CSEM Centre Suisse d'Electronique et de Microtechnique SA - Recherche et Développement

Method of estimating an internal temperature of a lithium-ion cell (1), comprising steps of: a) carrying out an electrochemical impedance spectroscopy measurement on said cell (1) at a known internal temperature so as to determine a phase of impedance at a plurality of electrochemical impedance spectroscopy frequencies; b) carrying out a distribution of relaxation times analysis on said electrochemical impedance spectroscopy measurement; c) determining a characteristic frequency corresponding to an electrochemical impedance spectroscopy frequency associated with movement of lithium ions through a solid electrolyte interface layer of said cell, on the basis of said distribution of relaxation times analysis; d) providing a correlation curve representative of the relationship between the impedance phase at said characteristic frequency and internal temperature for said cell (1), and carrying out a calibration of said correlation curve on the basis of said impedance phase as measured in step a) at said characteristic frequency and said known internal temperature; e) repeatedly, carrying out electrochemical impedance spectroscopy at said characteristic frequency to determine an impedance phase at said characteristic frequency; f) on the basis of said impedance phase at said characteristic frequency as determined out in step e), estimating said internal temperature based on said correlation curve as calibrated in step d); g) repeatedly, updating said characteristic frequency and updating said calibration by repeating steps a)-d).

A biological entities sorting apparatus (1) is disclosed, which comprises a picking head (14) carrying a picking tip (16) defining a picking axis, and an illumination device (30) arranged to cooperate with a camera (26) via a given optical path (32). The illumination device (30) and the camera (26) can be driven to move to an appropriate position for carrying out the acquisition of images of a biological entity to pick up from a picking position in a sample, while the picking head (14) can be driven to move and place the picking tip (16) it carries in a picking configuration, in which it may pick up the biological entity of interest while being kept out of the corresponding optical path (32) so that images can be acquired during the picking procedure.

A sorting device (1) comprising a picking station (4) and an identification and localization system, adapted to allow selective picking up of an biological entity from a source vessel (2) containing a sample including a plurality of biological entities, to selectively dispense the selected biological entity into a destination vessel (6), the picking station (4) including a vessel support (30) for bearing a source vessel (2), mounted in a movable manner, as well as a control unit and a driving organ adapted to control the movements of the vessel support (30), so as to drive the latter along looped trajectories with predefined shapes and speed parameters which are adapted to stir the sample and provide relative movements of the plurality of biological entities between each other and with respect to the source vessel (2).

Anode (1) for a rechargeable cell, comprising: - a lithium layer (5); - a composite coating (7; 7a, 7b) provided on said lithium layer (5), said composite coating (7; 7a, 7b) comprising a first metal other than lithium and at least one inorganic metallic compound, said first metal and said at least one inorganic metallic compound being intermingled in at least part of said composite coating.

Photonic Integrated Circuit comprising a stacking of layers comprising:a substrate defining a plane and a stacking direction perpendicular to said plane,a buried oxide layer provided on top of said substrate,a patterned layer of electro-optic material comprising at least one optical waveguide of said electro-optic material, provided on top of said buried oxide layer,a first patterned metal layer comprising a first group of metallic structures, provided on top of said electro-optic material and/or said buried oxide layer,a dielectric cladding volume, provided on top of said buried oxide layer, said patterned layer of electro-optic material and said first patterned metal layer,a second patterned metal layer comprising a second group of metallic structures embedded in said dielectric cladding volume, wherein there is at least one electrical connection between at least two metallic structures from said first and second groups through at least one via,characterized in that said second patterned metal layer is provided at a distance along the stacking direction between 1 and 2.5 micrometres from said at least one optical waveguide.

Method of determining the state of health of a battery (1), comprising steps of:- carrying out a full charging or discharging cycle on said battery (1), while taking voltage and current measurements, and generating an initial differential capacitance curve based on said voltage and current measurements;- extracting n values of differential capacitance at a plurality of voltages spaced at predetermined voltage intervals across a predetermined voltage range;- fitting a model curve to said n values of differential capacitance;- integrating said model curve to obtain an initial capacity measurement;- periodically, measuring differential capacitance at one of said predetermined voltages;- updating said model curve based on said measured differential capacitance;- integrating said updated model curve to obtain an updated capacity measurement;- comparing said updated capacity measurement to said initial capacity measurement in order to determine said state of health.

La présente divulgation concerne un procédé de fabrication d'un composant comportant un motif de microstructure sur une résine colorée, comprenant:fournir un moule d'impression (30) comportant un motif de moule (32) comprenant des éléments de structuration ayant une dimension de taille micrométrique et/ou nanométrique;fournir un substrat (10) et former une couche de résine (20) colorée sur un substrat (10), la résine comportant au moins un agent colorant;répliquer sur la couche de résine (20) un motif répliqué (22) correspondant au négatif du motif de moule (32), comprenant l'application du moule d'impression (30) contre la couche de résine (20); etréticuler la résine (20) de manière à produire une résine durcie comportant le motif répliqué (22).Le motif de moule (32) comprend des éléments de structuration ayant une dimension latérale moyenne entre 1 nm et 5000 µm, et un rapport d'aspect entre la hauteur des éléments de structuration et la dimension latérale moyenne entre environ 0.1 et 2.

Method of manufacturing a photonic integrated circuit with at least one lithium niobate waveguide comprising the following steps : i) providing a lithium niobate-on-insulator (LNOI) stacking, said stacking comprising a silicon (Si) substrate, a first silicon dioxide (SiOz) layer, a lithium niobate (LiNbO<3>) layer, and a cladding dielectric layer, wherein said lithium niobate layer comprises said lithium niobate waveguide, ii) applying a first photoresist mask on said cladding dielectric layer and creating at least one opening in said first photoresist mask by a photolithography process, iii) implementing a first etching step by Reactive-ion etching (RIE) through said at least one opening, thereby creating at least one cavity across all the thickness of said cladding dielectric layer, said lithium niobate layer and said first silicon dioxide layer, iv) implementing a second etching step by Deep Reactive-ion etching (DRIE) through at least part of said at least one opening, whereby at least part of said at least one cavity is extended further through the silicon substrate along a predetermined depth of at least 100 micrometres.

The present invention is related to a MEMS-based accelerometer (1) comprising:- a frame (2),- a platform (3) forming an inertial mass M, and defining a platform plane XY,- at least 10, preferably at least 20, more preferably at least 50, straight-shaped tethers (4) coupling said platform (3) to said frame (2),- detection means to detect the displacement of the platform (3) with respect to the frame (2),characterized in that the tethers (4) extend in at least two different directions along said platform plane XY.

A dipstick electrochemical sensing device (1) is disclosed, for assessing an analyte in a fluid sample (44), comprising a main body (2) provided with a reference electrode (4) and a working electrode (6, 8, 10),wherein the reference electrode (4) is located in a reference chamber (18) provided with a first port (20), while the working electrode (6, 8, 10) is located in a measurement chamber (22) provided with a second port (24),wherein the sensing device (1) is further provided with a bridge (32), connecting the reference and measurement chambers (18, 22) through corresponding interfaces (28, 30), and through which a fluid may flow, at least one interface (30) having fluid flow restricting characteristics which are pressure dependent, andwherein the measurement chamber (22) is partially delimited by a removable wall (34) so that it can be removed to open a main opening through which the fluid sample can enter inside the measurement chamber (22) and contact the working electrode (6, 8, 10) for the purpose of conducting an assessment.