Numerical investigation of a narrowband absorber with a simple structure
Numerical investigation of a narrowband absorber with a simple structure
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DOI：
10.1364/osac.412046
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发表时间：
2020-12
期刊：
影响因子：
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通讯作者：
Akanksha Ninawe;A. Dhawan;Xianfan Xu
中科院分区：
文献类型：
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作者：
Akanksha Ninawe;A. Dhawan;Xianfan Xu
我们提出了一种简单的超材料（MM）结构，以实现近乎完美的窄带吸收。该MM利用等离子体天线及其互补结构来捕获电磁场，与传统设计相比，不使用完整的接地板。这种简单的设计开辟了一种新的可能性，可以很容易地制造工程完美的吸收器，因此在中红外许多潜在的应用包括热成像，能量收集，局部生物传感，光镊和激光束整形。
We propose a simple structure of a metamaterial (MM) to achieve near-perfect narrowband absorption. This MM utilizes both a plasmonic antenna and its complimentary structure for trapping electromagnetic fields, without the use of a complete ground plate compared to conventional designs. The simple design opens a new possibility of engineering perfect absorbers that can be easily fabricated, and thus many potential applications in mid-infrared include thermal imaging, energy harvesting, localized biological sensing, optical tweezers, and laser beam shaping.