35 results about "Surface plasmon resonance biosensor" patented technology

A near-field surface plasmon detector is provided. The near-field surface plasmon detector includes one or more semiconductor layers that absorb one or more surface plasmons of thin metal films in the vicinity of the semiconductor layer. The surface plasmons are excited by incoming light being emitted from a light emitting source. The metal films are also employed as electrical contacts used to capture photocurrent generated after absorption of surface plasmons by the semiconductor layers.

A portable penetrating surface plasmon resonance biosensor and its preparation and detection method, the sensor includes a strip of optical glass, the bottom of which is coated with a metal internal reflection film, the side wall is coated with a chromium film, and the nano-chromium film is coated with biological The gold film of the molecular sensitive layer, and the incident optical path of the strip optical glass is equipped with a collimator, and the outgoing optical path is sequentially equipped with a polarizer, an optical fiber collimator, and a fiber optic spectrometer connected to the optical fiber collimator through a multimode optical fiber. Metal internal reflection film is coated on the bottom of the strip optical glass; chrome film and gold film are sequentially plated on the side wall of the top; a biomolecular sensitive layer is formed on the surface of the gold film; and sealed with BSA solution to obtain a penetrating surface plasma Body resonance biosensors. The invention inserts the test tube into the liquid for SPR measurement, simplifies the system and realizes the portability of the sensor. At the same time, it overcomes the defects of the existing probe-type SPR sensor, and its measurement method is much simpler, realizing the portability of the instrument.