GLASS SUBSTRATE-MOUNTING STRUCTURE IN SURFACE PLASMON RESONANCE ANGLE DETECTION DEVICE, AND ITS METHOD

摘要

PROBLEM TO BE SOLVED: To provide a glass substrate-mounting structure of SPR angle detection device capable of improving the resonance angle detection accuracy by accurately positioning a prism and a glass substrate by a simple operation, and its method. SOLUTION: At least one recessed part 3b to be engaged is formed on the upper surface of the support recessed part peripheral edge of a prism support 3 for supporting a prism 5. A glass substrate 25 where a metal thin film is formed on the upper surface is mounted into the opening of a substrate holder 27 that is provided opposite to the upper surface of the prism and at the same time an engagement projecting part that opposes the recessed part to be engaged to the opening peripheral edge is provided. A cell block 9 where a flow cell 9a is provided opposite to the metal thin film of the glass substrate 25 is supported so that it can travel for the prism support 3. The prism support 3 and the cell block 9 are energized in a direction for constant compression by an elastic member.