In situ generated gas bubble-directed self-assembly of multifunctional MgO-based hybrid foams for highly efficient thermal conduction, microwave absorption, and self-cleaning

Abstract

Developing multifunctional materials with superior thermal conductivity and microwave absorption is an effective mean to address the increasingly serious electromagnetic (EM) compatibility and heat dissipation problems in modern electron devices....

Graphene/silver nanowire aerogel sponge for highly effective electromagnetic energy attenuation

“…AgNWs and graphene nanosheets with a high aspect ratio are beneficial because they will form a dense 3D conductive network, which is an advantageous structure for electromagnetic attenuation. 26,27…”

Enhanced polarization via Joule heating in wood-derived carbon materials for absorption-dominated EMI shielding

“…Increased conductivity can result in heightened polarization and conduction losses to attenuate the EMWs, which are linked to the generation and movement of free and localized charges. 35 Particularly, SE R is related to the impedance mismatch between the interface of free space and material's surface, and it is caused by the interaction of charged particles (free electrons or holes) in the EM field. A higher conductivity would yield a more noticeable impedance mismatch, increasing the SE R values.…”

Facile Synthesis of FexOy/C-Based Microwave Absorption Composites under Elevated-Temperature Heat Treatment for the High-Value Utilization of Red Mud

“…In most of the magnetic/carbon composite materials, the synthesis and introduction of magnetic components are usually achieved by a cumbersome and time-consuming chemical process. , For the large-scale production and application of absorbers in the future, low-cost raw materials and production costs also need to be seriously considered. To achieve this goal, our research group previously attempted to recycle carbonaceous solid waste, such as fly ash, coal gangue, and coal gasification residue to replace expensive carbon materials in the construction of magnetic/C composite absorbers.…”