“Warm in Winter and Cool in Summer”: Scalable Biochameleon Inspired Temperature-Adaptive Coating with Easy Preparation and Construction

Nano Letters, Journal Year: 2023, Volume and Issue: 23(19), P. 9034 - 9041

Published: Sept. 20, 2023

The highly reflective solar radiation of passive daytime radiative cooling (PDRC) increases heating energy consumption in the cold winter. Inspired by temperature-adaptive skin color chameleon, we efficiently combine absorption and PDRC technology to achieve "warm winter cool summer". coating (TARCC) with variability is designed fabricated, achieving 41% visible light regulation capability. Comprehensive seasonal outdoor tests confirm reliability TARCC: summer, TARCC exhibits high reflectance (∼93%) atmospheric transmission window emittance (∼94%), resulting a 6.5 K subambient temperature. In winter, TARCC's dark strongly absorbs radiation, 4.3 temperature rise. Compared coatings, can save up 20% annual midlatitude regions increase suitable human hours 55%. With its low cost, easy preparation, simple construction, shows promise for sustainable comfortable indoor environments.

Language: Английский

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Materials in Radiative Cooling Technologies

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: March 18, 2024

Abstract Radiative cooling (RC) is a carbon‐neutral technology that utilizes thermal radiation to dissipate heat from the Earth's surface cold outer space. Research in field of RC has garnered increasing interest both academia and industry due its potential drive sustainable economic environmental benefits human society by reducing energy consumption greenhouse gas emissions conventional systems. Materials innovation key fully exploit RC. This review aims elucidate materials development with focus on design strategy including their intrinsic properties, structural formations, performance improvement. The main types materials, i.e., static‐homogeneous, static‐composite, dynamic, multifunctional are systematically overviewed. Future trends, possible challenges, solutions presented perspectives concluding part, aiming provide roadmap for future advanced materials.

Language: Английский

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Passive daytime radiative cooling materials toward real-world applications

Progress in Materials Science, Journal Year: 2024, Volume and Issue: 144, P. 101276 - 101276

Published: March 8, 2024

Language: Английский

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Scalable Bio-Skin-Inspired Radiative Cooling Metafabric for Breaking Trade-Off between Optical Properties and Application Requirements

ACS Photonics, Journal Year: 2023, Volume and Issue: 10(5), P. 1624 - 1632

Published: April 17, 2023

Passive daytime radiative cooling (PDRC) provides a zero-energy technology to reduce the global fossil energy consumption and has already attracted tremendous interest. However, breaking trade-off between pursuit of ultrahigh dual-band (solar atmospheric window) optical properties compatibility multiple functional requirements by application is still big challenge for PDRC. By introducing photon slab-porous effect with strong sunlight backward scattering inspired human skin (epidermis dermis) recorded medical infrared emittance multi-functions, we proposed an efficient property design strategy Through simple scalable dip dyeing process, fabricated bio-skin-inspired PDRC metafabric exhibited superior properties, while both solar reflectance window can reach 97%. Outdoor tests demonstrated that bio-PDRC achieved maximum sub-ambient temperature drop 12.6 °C in daytime. A wearing hat made be 16.6 cooler than one common hat. The also performance breathability, waterproofness, flexibility, strength, durability fulfill demands personal thermal management, vents, car covers.

Language: Английский

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Multi-bioinspired flexible thermal emitters for all-day radiative cooling and wearable self-powered thermoelectric generation

Nano Energy, Journal Year: 2024, Volume and Issue: 123, P. 109393 - 109393

Published: Feb. 13, 2024

Language: Английский

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Biological optics, photonics and bioinspired radiative cooling

Progress in Materials Science, Journal Year: 2024, Volume and Issue: 144, P. 101291 - 101291

Published: April 4, 2024

Language: Английский

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Adaptive Thermal Management Radiative Cooling Smart Window with Perfect Near‐Infrared Shielding

Small, Journal Year: 2024, Volume and Issue: 20(30)

Published: Feb. 25, 2024

Abstract The architectural window with spectrally selective features and radiative cooling is an effective way to save building energy consumption. However, windows that combine both functions are currently based on micro‐nano photonic structures, which undoubtedly hinder their commercial application due the complexity of manufacture. Herein, a novel tunable visible light transmittance smart (TTRC window) perfect near‐infrared (NIR) shielding ability manufactured via mass‐producible scraping method. TTRC presents high luminous ( T lum = 56.8%), NIR 3.4%), bidirectional transparency adjustment unavailable in other transparent coolers structures (Δ 54.2%), emittance atmospheric (over 94%). Outdoor measurements confirm can reduce 8.2 6.6 °C, respectively, compared ordinary glass indium tin oxide (ITO) glass. Moreover, over 20% annual tropics ITO simple preparation method employed this work superior optical properties have significantly broadened scope advanced commercialization windows.

Language: Английский

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Radiative cooling: structure design and application

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(17), P. 9962 - 9978

Published: Jan. 1, 2024

This paper provides a comprehensive overview of radiative cooling technology, covering its basic principles, various design structures, and potential applications.

Language: Английский

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Ultrahigh Visible-Transparency, Submicrometer, and Polymer-Free Radiative Cooling Meta-Glass Coating for Building Energy Saving

ACS Photonics, Journal Year: 2024, Volume and Issue: 11(8), P. 3412 - 3423

Published: July 11, 2024

Language: Английский

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Introducing masking layer for daytime radiative cooling coating to realize high optical performance, thin thickness, and excellent durability in long-term outdoor application

Applied Energy, Journal Year: 2023, Volume and Issue: 344, P. 121273 - 121273

Published: May 17, 2023

Language: Английский

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