应用于葡萄糖溶液检测的人工电磁超表面结构设计  

Artificial electromagnetic metasurface structure design for glucose solution detection

作　　者：于兵[1,2] 肖锋 柳鑫 程海波 蔡希玮 谢玮强 YU Bing;XIAO Feng;LIU Xin;CHENG Haibo;CAI Xiwei;XIE Weiqiang(College of Electronics and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China;Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology(CICAEET),Nanjing 210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,江苏南京210044 [2]江苏省大气环境与装备技术协同创新中心,江苏南京210044

出　　处：《传感器与微系统》2024年第9期116-118,122,共4页Transducer and Microsystem Technologies

基　　金：科技部行业专项子课题(GYHY201206038)。

摘　　要：提出了一种用于葡萄糖浓度检测的电磁近场聚焦人工超表面结构。经人工超表面反射的电磁波近场聚焦位置对介电常数具有高敏感性,据此能够对不同浓度的葡萄糖溶液进行检测。该结构尺寸为400 mm×400 mm×1 mm,由20×20个具有不同电磁波反射相位差的异构人工超表面单元组成。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,进而对聚焦位置产生显著的影响,溶液相对介电常数变化的检测灵敏度为0.027%。An electromagnetic near-field focused artificial metasurface structure for glucose concentration detection is put forward.Focusing position of the electromagnetic wave near-field reflected by artificial metasurface has high sensitivity to the dielectric constant of the glucose,which can detect different concentrations of glucose solution.The size of structure is 400 mm×400 mm×1 mm,it consists of 20×20 heterogeneous artificial metasurface elements which has different electromegnetic wave reflection phase difference.In order to verify the feasibility of the design,experimental tests on glucose solutions with different concentration values are carried out.The result shows that variation of glucose concentration value will lead to variation of the relative dielectric constant of the solution,further has a significant impact on the focusing position.The detection sensitivity of variation of the relative dielectric constant of the solution is 0.027%.

关 键 词：人工超表面 近场聚焦 葡萄糖溶液浓度检测 相位补偿 

分 类 号：TN98[电子电信—信息与通信工程]