Journal ArticleDOI
Broadband metamaterial as an “invisible” radiative cooling coat
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TLDR
In this paper, the authors proposed a planar device in infrared (3 - 12 μ m ) that has a high emission range from 5 μ m to 8 μ m while simultaneously serving as a broadband mirror for the rest wavelengths by engineering its thermal emission characteristics.About:
This article is published in Optics Communications.The article was published on 2018-01-15. It has received 56 citations till now. The article focuses on the topics: Radiative cooling.read more
Citations
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Radiative cooling: A review of fundamentals, materials, applications, and prospects
TL;DR: In this article, the current state of the art in passive radiative cooling technology is reviewed and updated, and the advanced materials and structures of various radiators, which are popular topics in radiative heating, are presented.
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A Multilayer Film Based Selective Thermal Emitter for Infrared Stealth Technology
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Catenary Electromagnetics for Ultra-Broadband Lightweight Absorbers and Large-Scale Flat Antennas.
TL;DR: By properly engineering the catenary electromagnetic fields and frequency dispersion, lightweight metafilm‐based broadband absorbers with polarization‐independent bandwidth covering 0.65–6.2 GHz are experimentally achieved, and the bandwidth is further broadened to 0.9–40 GHz.
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Review of radiative cooling materials: Performance evaluation and design approaches
Xinxian Yu,Jiaqi Chan,Chun Chen +2 more
TL;DR: In this paper, the authors gathered information on 55 radiative cooling materials reported in the literature according to their selection criteria and grouped them into four categories: multilayer structure, metamaterial, randomly distributed particle structure, and porous structure.
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Radiative cooling: Fundamental physics, atmospheric influences, materials and structural engineering, applications and beyond
TL;DR: In this paper, the authors provide guidance towards integration of radiative coolers with functional devices for both academic researchers and engineers in the fields of energy harvesting, fluidic cooling, energy efficient clothing, and architecture.
References
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Journal ArticleDOI
Controlling Electromagnetic Fields
TL;DR: This work shows how electromagnetic fields can be redirected at will and proposes a design strategy that has relevance to exotic lens design and to the cloaking of objects from electromagnetic fields.
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Infrared Perfect Absorber and Its Application As Plasmonic Sensor
TL;DR: A perfect plasmonic absorber is experimentally demonstrated at lambda = 1.6 microm, its polarization-independent absorbance is 99% at normal incidence and remains very high over a wide angular range of incidence around +/-80 degrees.
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Passive radiative cooling below ambient air temperature under direct sunlight
TL;DR: An integrated photonic solar reflector and thermal emitter consisting of seven layers of HfO2 and SiO2 that reflects 97 per cent of incident sunlight while emitting strongly and selectively in the atmospheric transparency window demonstrates that the cold darkness of the Universe can be used as a renewable thermodynamic resource, even during the hottest hours of the day.
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Taming the blackbody with infrared metamaterials as selective thermal emitters.
Xianliang Liu,Talmage Tyler,Tatiana Starr,Anthony F. Starr,Nan Marie Jokerst,Willie J. Padilla +5 more
TL;DR: This Letter demonstrates, for the first time, selective thermal emitters based on metamaterial perfect absorbers and finds that emissivity and absorptivity agree very well as predicted by Kirchhoff's law of thermal radiation.
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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.