Dynamic protection device based on the effect of surface plasmon resonance.

摘要

Dynamic detection device based on the effect of surface plasmon resonance, comprising (i) a transmitter (20) and a radiation detector (30) of radiation; (Ii) a substrate (40) fluid containing channels (43) and at least one zone (41) of detection, in which a surface (42) of detection DS is so constructed that allowed to occur the effect surface plasmon resonance, whereby said substrate is placed in the radiation path between the emitter (20) and the radiation detector (30) radiation X; (Iii) a layer (80) of liquid crystal, placed between the emitter (20) and the radiation detector (30) of radiation, which may have at least two states of orientation, in order to induce different modifications of radiation (101) incident on the surface (42) of detection DS or outgoing radiation (102) from the detection surface; (Iv) control means for controlling the average orientation of the molecules (83) liquid crystal layer (80) liquid crystal in order to dynamically adjust the radiation properties in order to optimize the detection of signal surface plasmon resonance; wherein the control means controls the layer (80) of liquid crystal so that it behaves like a converging or diverging lens, enabling the control and adjustment of the equivalent focal length of the layer (80) of liquid crystal through a field externally applied, and wherein the device enables the determination of chemical and / or biological through the effect of surface plasmon resonance that occurs in the vicinity of the surface (42) of detecting the zone (41) detection.