| 摘要 |
A surface plasmon resonance (SPR) assay apparatus has at least one sensor unit. A sensing surface of the sensor unit is adapted to causing interaction between ligand and analyte. An optical assay unit applies illuminating light through the dielectric medium to the light entrance surface in such a form as to satisfy a condition of total reflection, and detects the illuminating light reflected by the light entrance surface during the interaction of the ligand and the analyte. There is an immobilizing stage for introducing the ligand to the sensor unit to be immobilized on the sensing surface. An assay stage causes the analyte to contact the sensing surface, and assays the interaction by detecting attenuation of the illuminating light. A stacking stage storing the sensor unit after introduction of the ligand before assay in the assay stage.
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