Broadband LWIR and MWIR metamaterial absorbers with a simple design topology: almost perfect absorption and super-octave band operation in MWIR band

Üstün, Kadir; Turhan‐Sayan, Gönül

doi:10.1364/josab.34.000d86

Cited by 21 publications

(11 citation statements)

References 42 publications

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“…The strategies of multi-band and broadband absorption are classified into three groups: asymmetrically-shaped [ 47 , 52 , 85 , 86 , 87 , 88 , 89 ] or multi-size [ 42 , 65 , 66 , 90 , 91 , 92 , 93 , 94 ] micropatches, multi-layers of MIM structure [ 95 , 96 , 97 , 98 , 99 , 100 ], and embedded in dielectric materials [ 57 , 101 , 102 ]. The first two are based on multi-resonance that produces multi-mode absorption.…”

Section: Multi-band and Broadband Operationmentioning

confidence: 99%

Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

2018

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Electromagnetic wave absorbers have been investigated for many years with the aim of achieving high absorbance and tunability of both the absorption wavelength and the operation mode by geometrical control, small and thin absorber volume, and simple fabrication. There is particular interest in metal-insulator-metal-based plasmonic metamaterial absorbers (MIM-PMAs) due to their complete fulfillment of these demands. MIM-PMAs consist of top periodic micropatches, a middle dielectric layer, and a bottom reflector layer to generate strong localized surface plasmon resonance at absorption wavelengths. In particular, in the visible and infrared (IR) wavelength regions, a wide range of applications is expected, such as solar cells, refractive index sensors, optical camouflage, cloaking, optical switches, color pixels, thermal IR sensors, IR microscopy and gas sensing. The promising properties of MIM-PMAs are attributed to the simple plasmonic resonance localized at the top micropatch resonators formed by the MIMs. Here, various types of MIM-PMAs are reviewed in terms of their historical background, basic physics, operation mode design, and future challenges to clarify their underlying basic design principles and introduce various applications. The principles presented in this review paper can be applied to other wavelength regions such as the ultraviolet, terahertz, and microwave regions.

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Section: Multi-band and Broadband Operationmentioning

confidence: 99%

Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

2018

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“…A simple structure is important for the commercialization of radiative cooling [52,53]. Zou et al [54] demonstrated the simplest radiative cooling structure which consists of a two layered metasurface (Figure 3f).…”

Section: Metamaterial-based Radiative Cooling Using Nanostructuresmentioning

confidence: 99%

Metamaterial-Based Radiative Cooling: Towards Energy-Free All-Day Cooling

Lee

Badloe

et al. 2018

Energies

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In the light of the ever increasing dangers of global warming, the efforts to reduce energy consumption by radiative cooling techniques have been designed, but are inefficient under strong sunlight during the daytime. With the advent of metamaterials and their selective control over optical properties, radiative cooling under direct sunlight is now possible. The key principles of metamaterial-based radiative cooling are: almost perfect reflection in the visible and near-infrared spectrum (0.3–3 µm) and high thermal emission in the infrared atmospheric window region (8–13 µm). Based on these two basic principles, studies have been conducted using various materials and structures to find the most efficient radiative cooling system. In this review, we analyze the materials and structures being used for radiative cooling, and suggest the future perspectives as a substitute in the current cooling industry.

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“…Using active components [ 26 , 27 ] such as diodes can improve bandwidth and absorption but some defense applications require the least possible external electronic sources. Some recent works [ 28 , 29 ] have shown that broadband absorption using simple shapes of resonating elements can be achieved but the use of materials such as Titanium, Tin Oxide or complicated fabrication processes makes the absorbers more costly. Replacing the metallic resonating elements by well designed resistive sheets [ 30 ] can provide broadband absorption but depending on the values (Ω/ Square ) it is sometimes very difficult to manufacture them due to limited technology.…”

Section: Introductionmentioning

confidence: 99%

A Co-Polarization Broadband Radar Absorber for RCS Reduction

Beeharry

Yahiaoui

Selemani³

et al. 2018

Materials

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In this article, a single layer co-polarization broadband radar absorber is presented. Under normal incidence, it achieves at least 90% of absorption from 5.6 GHz to 9.1 GHz for both Transverse Electric (TE) and Transverse Magnetic (TM) polarizations. Our contribution and the challenge of this work is to achieve broadband absorption using a very thin single layer dielectric and it is achieved by rotating the resonating element by 45°. An original optimized Underlined U shape has been developed for the resonating element which provides a broadband co-polarization absorption. The structure is 12.7 times thinner than the wavelength at the center frequency. To understand the absorption mechanism, the transmission line model of an absorber and the three near unity absorption peaks at 5.87 GHz, 7.16 GHz and 8.82 GHz have been used to study the electric and magnetic fields. The physical insight of how the three near unity absorption peaks are achieved has also been discussed. After fabricating the structure, the measurements were found to be in good agreement with the simulation results. Furthermore, with the proposed original UUSR resonating element, the operational bandwidth to thickness ratio of 6.43 is obtained making the proposed UUSR very competitive.

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Broadband LWIR and MWIR metamaterial absorbers with a simple design topology: almost perfect absorption and super-octave band operation in MWIR band

Cited by 21 publications

References 42 publications

Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

Metal-Insulator-Metal-Based Plasmonic Metamaterial Absorbers at Visible and Infrared Wavelengths: A Review

Metamaterial-Based Radiative Cooling: Towards Energy-Free All-Day Cooling

A Co-Polarization Broadband Radar Absorber for RCS Reduction

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