蛍光偏光法を用いた塗布型ジェルセンサーによる表面温度計測

抄録

In this study, we developed a spread-gel-type sensor that can measure the surface temperature of objects and human body. Water solution of hydroxyethyl cellulose and sucrose was used as the gel. Fluorescent molecules were mixed in the gel as probes, and the fluorescence polarization, which shows a correlation with temperature due to the rotational Brownian motion of the molecules, was measured to obtain the temperature. In order to increase the accuracy of temperature measurement, models that take into account the heat transfer problem of the gel and the water evaporation effects on the sucrose concentration were discussed. We applied these models to the time distributions of the degree of polarization to first evaluate the gel thickness and evaporation rate, and then derive the temperature of the surface on which the gel was spreaded.