Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles
Microfluidic metamaterial sensor: Selective trapping and remote sensing of microparticles
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微流控超材料传感器：微粒的选择性捕获和遥感
DOI：
10.1063/1.4973492
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发表时间：
2017-01-14
影响因子：
3.2
通讯作者：
Lee, Chengkuo
中科院分区：
文献类型：
--
作者：
Shih, Kailing;Pitchappa, Prakash;Lee, Chengkuo
我们实验证明了集成的微流体陷阱阵列的超材料谐振器的尺寸选择性捕获和遥感的微粒。开口环谐振器（SRR）设计支持在基本电感-电容谐振模式下的电容性开口间隙中的强约束电场。SRR间隙中的严格限制的电场形成了一个热点，该热点已成为传感应用的支持平台。在这里，我们通过在分裂间隙附近制造梯形结构将超材料感测的概念扩展到“捕获和感测”，该梯形结构使得能够在每个SRR的分裂间隙区域中捕获微粒。所提出的微流体超材料传感器能够感测不同折射率的微粒在太赫兹光谱区域中操作的基本谐振模式的透射振幅和谐振频率的变化方面。所提出的方法利用微流体，Meta…
We experimentally demonstrate the integration of a microfluidic trap array on top of metamaterial resonators for size selective trapping and remote sensing of microparticles. A split-ring resonator (SRR) design supports strongly confined electric field in the capacitive split gap at the fundamental inductive-capacitive resonance mode. The tightly confined electric field in the SRR gap forms a hot-spot that has become an enabling platform for sensing applications. Here, we extend the concept of metamaterial sensing to “trapping and sensing” by fabricating trapezoidal shaped structures near the split gap that enables trapping of microparticles in the split-gap region of each SRR. The proposed microfluidic metamaterial sensor enables sensing of different refractive index microparticles in terms of change in the transmitted amplitude and resonance frequency of the fundamental resonance mode operating in the terahertz spectral region. The proposed approach exploits the advantages offered by microfluidics, meta...