Abstract An optically semiconductor metamaterial sensor for solute concentration sensing is designed based on plasmonically induced transparency (PIT) effect. The concentration of two aqueous solutions, NaCl and ethanol in water solutions are investigated using the proposed optical sensor. The optimization process to find the best geometrical size for the antennas and also the material thicknesses cause to have a very high sensitivity for two aqueous sensor so that the maximum sensitivity for NaCl solution is approximately 224 μ m R I U which is a high value in comparison with the reported values in literature and the optical sensitivity of ethanol-water concentration is 27.2 μ m R I U which is an ultra-high value compared to literature reported values. The values of 1.5 × 10 − 2 and 4.7 × 10 − 2 in refractive index unit are obtained for limit of detection and quantification, respectively.

中文翻译：

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使用光学超材料传感器检测两种水溶液中的溶质浓度

摘要 基于等离子体诱导透明（PIT）效应，设计了一种用于溶质浓度传感的光学半导体超材料传感器。使用所提出的光学传感器研究了水溶液中两种水溶液（NaCl 和乙醇）的浓度。为天线找到最佳几何尺寸以及材料厚度的优化过程导致两个水性传感器具有非常高的灵敏度，因此 NaCl 溶液的最大灵敏度约为 224 μ m RIU，与文献报道值和乙醇-水浓度的光学灵敏度为 27.2 μ m RIU，与文献报道值相比，这是一个超高值。1.5 × 10 − 2 和 4 的值。