高灵敏度

基于银纳米粒子/多壁碳纳米管复合材料直接印刷高灵敏、可拉伸、耐用的应变传感器

ty10086 提交于 周四, 08/26/2021 - 13:14
Abstract(#br)Strain sensors with high sensitivity and large stretchability are of interest in various engineering fields. Here, directly printed stretchable strain sensors with great sensitivity and high durability was fabricated using aerodynamically focused nanomaterials (AFN) printing system. Specifically, microscale porous conductive patterns composed of silver nanoparticles (AgNPs) and multi-walled carbon nanotubes (MWCNTs) composites are printed onto polydimethylsiloxane (PDMS) for stretchable strain sensor.

MIM波导结构由两个三角形枝节组成,侧面耦合一个八字形谐振腔

ty10086 提交于 周三, 08/25/2021 - 16:13
本文提出了一种基于Fano共振的高灵敏度光学传感器。该传感器由两个对称三角形枝节的金属-绝缘体-金属( MIM )波导组成,边耦合一个带枝节的方环谐振器( SRS ),利用二维有限元算法,系统地探究了MIM波导结构的传输特性。这一分析揭示了MIM波导与SRS之间的耦合作用导致了Fano共振的出现。使用聚二甲基硅氧烷( PDMS )密封谐振器后,获得了-20.3   nm / μC的优异温度灵敏度。此外,还详细研究了MIM波导的宽度、耦合距离、两个对称三角形存根之间的距离以及谐振器的几何参数对Fano谐振线的影响。优化这些结构参数,得到峰值折射率( RI )灵敏度为6000   nm / RIU,优值图( FOM )为17RIU-1,不仅有助于缩小与光纤传感器的差距,也为超高灵敏RI传感器和温度传感器的设计和应用铺平了道路。