SURFACE ENHANCED INFRARED ABSORPTION SENSOR AND PROCESS FOR RPODUCING THE SURFACE ENHANCED INFRARED ABSORPTION SENSOR

摘要

This invention provides a process for producing a surface enhanced infrared absorption sensor, characterized by adsorbing metallic nanoparticles dispersed in a solution on a surface of a substrate, or allowing the adsorbed metallic nanoparticles to be grown in the solution, thereby forming a film, applying infrared light from the substrate on its side remote from the metallic nano-thin film, detecting evanescent waves, which exuded from the substrate, and regulating a surface enhanced infrared absorption activity while monitoring surface enhanced infrared absorption signals in situ, whereby the metallic nano-thin film is grown in the form of flat and divided islands. According to the above process, a surface enhanced infrared absorption (SEIRA) sensor having a higher sensitivity and excellent reproducibility can be produced in a simpler and more cost-effective manner.