吸光感度増感型表面プラズモンセンサによる微量溶液中の吸収物質検出

概要

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We developed a sensor system to detect contamination in extremely small amount of liquid sample. Detection method is based on absorption measurement using surface plasmon sensor with enhanced absorptionsensitivity. Calculated result shows that the absorption-sensitivity of the sensor is -720 times higher than that of ordinary transmission method and-46 times higher than that of atteunated-total-reflection method. The minimum amount necessary for the absorption measurement is 2.4 pl from the calculation. We suc-cessfully detected methylene blue of 4.5 pg in 30μL water using this system. We expect that this sensor system can also be applied to qualitative analysis of other liquid samples having very small quantity together with reagent.
社団法人日本分光学会の論文