Abstract: Method for measuring a parameter of interest in a target environment (2) by means of a non-invasive sensor (1) based on photoacoustic detection or photothermal detection, comprises: a) a sensor that comprises an adaptation module (14) is provided comprising a processor that implements an inverse modelling algorithm; b) the adaptation module chooses an initial model irradiation configuration; c) it determines, in a correspondence table, the optimal irradiation case; d) a light source irradiates the target environment according to the optimal irradiation case; e) a detection cell detects a signal; f) the processor of the adaptation module returns a current model configuration (CMmes) and an estimated value for the parameter of interest (Pest); g) the processor of the adaptation module evaluates the chosen model irradiation configuration, and only if this irradiation model configuration differs from the current model configuration; g1) it receives the current model configuration (CMmes).

Abstract: A method for determination of an event-related index for a human user, where: one provides time-based data for an observation period, with: time-based blood glucose data for the totality of the observation period, said time-based blood glucose data being derived from a continuous glucose monitor, time-based event data for the event period, a computerized index determination module determines said event-related index as a composite index of the blood glucose data related to the event period and the blood glucose data outside the event period.

Abstract: A photoacoustic detecting device to be applied, via a contact face, against a medium to be analyzed, the device comprising: a hollow cavity; a light source that is pulsed or amplitude-modulated; an acoustic detector configured to detect an acoustic wave extending through the cavity, the device further comprises an interface membrane, forming the contact face, the interface membrane being configured to: form an interface between the gas, filling the cavity, and the medium to be analyzed; block passage of a liquid or gel between the medium to be analyzed and the cavity; and generate an acoustic pressure wave inside the cavity, under the effect of a variation in the temperature of the interface membrane, the temperature variation of the interface membrane being induced by heating of the medium resulting from illumination of the medium.

Abstract: A photoacoustic detecting device comprises a housing which houses: a lighting module, a photoacoustic cell, comprising an surface contact intended to be placed in contact with the medium to analyse, a photoacoustic cavity extending from the surface contact to a top of the photoacoustic cell, at least one window closing the top of the photoacoustic cell or the contact surface of the photoacoustic cell, at least one subwavelength pattern located on a surface of said window, said subwavelength pattern being configured to focus the light beam on an surface of interest of the medium to analyse, a sensor, linked to the cavity, the sensor being configured to detect a generated signal, said generated signal being generated in the photoacoustic cavity by a photothermic effect in the medium, and wherein the photoacoustic cell, the window and the subwavelength pattern are formed on a single silicon wafer.