scholarly journals Nanoparticle embedded double-layer coating for daytime radiative cooling

2017 ◽  
Vol 104 ◽  
pp. 890-896 ◽  
Author(s):  
Zhifeng Huang ◽  
Xiulin Ruan
Keyword(s):  
Double Layer ◽  
Radiative Cooling ◽  
Layer Coating

scholarly journals Simple Double-Layer Coating for Efficient Daytime and Nighttime Radiative Cooling

Atmosphere ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 1198
Author(s):  
Mourad Benlattar ◽  
Issam Ibourk ◽  
Rahma Adhiri
Keyword(s):  
Double Layer ◽  
Large Scale ◽  
Outer Space ◽  
Solar Spectrum ◽  
Bottom Layer ◽  
Solar Irradiation ◽  
Radiative Cooling ◽  
Atmospheric Window ◽  
Thermal Emitters ◽  
Layer Coating

The passive radiative cooling approach refers to the physical process that pumps heat into outer space via the atmospheric window (8–13 μm) without energy input. The ability to continuously adjust the emissivity of thermal emitters in the sky window while maintaining high reflectivity in the solar spectrum remains a challenge. In order to achieve this task, a novel design referred to as double-layer nanoparticle-based coating is proposed. Our proposed emitter is appropriate for both high solar reflection and strong mid-infrared emissivity. The bottom and top layers are Al2O3 embedded with Ni nanoparticles and a super-hydrophilic TiO2-SiO2 layer. The bottom layer is designed to achieve high emissivity in “the atmospheric transparency window”. The top layer is designed to block solar illumination and to favor an enhanced cleanability of the coated design. Our double-layer coating as an optical solar reflector has excellent solar irradiation ( and is strongly emissive (0.97) across the “full sky window” at room temperature. Furthermore, a detailed numerical energy study has been performed, evaluating the temperature reduction and the radiative cooling performance under different conditions. The proposed simple coating can be used as an efficient radiative cooler on a large scale for energy conservation and thermoelectric devices.

PAN/PI functional double-layer coating for dendrite-free lithium metal anodes

2020 ◽  
Vol 8 (13) ◽  
pp. 6183-6189 ◽  
Author(s):  
Fei Shen ◽  
Kaiming Wang ◽  
Yuting Yin ◽  
Le Shi ◽  
Dingyuan Zeng ◽  
...  
Keyword(s):  
Double Layer ◽  
Lithium Metal ◽  
Functional Layer ◽  
Pan Fiber ◽  
Lithium Metal Anodes ◽  
Layer Coating ◽  
Metal Anodes

A PAN fiber/PI sphere double-layer coating serves as an interfacial functional layer to guide uniform Li deposition.

scholarly journals Effects of Fe-P Upper Layer Coating Weight on Paintability and Corrosion Resistance of Double Layer Alloy Coated Steel Sheets

1986 ◽  
Vol 72 (8) ◽  
pp. 976-983 ◽  
Author(s):  
Toru HONJO ◽  
Kazuaki KYONO ◽  
Koji YAMATO ◽  
Toshio ICHIDA ◽  
Toshio IRIE
Keyword(s):  
Corrosion Resistance ◽  
Double Layer ◽  
Coated Steel ◽  
Steel Sheets ◽  
Coating Weight ◽  
Layer Coating

Analytic Study of Non-Newtonian Double Layer Coating Liquid Flows in Optical Fiber Manufacturing

2012 ◽  
Vol 224 ◽  
pp. 260-263 ◽  
Author(s):  
Kyoung Jin Kim ◽  
Ho Sang Kwak
Keyword(s):  
Optical Fiber ◽  
Glass Fiber ◽  
Double Layer ◽  
Optical Fibers ◽  
Newtonian Fluid ◽  
Liquid Flow ◽  
Analytic Study ◽  
Fiber Drawing ◽  
Drawing Speed ◽  
Layer Coating

In mass manufacturing of optical fibers, the wet-on-wet polymer resin coating is an efficient process for applying double layer coatings on the glass fiber. This paper presents an analytic study on the behavior of non-Newtonian polymer resins in the double layer coating liquid flow inside a secondary coating die of the optical fiber coating applicator. Based the approximations of fully developed laminar flow and the power law model of non-Newtonian fluid, the coating liquid flow of two immiscible resin layers is modeled for the simplified geometry of capillary annulus, where the surface of glass fiber moves at high fiber drawing speed. The effects of important parameters such as non-Newtonian fluid properties, the coating die size, and fiber drawing speed are investigated on the resin velocity profiles and secondary coating layer thickness.

Electrolytic Al2O3/Y2O3 double-layer coating on IN617 superalloy

2006 ◽  
Vol 200 (22-23) ◽  
pp. 6611-6617 ◽  
Author(s):  
C.T. Hsu ◽  
C.C. Chang ◽  
T.N. Chang ◽  
S.K. Yen
Keyword(s):  
Double Layer ◽  
Layer Coating
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