ANALYZING ELEMENT AND METHOD FOR ANALYZING SAMPLE USING THE SAME

摘要

PROBLEM TO BE SOLVED: To facilitate a control of a structure of a diffraction grating and a control of properties of a surface which is contacted with a sample as an optical structure for inducing an evanescent wave in an analyzing element for analyzing a sample utilizing a surface plasmon resonance(SPR). SOLUTION: The analyzing element comprises the diffraction grating 5 formed by discretely laminating thin films 4 on a flat surface supported to a substrate 2, and a metal film formed by selecting any of a layer 3 for imparting the flat surface and the films 4.