Wearable Janus‐Type Film with Integrated All‐Season Active/Passive Thermal Management, Thermal Camouflage, and Ultra‐High Electromagnetic Shielding Efficiency Tunable by Origami Process

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 8, 2023

Abstract Multifunctional films with integrated temperature adjustment, electromagnetic interference (EMI) shielding, and thermal camouflage are remarkably desirable for wearable products. Herein, a novel Janus‐type multifunctional ultra‐flexible film is fabricated via continuous electrospinning followed by spraying. Interestingly, in the polyvinyl alcohol (PVA)/phase change capsules (PCC) layer (P 1 ), PCC strung on PVA fibers to form stable “candied haws stick” structure that obviates slipping or falling off. The sufficient melting enthalpy (141.4 J g −1 ) guarantees its thermoregulation capability. Simultaneously, high mid‐IR emissivity (90.15%) endows radiative cooling properties (reducing 10.13 °C). Mechanical strength significantly improved superimposing polylactic acid (PLA) 2 surface. By spraying thin MXene PLA surface of P film, obtained (MXene/P MP endowed satisfactory low‐voltage heating, photo‐thermal superior performance, achieving all‐season comfort. Impressively, flexible achieves enhanced EMI shielding effect from 50.3 87.8 dB through simple origami process, which simplifies manufacturing process high‐performance materials. In brief, an attractive candidate future products personalized management anti‐electromagnetic radiation.

Language: Английский

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An all-weather radiative human body cooling textile

Nature Sustainability, Journal Year: 2023, Volume and Issue: 6(11), P. 1446 - 1454

Published: Aug. 14, 2023

Language: Английский

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Photonic structures in radiative cooling

Light Science & Applications, Journal Year: 2023, Volume and Issue: 12(1)

Published: June 1, 2023

Radiative cooling is a passive technology without any energy consumption, compared to conventional technologies that require power sources and dump waste heat into the surroundings. For decades, many radiative studies have been introduced but its applications are mostly restricted nighttime use only. Recently, emergence of photonic achieves daytime overcome performance limitations. example, broadband selective emissions in mid-IR high reflectance solar spectral range already demonstrated. This review article discusses fundamentals thermodynamic transfer motivates cooling. Several structures such as multilayer, periodical, random; derived from nature, associated design procedures were thoroughly discussed. Photonic integration with new functionality significantly enhances efficiency colored, transparent, switchable has developed. The commercial reducing loads vehicles, increasing generation cells, generating electricity, saving water, personal thermal regulation also summarized. Lastly, perspectives on emerging issues potential solution strategies

Language: Английский

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Infrared radiative modulating textiles for personal thermal management: principle, design and application

Nano Energy, Journal Year: 2023, Volume and Issue: 116, P. 108821 - 108821

Published: Aug. 24, 2023

Language: Английский

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Advances in photothermal regulation strategies: from efficient solar heating to daytime passive cooling

Chemical Society Reviews, Journal Year: 2023, Volume and Issue: 52(21), P. 7389 - 7460

Published: Jan. 1, 2023

This review provides a comprehensive overview of photothermal regulation strategies from fundamentals, criteria, and advanced materials to emerging applications.

Language: Английский

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A trimode textile designed with hierarchical core-shell nanofiber structure for all-weather radiative personal thermal management

Nano Today, Journal Year: 2023, Volume and Issue: 51, P. 101897 - 101897

Published: June 6, 2023

Language: Английский

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Nature‐Inspired Solar‐Thermal Gradient Reduced Graphene Oxide Aerogel‐based Bilayer Phase Change Composites for Self‐Adaptive Personal Thermal Management

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(15)

Published: Jan. 24, 2023

Abstract Although personal thermal management (PTM) materials for daily routine environments are widely investigated, the exploration of multifunctional PTM with excellent feasibility in complex and outdoor scenarios is still its infancy. Herein, inspired by temperature regulation effect atmosphere, a novel design fabricating solar‐thermal gradient reduced graphene oxide (RGO) aerogel‐based bilayer phase change composite (GRGC) featuring “energy regulation” inverse compensation” proposed self‐adaptive applications. By integrating energy conversion ability RGO, heat aerogel/octadecane structure unique RGO framework inside, latent‐heat compensation octadecane, GRGC can serve as an efficient device to mitigate drastic changes human skin harsh environments. This not only keep warm surface microclimate frigid environment −5 °C via synergistic conversion, aerogel insulation, phase‐change latent release, but also provide buffering prevent hyperthermia hot through behavior insulation. opens new avenue devices applications

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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Strain-adjustable reflectivity of polyurethane nanofiber membrane for thermal management applications

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 461, P. 142095 - 142095

Published: Feb. 23, 2023

Language: Английский

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A Novel BST@TPU Membrane with Superior UV Durability for Highly Efficient Daytime Radiative Cooling

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(23)

Published: Feb. 12, 2024

Abstract Passive radiative cooling technologies play an integral role in advancing sustainable development. While the potential of polymer‐based materials is increasingly recognized, they often degrade under prolonged ultraviolet (UV) radiation exposure, which undermines both their mechanical and performance. To address this challenge, a coaxial electrospinning method to prepare BST@TPU membrane, with core layer strontium barium titanate nanorods (BST NRs) shell thermoplastic polyurethane (TPU) employed. Capitalizing on UV absorption free radical adsorption properties BST NRs, stability TPU membrane significantly increased. Additionally, inclusion high refractive index NRs compensates for decrease reflectivity caused by absorption. After 216 h continuous 0.7 kW m −2 irradiation, initially exhibits reflectance 97.2%, demonstrated modest decline 92.1%. Its net power maintains 85.78 W from initial 125.21 , extending useful lifetime threefold. This innovation extends promise enhancing efficiency durability materials, contributing solutions across various applications.

Language: Английский

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