The design of ultra-broadband selective near-perfect absorber based on photonic structures to achieve near-ideal daytime radiative cooling

Wu, Dong; Liu, Chang; Xu, Zenghui; Liu, Yumin; Yu, Zhongyuan; Yu, Li; Chen, Lei; Li, Ruifang; Ma, Rui; Ye, Han

doi:10.1016/j.matdes.2017.10.077

Cited by 188 publications

(85 citation statements)

References 36 publications

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“…Lu et al [65] applied a unique fabrication method of modified silica sol-gel imprinting, which makes it possible to increase the durability of the device for real-life applications (Figure 4d) with an average emissivity measured to be greater than 96% in the atmospheric window region. This [41], (b) photonic crystal structure [42], (c) conical shape array [43], (d,e) antenna structures [30,48], (f-h) metasurfaces [54][55][56], (i,j) gratings [57,59], and (k) sphere arrays [60] have been reported.…”

Section: Metamaterial-based Radiative Cooling Using Random Particlesmentioning

confidence: 95%

“…As a result, a reduction of 12.2 • C below the ambient temperature under direct sunlight was achieved. Wu et al [48] followed up this research by designing two-dimensional antenna composed of a low-loss alternating aluminum oxide (Al 2 O 3 ) and SiO 2 multi-layer structure (Figure 3d). This exhibits near ideal unity IR emissivity and solar reflection.…”

Section: Metamaterial-based Radiative Cooling Using Nanostructuresmentioning

confidence: 99%

“…If the metallic nanoparticle crystal can be properly oxidized, a natural dielectric layer can be formed which results in an enhancement of the selective emission in the atmospheric window. [42], (c) conical shape array [43], (d,e) antenna structures [48,30], (f-h) metasurfaces [54][55][56], (i,j) gratings [57,59], and (k) sphere arrays [60] have been reported.…”

Section: Metamaterial-based Radiative Cooling Using Nanostructuresmentioning

confidence: 99%

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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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Section: Metamaterial-based Radiative Cooling Using Random Particlesmentioning

confidence: 95%

Section: Metamaterial-based Radiative Cooling Using Nanostructuresmentioning

confidence: 99%

Section: Metamaterial-based Radiative Cooling Using Nanostructuresmentioning

confidence: 99%

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

Lee

Badloe

et al. 2018

Energies

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“…In [92], a metamaterial structure based on multilayer all dielectric micro-pyramid structure is proposed, as is shown in Figure 3b. The structure was designed to enhance its absorption performance in the atmospheric window compared to single plane photonic devices.…”

Section: Metamaterials and 2d-3d Photonic Structuresmentioning

confidence: 99%

Recent Progress in Daytime Radiative Cooling: Is It the Air Conditioner of the Future?

2018

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Radiative cooling is a well-researched area. For many years, surfaces relying on radiative cooling failed to exhibit a sub-ambient surface temperature under the sun because of the limited reflectance in the solar spectrum and the reduced absorptivity in the atmospheric window. The recent impressive developments in photonic nanoscience permitted to produce photonic structures exhibiting surface temperatures much below the ambient temperature. This paper aims to present and analyze the main recent achievements concerning daytime radiative cooling technologies. While the conventional radiative systems are briefly presented, the emphasis is given on the various photonic radiative structures and mainly the planar thin film radiators, metamaterials, 2 and 3D photonic structures, polymeric photonic technologies, and passive radiators under the form of a paint. The composition of each structure, as well as its experimental or simulated thermal performance, is reported in detail. The main limitations and constraints of the photonic radiative systems, the proposed technological solutions, and the prospects are presented and discussed.

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“…In 2013, Rephaeli et al were the first ones to develop such a material [23,24]. Later on, other materials were developed with similar properties [25][26][27][28][29]. This demonstrates the huge interest and potential of radiative cooling as a renewable technology.…”

Section: Introductionmentioning

confidence: 99%

Combined Radiative Cooling and Solar Thermal Collection: Experimental Proof of Concept

et al. 2020

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Climate change is becoming more important day after day. The main actor to decarbonize the economy is the building stock, especially in the energy used for Domestic Hot Water (DHW), heating and cooling. The use of renewable energy sources to cover space conditioning and DHW demands is growing every year. While solar thermal energy can cover building heating and DHW demands, there is no technology with such potential and development for space cooling. In this paper, a new concept of combining radiative cooling and solar thermal collection, the Radiative Collector and Emitter (RCE), through the idea of an adaptive cover, which uses different material properties for each functionality, is for the first time experimentally tested and proved. The RCE relies on an adaptive cover that uses different material properties for each functionality: high spectral transmittance in the solar radiation band and very low spectral transmittance in the infrared band during solar collection mode, and high spectral transmittance in the atmospheric window wavelength during radiative cooling mode. Experiments were performed during the summer period in Lleida (Dry Mediterranean Continental climate). The concept was proved, demonstrating the potential of the RCE to heat up water during daylight hours and to cool down water during the night. Daily/nightly average efficiencies up to 49% and 32% were achieved for solar collection and radiative cooling, respectively.

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The design of ultra-broadband selective near-perfect absorber based on photonic structures to achieve near-ideal daytime radiative cooling

Cited by 188 publications

References 36 publications

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

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

Recent Progress in Daytime Radiative Cooling: Is It the Air Conditioner of the Future?

Combined Radiative Cooling and Solar Thermal Collection: Experimental Proof of Concept

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