The Design of a Switchable Infrared Hybrid Plasmonic Metasurface Absorber for Energy Harvesting Applications

2021 ◽  
Vol 35 (11) ◽  
pp. 1340-1341
Author(s):  
Ayman Negm ◽  
Mohamed Bakr ◽  
Matiar Howlader ◽  
Shirook Ali
Keyword(s):  
Energy Harvesting ◽  
Optimization Technique ◽  
Dual Band ◽  
Infrared Range ◽  
Modes Of Operation ◽  
Mid Infrared ◽  
Polarization Insensitive ◽  
Switchable Polarization ◽  
Change Material ◽  
Global Optimization Technique

A plasmonic switchable polarization-insensitive metasurface absorber is proposed. The design provides two modes of operation by employing phase-change material in semiconductor and metallic phases. In this paper, we study the switchable absorption behavior of the metasurface operating in a dual-band and single-band modes targeting the mid-infrared range suitable for energy harvesting applications such as thermophotovoltaics. The design is optimized using a global optimization technique.

Graphene-Based Tunable Polarization Insensitive Dual-Band Metamaterial Absorber at Mid-Infrared Frequencies

2015 ◽  
Vol 32 (6) ◽  
pp. 068101 ◽  
Author(s):  
Yu-Ping Zhang ◽  
Tong-Tong Li ◽  
Huan-Huan Lv ◽  
Xiao-Yan Huang ◽  
Xiao Zhang ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Dual Band ◽  
Mid Infrared ◽  
Polarization Insensitive ◽  
Infrared Frequencies

scholarly journals A Tunable Dual-Band and Polarization-Insensitive Coherent Perfect Absorber Based on Double-Layers Graphene Hybrid Waveguide

2019 ◽  
Vol 14 (1) ◽  
Author(s):  
Xin Luo ◽  
Zi-Qiang Cheng ◽  
Xiang Zhai ◽  
Zhi-Min Liu ◽  
Si-Qi Li ◽  
...  
Keyword(s):  
Wide Spectrum ◽  
Dual Band ◽  
Double Layers ◽  
Monolayer Graphene ◽  
Perfect Absorber ◽  
Infrared Band ◽  
Perfect Absorption ◽  
Mid Infrared ◽  
Polarization Insensitive ◽  
Coherent Perfect Absorber

Abstract A suspended monolayer graphene has only about 2.3% absorption rate in visible and infrared band, which limits its optoelectronic applications. To significantly increase graphene’s absorption efficiency, a tunable dual-band and polarization-insensitive coherent perfect absorber (CPA) is proposed in the mid-infrared regime, which contains the silicon array coupled in double-layers graphene waveguide. Based on the FDTD methods, dual-band perfect absorption peaks are achieved in 9611 nm and 9924 nm, respectively. Moreover, due to its center symmetric feature, the proposed absorber also demonstrates polarization-insensitive. Meanwhile, the coherent absorption peaks can be all-optically modulated by altering the relative phase between two reverse incident lights. Furthermore, by manipulating the Fermi energies of two graphene layers, two coherent absorption peaks can move over a wide spectrum range, and our designed CPA can also be changed from dual-band CPA to narrowband CPA. Thus, our results can find some potential applications in the field of developing nanophotonic devices with excellent performance working at the mid-infrared regime.

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