In order to solve the problem of low sensitivity of existing
fiber optic SPR biosensors, the invention provides a sensitized
fiber optic SPR sensor based on
graphene oxide and gold nanorods. Accordingto the sensitized
fiber optic SPR sensor based on the
graphene oxide and the gold nanorods, the
plasmon coupling effect between a
plasma wave on the surface of a
gold film and a local surface plasmawave on the surface of the gold nanorods is utilized to enhance the
electric field strength. At the same time, the charge transfer between the
gold film and the gold nanorods can be promoted by the
graphene oxide, so that interactions between a surface
plasma wave and a substance to be detected is enhanced, and the detection sensitivity is improved. In addition, the graphene oxide has excellent bio-sensing characteristics,
biocompatibility, and a large specific surface area, can better measure
biomass and chemical quantities. Compared to an ordinary fiber optic SPR sensor, the sensitized fiberoptic SPR sensor based on the graphene oxide and the gold nanorods has higher sensing sensitivity and
chemical stability, real-time monitoring can be performed, the structure of the sensor is compact, thereby being able to widely applied in the fields of
physics,
chemistry,
biology,
medical care,
food safety and the like.