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Terahertz Sensor Study Based on Spoof Surface Plasmon Polaritons
International Journal of Antennas and Propagation ( IF 1.2 ) Pub Date : 2020-11-12 , DOI: 10.1155/2020/2504626
Ruiqi Zhao 1 , Guizhen Lu 1 , Hongcheng Yin 2 , Jingjing Liang 1 , Dongdong Zeng 1 , Huaibao Xiao 1
Affiliation  

The spoof surface plasmon polaritons (SSPPs) structure can be used as a sensor in THz region for the biosensing. The accuracy of resonance and amplitude for sensor is very important for biosensing. The momentum matching of SSPPs determines the resonance position and the gap distance determines the amplitude. For the biomolecular sensing, the sample is positioned between the prism base and the SSPPs structure. The momentum matching condition at the current study does not consider the effect of sample refractive index and the resonance position has a significant error. Here the correction is made to the momentum matching condition which considers the effect of the sample refractive index. A comparative study of surface plasmon resonance (SPR) sensing performance based on frequency and angle variations shows that the sensing sensitivity for frequency region is superior to that of angle region; in the meanwhile, as an application of biosensors, we have detected different types of brain lesions in the frequency range. Furthermore, the reflection amplitude is related to gap size between the prism and SSPPs. The relationship of gap size and reflection amplitude is studied. By using the relationship between gap size and reflection amplitude, the amplitudes at different frequencies or incident angles for different refractivities have the same reflection dips compared to the other published results. The simulation is performed and the results proved the theory.

中文翻译:

基于欺骗表面等离激元极化子的太赫兹传感器研究

欺骗表面等离振子极化子(SSPPs)结构可用作THz区域中的传感器,用于生物传感。传感器共振和振幅的准确性对于生物传感非常重要。SSPP的动量匹配确定共振位置,间隙距离确定振幅。对于生物分子感测,将样品放置在棱镜底座和SSPPs结构之间。当前研究中的动量匹配条件没有考虑样品折射率的影响,并且共振位置具有明显的误差。在此,对考虑样品折射率的影响的动量匹配条件进行校正。对基于频率和角度变化的表面等离子体共振(SPR)感应性能的比较研究表明,频率区域的感应灵敏度优于角度区域。同时,作为生物传感器的一种应用,我们已经在频率范围内检测到了不同类型的脑部病变。此外,反射幅度与棱镜和SSPP之间的间隙大小有关。研究了间隙尺寸与反射幅度的关系。通过使用间隙大小和反射幅度之间的关系,与其他已发表的结果相比,不同折射率的不同频率或入射角的幅度具有相同的反射倾角。进行了仿真,结果证明了该理论。作为生物传感器的一种应用,我们已经在频率范围内检测到了不同类型的脑部病变。此外,反射幅度与棱镜和SSPP之间的间隙大小有关。研究了间隙尺寸与反射幅度的关系。通过使用间隙大小和反射幅度之间的关系,与其他已发表的结果相比,不同折射率的不同频率或入射角的幅度具有相同的反射倾角。进行了仿真,结果证明了该理论。作为生物传感器的一种应用,我们已经在频率范围内检测到了不同类型的脑部病变。此外,反射幅度与棱镜和SSPP之间的间隙大小有关。研究了间隙尺寸与反射幅度的关系。通过使用间隙大小和反射幅度之间的关系,与其他已发表的结果相比,不同折射率的不同频率或入射角的幅度具有相同的反射倾角。进行了仿真,结果证明了该理论。通过使用间隙大小和反射幅度之间的关系,与其他已发表的结果相比,不同折射率的不同频率或入射角的幅度具有相同的反射倾角。进行了仿真,结果证明了该理论。通过使用间隙大小和反射幅度之间的关系,与其他已发表的结果相比,不同折射率的不同频率或入射角的幅度具有相同的反射倾角。进行了仿真,结果证明了该理论。
更新日期:2020-11-12
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