Development of a liquid concentration sensor system with a correction of sample temperature using a Au-deposited square-shaped glass-rod SPR sensor system

2022 Fiscal Year Final Research Report

• Project/Area Number: 19K05547
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 34020:Analytical chemistry-related
• Research Institution: Kagoshima University
• Principal Investigator: Mitsushio Masaru 鹿児島大学, 理工学域工学系, 助教 (70372802)
• Co-Investigator(Kenkyū-buntansha): 肥後 盛秀 鹿児島大学, 理工学域工学系, 教授 (10128077)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 表面プラズモン共鳴(SPR) / 多機能センサー / 角型ガラス棒 / 温度補正

Outline of Final Research Achievements

In this study, we have developed a sensor system that can independently and simultaneously measure the responses of adjacent gold-deposited two faces of a square-shaped quartz glass rod in combination with the polarized light. The responses with various film thicknesses of the gold film have also observed. The temperature and the refractive index of the sample were successfully measured by constructing a temperature sensing face covered with silicone rubber and a non-modified refractive index sensing face. The concentration could be obtained by correcting the refractive index of the sample measured by the sensor with temperature.

Free Research Field

Analytical chemistry

Academic Significance and Societal Importance of the Research Achievements

一般的に知られている浮ひょうを用いた濃度計測は厳密な温度管理が必要であり、その使用には技術と設備が要求される。また、迅速で簡便に濃度を知ることができるセンサーは非常に少なく、産業的な需要がきわめて大きい。さらに一般的なSPRセンサーシステムは安くても数百万円ときわめて高価であるため、安価で多機能なセンサーシステムの開発はバイオセンサーの開発や食品分析など様々な分析手法の研究の敷居を大きく下げるため、学術的にもその意義はきわめて大きい。