Intelligent Hygroscopic Aerogels: Moisture‐Activated Dual‐Mode Switchable Electromagnetic Response DOI
Gaoyuan Yu, Gaofeng Shao, Yu Chen

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Intelligent electromagnetic materials featuring controllable and adaptive response characteristics play a vital role in managing complex environments. However, effectively modulating the wave responses from transmission to absorption, advancing interference shielding through external stimuli, remains challenging. Herein, novel moisture‐activated dual‐mode switchable pattern is demonstrated hygroscopic lithium chloride@graphene aerogel (LiCl@GA). Benefiting ordered hierarchical structures that accelerate vertically oriented moisture convection, LiCl@GA exhibits ultrahigh water uptake of 4.76 g −1 ultrafast sorption kinetics. This behavior facilitates both absorption during sorption‐desorption processes. The functionality originates moisture‐driven ionic conduction, where absorbs ambient establish highly conductive pathways. From initial state low (0.3 ), maximum change minimum reflection loss reaches −70.03 dB. Furthermore, at high (2 capability with broad modulation range 5.28 21.4 dB cycles. study unveils previously undiscovered mechanisms for reversibly aligned porous aerogels, expanding their potential applications shielding, smart sensors, communication systems.

Language: Английский

Intelligent Hygroscopic Aerogels: Moisture‐Activated Dual‐Mode Switchable Electromagnetic Response DOI
Gaoyuan Yu, Gaofeng Shao, Yu Chen

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 30, 2025

Abstract Intelligent electromagnetic materials featuring controllable and adaptive response characteristics play a vital role in managing complex environments. However, effectively modulating the wave responses from transmission to absorption, advancing interference shielding through external stimuli, remains challenging. Herein, novel moisture‐activated dual‐mode switchable pattern is demonstrated hygroscopic lithium chloride@graphene aerogel (LiCl@GA). Benefiting ordered hierarchical structures that accelerate vertically oriented moisture convection, LiCl@GA exhibits ultrahigh water uptake of 4.76 g −1 ultrafast sorption kinetics. This behavior facilitates both absorption during sorption‐desorption processes. The functionality originates moisture‐driven ionic conduction, where absorbs ambient establish highly conductive pathways. From initial state low (0.3 ), maximum change minimum reflection loss reaches −70.03 dB. Furthermore, at high (2 capability with broad modulation range 5.28 21.4 dB cycles. study unveils previously undiscovered mechanisms for reversibly aligned porous aerogels, expanding their potential applications shielding, smart sensors, communication systems.

Language: Английский

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