Abstract: The invention concerns a Thickness Shear Mode (TSM) biosensor (1) which comprises an ex vivo living skin explant (2), the skin explant (2) comprising at least one of the skin layers among: hypodermis, dermis (2A), epidermis (2B) and the stratum corneum (2C), a TSM transducer (3) which comprises: an AT cut quartz resonator 3C which has two opposite exterior surfaces (3A,3B), and two conducting electrodes (4A, 4B), each conducting electrode being deposited on one of the two exterior surfaces (3A,3B), the TSM transducer (3) allowing to determine micro rheological characteristics of the living skin explant (2) by piezoelectric transducing using shear waves, the TSM transducer (3) presenting: measuring means (30), monitoring and calculating means (31) which monitor an evolution in time of an electrical response of the living skin explant (2), and which calculate in time, from the electrical response, micro rheological characteristics of the living skin explant (2), a bottom surface of the skin explant (2) being in

Abstract: The invention concerns a Thickness Shear Mode (TSM) biosensor (1) which comprises an ex vivo living skin explant (2), the skin explant (2) comprising at least one of the skin layers among: hypodermis, dermis (2A), epidermis (2B) and the stratum corneum (2C), a TSM transducer (3) which comprises: an AT cut quartz resonator 3C which has two opposite exterior surfaces (3A,3B), and two conducting electrodes (4A, 4B), each conducting electrode being deposited on one of the two exterior surfaces (3A,3B), the TSM transducer (3) allowing to determine micro rheological characteristics of the living skin explant (2) by piezoelectric transducing using shear waves, the TSM transducer (3) presenting: measuring means (30), monitoring and calculating means (31) which monitor an evolution in time of an electrical response of the living skin explant (2), and which calculate in time, from the electrical response, micro rheological characteristics of the living skin explant (2), a bottom surface of the skin explant (2) being in

Abstract: A piezoelectric sensor for the detection and characterization of at least one biochemical element in a fluid, has a piezoelectric substrate exhibiting at each of its opposite faces at least one conducting surface forming electrodes, the electrodes being linked to an electrical generator, one at least of the surfaces being wrapped in a functionalized film, the electrodes form transmission lines exhibiting a zone constituting an induction loop for the excitation of the piezoelectric substrate, the link between the electrodes and the generator being ensured by inductive coupling. A system implementing such a sensor, as well as applications of such a sensor, are described.