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High-temperature ul...
High-temperature ultra-broad UV–MIR high-efficiency absorber based on double ring-shaped titanium nitride resonators
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- Cao, Shun (author)
- Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang University, Hangzhou 310058, China
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- Jin, Yi (author)
- Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang University, Hangzhou 310058, China
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- Dong, Hongguang (author)
- Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang University, Hangzhou 310058, China
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- Guo, Tingbiao (author)
- Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang University, Hangzhou 310058, China
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Liu, Zhenciao (author)
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- He, Jinlong (author)
- College of Modern Science and Technology, China Jiliang University, Hangzhou, 310018, China
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- He, Sailing (author)
- KTH,Elektroteknisk teori och konstruktion,Centre for Optical and Electromagnetic Research, National Engineering Research Center for Optical Instruments, Zhejiang University, Hangzhou 310058, China b Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
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(creator_code:org_t)
- Elsevier B.V. 2021
- 2021
- English.
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In: Optics Communications. - : Elsevier B.V.. - 0030-4018 .- 1873-0310. ; 485
- Related links:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- An ultrabroad absorber based on double-ring-shaped titanium nitride (TiN) nanoresonators, which can work in high temperatures, is proposed and numerically studied. The absorber with some optimal parameters exhibits an averaged absorption of 94.6% in the range of 200–4000 nm (from ultraviolet to mid-infrared) and a band from 200–3518 nm having an absorption > 90%. We have demonstrated in detail the physical mechanisms of the ultra-broad absorption, including the dielectric lossy property of TiN material itself in shorter wavelengths and plasmonic resonances caused by the metallic property of TiN nano-resonators in longer wavelengths. In addition, the absorber shows polarization independent and wide-angle acceptance. Another absorber with double TiN nano-rings of different heights has flatter and higher absorption efficiency (more than 95% absorption) at 200–2860 nm waveband. These properties make the proposed absorbers based on TiN has great potentials in many applications, such as light trapping, photovoltaics, thermal emitters.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Keyword
- Metamaterials
- Titanium nitride
- Ultra-broad absorber
- Ultraviolet to mid-infrared
- Efficiency
- Nanorings
- Resonators
- Absorption efficiency
- Broad absorptions
- Different heights
- Metallic properties
- Physical mechanism
- Plasmonic resonances
- Polarization independent
- Shorter wavelength
Publication and Content Type
- ref (subject category)
- art (subject category)
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