基于人工电磁超表面的葡萄糖溶液检测装置

Glucose Solution Detector Based on Artificial Electromagnetic Metasurface Structure

提出了一种基于人工电磁超表面结构的葡萄糖浓度检测装置。基于经人工超表面反射的电磁波近场聚焦特性对介电常数具有的高敏感性,实现了对葡萄糖溶液浓度的高精度检测。该人工超表面结构尺寸为400×400×1 mm^(3),由20×20个具有不同电磁波反射相位差的异构人工电磁超表面单元组成。为验证设计的可行性,对不同浓度值的葡萄糖溶液进行了实验测试,结果表明葡萄糖浓度值的改变将导致溶液相对介电常数的改变,进而对聚焦特性产生显著的影响,葡萄糖溶液的最大检测误差低于3.8%,检测线性度优于0.96。

A glucose concentration detection device based on artificial electromagnetic metasurface structure is put forward.The electro⁃magnetic wave near⁃field focusing characteristic of artificial metasurface reflection is high sensitive to dielectric constant,which can real⁃ize high precision detection of glucose solution concentration.The structure size of the artificial metasurface is 400×400×1 mm^(3),consis⁃ting of 20×20 heterogeneous artificial electromagnetic metasurface units with different electromagnetic wave reflection phase differences.In order to verify the feasibility of the design,experimental tests are carried out on glucose solutions with different concentration values.The measured findings reveal that the change of glucose concentration value will lead to the change of the relative dielectric constant of the solution,which will have a significant impact on the focusing characteristics.The maximum detection error of glucose solution is less than 3.8%,and the detection linearity is better than 0.96.