Triangular microprism rotating SPR (surface plasmon resonance) testing optical chip

The invention belongs to the field of optical sensing and material engineering, and particularly relates to a triangular microprism rotating SPR (surface plasmon resonance) testing optical chip whichcan be used for the fields of biosensing, medical diagnosis, pharmaceutical research and development, food safety and the like. The triangular microprism rotating SPR testing optical chip comprises aright angled triangle microprism optical substrate, a nano-metal film, a resonance enhancing film and a base. The chip has the advantages that the chip is in cost, miniaturized, easy to integrate, mass production can be achieved, a sensing system chip is easily replaced and the like. The chip overcomes the shortcomings of complicacy in operation, high cost and the like of a traditional sensing detection technology. According to a modulation mode of the chip, the chip is fixed onto a rotation platform, the rotation platform is rotated along a center axis perpendicular to the non-rectangular surface of the right triangle