Metamaterial-based wireless strain sensors
Metamaterial-based wireless strain sensors
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DOI：
10.1063/1.3162336
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发表时间：
2009-07-06
影响因子：
4
通讯作者：
Demir, Hilmi Volkan
中科院分区：
文献类型：
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作者：
Melik, Rohat;Unal, Emre;Demir, Hilmi Volkan
我们提出并证明了基于超材料的应变传感器，对机械变形高度敏感。它们的共振频率偏移与我们的测试材料的表面应变和应变数据的遥测报告。这些超材料传感器比传统的射频（rf）结构更好地提供高品质因数和大传输骤降的谐振传感。使用开口环谐振器（SRR），与其他rf结构相比，我们实现了每单位面积更低的谐振频率，允许在软组织中进行生物植入物感测（例如，骨折愈合）。在5 X 5 SRR架构中，我们的无线传感器具有高灵敏度（109 kHz/kgf或5.148 kHz/微应变）和低非线性误差（
We proposed and demonstrated metamaterial-based strain sensors that are highly sensitive to mechanical deformation. Their resonance frequency shift is correlated with the surface strain of our test material and the strain data are reported telemetrically. These metamaterial sensors are better than traditional radio-frequency (rf) structures in sensing for providing resonances with high quality factors and large transmission dips. Using split ring resonators (SRRs), we achieve lower resonance frequencies per unit area compared to other rf structures, allowing for bioimplant sensing in soft tissue (e.g., fracture healing). In 5 X 5 SRR architecture, our wireless sensors yield high sensitivity (109 kHz/kgf, or 5.148 kHz/microstrain) with low nonlinearity error (