Silicon-Based Plasmonic Nanoantennas at mid-infrared for Gas Sensing Applications
Silicon-Based Plasmonic Nanoantennas at mid-infrared for Gas Sensing Applications
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用于气体传感应用的中红外硅基等离子体纳米天线
DOI：
10.1109/nusod54938.2022.9894792
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
M. Swillam
中科院分区：
文献类型：
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作者：
Ahmad E. Alsayed;A. Ghanim;A. Yahia;M. Swillam
先进的纳米技术，特别是CMOS技术，使我们能够重新设计纳米尺度的经典天线，它可以将传播的光波长而不是无线电和微波波长转换为局部能量，反之亦然。因此，传感器可以被设计成使具有其特征振动跃迁的传感分子更容易。在这项工作中的蝴蝶结硅纳米天线进行了研究。当使用具有高过量载流子浓度的硅作为所选材料时，增强发生在中红外（MIR）光谱范围内，当与使用金或银时产生的增强相比时，其发生红移。改变衬底材料和相关的谐振波长会影响局部电场。
Advanced nanotechnology especially CMOS technology-enables us to re-design the classic antenna in the nanoscale, which can convert propagating optical wavelengths instead of radio and microwave wavelengths into localized energy and vice versa. As a result, sensors may be designed to make sensing molecules with their characteristic vibrational transitions easier. Bowtie silicon nanoantennas are investigated in this work. When silicon with high excess carrier concentrations is used as the material of choice, the enhancement occurs in the mid-IR (MIR) spectral range, which is red-shifted when compared to the enhancement produced when gold or silver is used. Varying the substrate material and associated resonance wavelength influences the localized electric field.