Graphene-based aerogel microspheres with annual ring-like structures for broadband electromagnetic attenuation

Structure–Activity Relationship in Microstructure Design for Electromagnetic Wave Absorption Applications

“…Reproduced with permission. [144] Copyright 2023, Elsevier. g) Synthetic mechanism of helical polypyrrole nanofibers.…”

“…[143] Through in situ doping polymerization of poly aniline, graphene oxide microspheres with the same chiral spiral structure were obtained, and the special chiral spiral structure and EM crosspolarization enhanced the impedance matching and EM wave attenuation ability of microspheres (Figure 6f-h). [144] To achieve enhanced EWA performance without increasing the thickness of absorbers, it is possible to increase the transmission paths of EM waves within the absorbers under low-density conditions. [145] Therefore, by designing and regulating the hierarchical structure of EM wave absorbers, one can achieve adjustment of absorption frequency bands and bandwidths and meet the requirements of MAMs for light, wide-band, and efficient absorption.…”

“…h) Microwave absorption mechanisms for CSA-RGO AMs and PANI@RGO AMs. Reproduced with permission [144]. Copyright 2023, Elsevier.…”

Thermally assisted layer–layer crosslinking towards programmable evolution of pore structures for tunable electromagnetic response capability

“…4–8 Comparatively, aerogel absorbers with light weight and porous structures are ideal raw materials applied for broadband and light EM wave absorption materials. 9–11…”

Multifunctional MoCx Hybrid Polyimide Aerogel with Modified Porous Defect Engineering for Highly Efficient Electromagnetic Wave Absorption

“…Despite this progress, they encounter more intricate challenges in the practical application of absorbing materials, particularly within demanding environments characterized by extreme temperatures in industries such as aerospace and defense, requiring them to integrate more functions to adapt to practical demands. [6][7][8][9][10] The full realization of the multifunctionality of EWAWs remains to be achieved, encompassing long-term thermal stability and exceptional mechanical flexibility. [11][12][13][14][15][16][17][18] As such, effectively integrating electromagnetic absorption parts into multiple function components is a valuable strategy to achieve maximum absorption and multifunction performance while maintaining their indispensable physical and chemical properties.…”