To overcome the limitations of localized SEM observation and provide a more comprehensive view of the gradient architecture, cryo-microtomy analysis was performed on the composite film, which further reveals an increasing trend of Al-Fe 3 O 4 nanosheets from the top to the bottom layers (Fig. 3 ).
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Bioinspired Layered-Gradient Nanocomposites for Intelligent Electromagnetic Skins with GHz-THz Wave Absorption, Shielding, and Solvent-Driven Actuation.
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