Energy‐Efficiency‐Dried Silver Nanowire Aerogels With Orientational‐Tunable Gigahertz and Terahertz Electromagnetic‐Interference Shielding

ABSTRACT The expansion of wireless technologies into higher spectral territories creates an urgent demand for lightweight materials with broadband, tunable electromagnetic interference (EMI) shielding capabilities from gigahertz (GHz) to terahertz (THz). Conventional materials fail to span this range due to a fundamental performance paradox, while promising silver nanowire (AgNW) aerogels are hindered by mechanical fragility, environmental instability, and non‐scalable fabrication methods. Here, we report a facile, energy‐efficient, and scalable ambient‐pressure drying strategy to assemble robust, anisotropic AgNW‐based aerogels that overcome these critical challenges. The facile and precise control over the microstructural networks composed of AgNWs, nanocellulose, and transition metal carbides/nitrides enables aerogels' ultrabroadband EMI shielding. Crucially, the aerogels allow for dynamic, real‐time control of shielding effectiveness by tuning the aerogels' pore channels relative to the incident wave electric field direction, enabling adaptive electromagnetic management across GHz to THz spectra. This work provides a robust and potentially scalable platform for producing nanostructured aerogels, offering a promising strategy for electromagnetic protection in advanced communication and electronic systems.