least a second focal region.

Abstract: A phase modulator for a light beam comprising a waveguide having a longitudinal axis, and a piezoelectric actuator to apply a mechanical stress within said waveguide in response to an electrical bias, said actuator comprising a first part covering a first side of the waveguide and having a first axis of symmetry essentially parallel to the longitudinal axis. The actuator comprises a second part covering a second side of the waveguide, said second part having a second axis of symmetry essentially parallel to the longitudinal axis.

Abstract: A micrometric speaker includes a frame, an electromechanical transducer, and a mechanical-acoustic transducer comprising a rigid plate movably mounted in the frame. The electromechanical transducer comprises two piezoelectric actuators and two elastic strips. The frame comprises a central crossmember from which the two strips extend until engaging two lateral coupling edges of the mechanical-acoustic transducer, and the mechanical-acoustic transducer comprises two linearising springs each extending from one of the lateral edges to the rigid plate, to enable, during a deformation of the strips, a movement of the two lateral edges to the central crossmember and reduce the longitudinal constraints applied to the strips during their deformation due to their “recessed-guided” bending configuration.

Abstract: A method for controlling a submersible environmental sensor, the sensor including a support having a face which includes a sensitive zone configured to receive at least one species of interest (SOI), anti-fouling means configured to cause at least the sensitive zone to vibrate, and detection means for detecting a presence of the SOI on the sensitive zone, the detection means and the anti-fouling means being carried by the support, wherein the anti-fouling means includes actuators configured to cause the medium to vibrate in a standing mode with a wavelength 3-20 times the size of the SOI to confine the SOI on the sensitive zone, includes activating the anti-fouling means in a de-fouling mode, stopping the anti-fouling means, activating the anti-fouling means to confine the SOI in the sensitive zone, and stopping the anti-fouling means. The method also includes activating the detection means and stopping the detection means.

Abstract: A multimodal haptic device includes a matrix incorporating at least one cell, each cell comprising: at least one thermal element capable of generating a cooling and a heating; at least one vibratory element capable of generating a vibration; and at least one encapsulation layer made of an electrically insulating material; the at least one vibratory element and the at least one thermal element being anchored in at least one part in the at least one encapsulation layer; each cell being adapted to be in contact directly or indirectly with the skin of a person so as to transmit thermal and/or vibratory sensations to that person, the cell having a thickness less than or equal to ten millimetres.

Abstract: An optoelectronic device including at least one electromechanical transducer located vertically in line with at least one light-emitting diode, said at least one electromechanical transducer and said at least one light-emitting diode being connected to conductive tracks of a same transfer substrate.

Abstract: A flexible haptic interface including a haptic structure defining a touch surface touchable by a user, the structure including a plurality of stiff touch pixels borne by a flexible carrier, at least one actuator that makes contact with each pixel and that is arranged to transmit, to the pixel, a mechanical excitation that leads to an effect perceptible tactilely by the user.

Abstract: Flexible haptic interface including a chamber containing a non-newtonian fluid and bounded at least partially by a flexible wall the exterior face of which defines a touch surface capable of being touched by a user; a plurality of actuators borne by a flexible carrier and placed so as to transmit a local mechanical excitation to the fluid; and a control circuit connected to the actuators and configured to modulate the signals sent to the actuators in order to mechanically induce a modification of the rheology of the fluid and to generate a haptic sensation perceptible by the user on the touch surface.

Abstract: A device including: a transfer substrate including electric connection elements; and a plurality of elementary chips bonded and electrically connected to the transfer substrate, each elementary chip including at least one photodetector and an electronic circuit for reading from the at least one photodetector, the device further including, associated with at least one elementary chip, an emission, capture, or actuation element external to the elementary chip, bonded and electrically connected to the transfer substrate, each elementary chip including an electronic circuit for controlling the emission, capture, or actuation element associated with the chip.

Abstract: A micrometric speaker includes a frame, an electromechanical transducer, and a mechanical-acoustic transducer comprising a rigid plate movably mounted in the frame. The electromechanical transducer comprises two piezoelectric actuators and two elastic strips. The frame comprises a central crossmember from which the two strips extend until engaging two lateral coupling edges of the mechanical-acoustic transducer, and the mechanical-acoustic transducer comprises two linearising springs each extending from one of the lateral edges to the rigid plate, to enable, during a deformation of the strips, a movement of the two lateral edges to the central crossmember and reduce the longitudinal constraints applied to the strips during their deformation due to their “recessed-guided” bending configuration.

Abstract: A piezoelectric transducer device includes a support, a piezoelectric element, a first connecting element and a second electrical connecting element, the piezoelectric element being carried by the support and each of the first and second electrical connecting elements being electrically connected, respectively, to a first area and a second area, distinct from the first area, of the piezoelectric element, the piezoelectric element including a lower face opposite the support and an upper face, opposite to the lower face, wherein the upper face is integrally exposed or is covered, partially or not, only with the second electrical connecting element.

Abstract: A portable virtual, augmented, or mixed reality device, including: a mount intended to be worn on a user's head; a display screen attached to the mount and intended to be arranged in front of one of the user's eyes; a plurality of ultrasound transducers attached to the mount; and a control circuit configured to control the display screen to display images, and the ultrasound transducers to generate, in air, at a distance from the mount, a pressure distribution detectable by the user's hand to obtain a haptic effect.

Abstract: Flexible haptic interface including a chamber containing a non-newtonian fluid and bounded at least partially by a flexible wall the exterior face of which defines a touch surface capable of being touched by a user; a plurality of actuators borne by a flexible carrier and placed so as to transmit a local mechanical excitation to the fluid; and a control circuit connected to the actuators and configured to modulate the signals sent to the actuators in order to mechanically induce a modification of the rheology of the fluid and to generate a haptic sensation perceptible by the user on the touch surface.

Abstract: A flexible haptic interface including a haptic structure defining a touch surface touchable by a user, the structure including a plurality of stiff touch pixels borne by a flexible carrier, at least one actuator that makes contact with each pixel and that is arranged to transmit, to the pixel, a mechanical excitation that leads to an effect perceptible tactilely by the user.

Abstract: A multimodal haptic device includes a matrix incorporating at least one cell, each cell comprising: at least one thermal element capable of generating a cooling and a heating; at least one vibratory element capable of generating a vibration; and at least one encapsulation layer made of an electrically insulating material; the at least one vibratory element and the at least one thermal element being anchored in at least one part in the at least one encapsulation layer; each cell being adapted to be in contact directly or indirectly with the skin of a person so as to transmit thermal and/or vibratory sensations to that person, the cell having a thickness less than or equal to ten millimetres.

Abstract: A haptic interface of the ‘mid-air’ type, including a control circuit, a plurality of ultrasonic transducers connected to the circuit, which includes a first set of transducers emitting at a first ultrasound carrier frequency and at least a second set of transducers emitting at a second ultrasound carrier frequency different from the first; the control circuit being configured for modulating the signals sent to the transducers in order to generate, with the ultrasound waves emitted by at least a part of the transducers of the first set, an acoustic pressure detectable by touch within at least a first focal region, and generate, with the ultrasound waves emitted by at least a part of the transducers of the second set, an acoustic pressure detectable by touch within at least a second focal region.