Journal Article10.1007/S00339-018-2310-1
A broadband plasmonic light absorber based on a tungsten meander-ring-resonator in visible region
Can Cao,Yongzhi Cheng +1 more
55
TL;DR: In this article, a broadband plasmonic light absorber (PLA) based on a tungsten meander-ring-resonator (MRR) structure in visible region is presented.
read more
Abstract: We present the design and numerical simulations of a broadband plasmonic light absorber (PLA) based on a tungsten meander-ring-resonator (MRR) structure in visible region. The proposed PLA is composed of a periodic MRR array and a continuous tungsten (W) film separated by a dielectric substrate. Simulation results indicate that the absorbance of our PLA is up to 99.9% at 538 THz, and it is over 90% from 370 to 854 THz across the whole visible region. The simulated electric field distributions reveal that the stronger broadband absorption is caused by the excitation of localized surface plasmon (LSP), propagating surface plasmon (PSP) and guide mode resonances. Further simulation indicates that designed PLA is polarization insensitive and has a wide angle for both transverse electric (TE) and transverse magnetic (TM) modes. In addition, the impact of the geometric parameters of the designed PLA on the absorption spectrum was also studied systematically. Owing to its superior performance, the proposed PLA based on tungsten MRR can be a potential application in thermal imaging, emissivity control and solar energy harvesting.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Reconfigurable Optical Heptamer Disk Absorber Based on an Optical Switch
TL;DR: In this article, the authors exploited an organic material layer for new applications in optical absorbers and employed a heptamer disk array as unit cell, with each disk comprising an organic and a gold layer, and controlled the conductivity of the organic material by biasing the gold electrode.
Polarization-Independent Broadband Optical Regime Metamaterial Absorber for Solar Harvesting: A Numerical Approach
Ismail Hossain,Samsuzzaman,Moniruzzaman,Badariah Bais,Mandeep Singh Jit Singh,Mohammad Tariqul Islam +5 more
TL;DR: In this article, a broadband metamaterial (MTM) absorber was proposed that exhibits near-unity absorption in the terahertz regime, where the resonator is designed with a square ring loaded with a face-to-face E structure at the center.
Polarization-insensitive infrared-visible perfect metamaterial absorber and permittivity sensor
Mohammad Jakir Hossain,Mohammad Rashed Iqbal Faruque,Md. Raju Ahmed,Md. Jubaer Alam,Mohammad Tariqul Islam +4 more
TL;DR: In this article, a multi-circular ring perfect metamaterial absorber (PMA) with unity solar energy absorption in the infrared and visible frequency ranges is proposed, which can be used for renewable solar energy harvesting as well as for stealth technology, sensing, and imaging applications.
Numerical investigation of wideband L-shaped metasurface based solar absorber for visible and ultraviolet region
Shreyas Charola,Shobhit K. Patel,Krishna Dalsaniya,Rajendrasinh Jadeja,Truong Khang Nguyen,Vigneswaran Dhasarathan +5 more
TL;DR: In this paper, a wideband metasurface absorber covering the visible to ultraviolet (UV) region (340 to 1150 THz) is numerically presented, which achieves an efficiency of 92.2% in the visible spectra (430 THz to 770THz) and 73.6% absorption in the ultraviolet spectrum (771 THRz to 1100 THz).
References
Plasmonics for improved photovoltaic devices
Harry A. Atwater,Albert Polman +1 more
TL;DR: Recent advances at the intersection of plasmonics and photovoltaics are surveyed and an outlook on the future of solar cells based on these principles is offered.
8.7K
Nano-optics of surface plasmon polaritons
TL;DR: A surface plasmon polariton (SPP) is an electromagnetic excitation existing on the surface of a good metal, whose electromagnetic field decays exponentially with distance from the surface.
2.5K
Optical properties of the metals Al, Co, Cu, Au, Fe, Pb, Ni, Pd, Pt, Ag, Ti, and W in the infrared and far infrared
TL;DR: The data for the noble metals and Al, Pb, and W can be reasonably fit using the Drude model and it is shown that -epsilon1(omegas) = epsilon2(omega) approximately omega(2)(p)/(2omega( 2)(tau) at the damping frequency omega = omega(tau), where the plasma frequency is omega(p).
High performance optical absorber based on a plasmonic metamaterial
TL;DR: In this article, an ultrathin, wide-angle, subwavelength high performance metamaterial absorber for optical frequencies is presented. But the experimental results show that an absorption peak of 88% is achieved at the wavelength of ∼1.58μm, though theoretical results give near perfect absorption.
1.2K
Ultrabroadband light absorption by a sawtooth anisotropic metamaterial slab
Yanxia Cui,Kin Hung Fung,Kin Hung Fung,Jun Xu,Jun Xu,Hyungjin Ma,Yi Jin,Sailing He,Nicholas X. Fang,Nicholas X. Fang +9 more
TL;DR: An ultrabroadband thin-film infrared absorber made of sawtoothed anisotropic metamaterial waveguide that can be applied in the field of designing photovoltaic devices and thermal emitters.