METHOD AND DEVICE FOR DETECTING TRACE SUBSTANCE BY SURFACE ENHANCED RAMAN SCATTERING

摘要

Method and device for detecting trace substance by SERS substrate in which quick observation is ensured while excellent practicality is exhibited. The method for detecting trace substance by surface enhanced Raman scattering comprises a step for mixing an analyte with metal fine particle colloid provided previously, a step for dripping mixture of analyte and metal fine particle colloid onto a solid state plane, a step for drying the dripped mixture on the solid state plane, and a step for irradiating the fringe portion of the dry body of mixture on the solid state plane with laser light and observing Raman scattering light. In particular, a dry body structure in the shape of tree or lump formed at the fringe portion of the dry body is irradiated with laser light and Raman scattering light is observed. The solid state plane may be a metal plane having plasmon mirror effect.