基于C型太赫兹超材料的高灵敏度生物传感器  

High sensitive terahertz biosensor based on C-type metamaterial

作　　者：陈淑瑜[1] 王俊兴 韦德泉 王猛 张富川 CHEN Shuyu;WANG Junxing;WEI Dequan;WANG Meng;ZHANG Fuchuan(School of Mechanical and Electrical Engineering,Zaozhuang University,Zaozhuang 277160,Shandong Province,China;School of Optoelectronic Engineering,Zaozhuang University,Zaozhuang 277160,Shandong Province,China)

机构地区：[1]枣庄学院机电工程学院,山东枣庄277160 [2]枣庄学院光电工程学院,山东枣庄277160

出　　处：《电子元件与材料》2020年第4期44-50,共7页Electronic Components And Materials

基　　金：国家重点研发计划重点专项(2017YFB1401200);国家自然科学基金(61701434);山东省自然科学基金(ZR2018LF001,ZR2017MF005);枣庄市自主成果转化项目(2016GH19);枣庄市科技计划项目(2016GX31);泰山学者工程专项经费资助。

摘　　要：提出了一种基于C型超材料的太赫兹波段高灵敏度透射型生物传感器。利用电磁场软件CST2016对其传感器的特性进行研究。通过改变四个微纳金属结构的旋转角度、微纳金属结构的位置,对其传感器的Q值特性进行了分析,并进一步研究了微流通道的通道高度、覆盖层和基底的介电常数对其传感器灵敏度的影响。研究结果表明,当微纳金属结构旋转角度75°,上下金属结构间位置相对平移3μm,微流通道高度45μm,覆盖层和基底采用相对介电常数为2.25的聚乙烯材料时,设计的C型超材料生物传感器的灵敏度为0.0936 THz/RIU。该传感器在太赫兹波生物医学领域有着广阔的应用前景。A high sensitive biosensor was proposed based on C-type terahertz metamaterial.The biosensor were designed by the electromagnetic field software CST2016.By varying the relative rotation angle and position of the four C-type structures,the Q-value of the biosensor were analyzed.The dependence of sensitivity of the sensor were further studied on height of the microfluidic channel,the covering layer and the dielectric constant of the substrate.The results show that the sensitivity of designed C-type metamaterial biosensor is 0.0936 THz/RIU at rotation angle of 75°and shift distance of 3μm between upper and lower metal structure with microchannel height of 45μm and dielectric constant of 2.25 for the polyethylene coating and substrate material.The designed biosensor exhibits a great potential in biomedicine applications.

关 键 词：太赫兹 C型超材料 生物传感器 CST 微流通道 Q值 

分 类 号：TP212.[自动化与计算机技术—检测技术与自动化装置]