
Porous Electromagnetic Wave Absorbing Materials
Yang Guodong, Yuan Gaoqian, Zhang Jingzhe, Wu Jinbo, Li Faliang, Zhang Haijun
Prog Chem ›› 2023, Vol. 35 ›› Issue (3) : 445-457.
Porous Electromagnetic Wave Absorbing Materials
Recently, structure modification has been used more and more widely in enhancing the performance of electromagnetic wave absorbing materials. Porous structure is not only conducive for the incidence of electromagnetic waves into the interior of the material, but also can effectively improve the impedance matching between electromagnetic wave and materials, resulting in enhanced absorption of electromagnetic waves. Additionally, multiple scattering and reflection endowed by the different scale pores in materials extend the propagation path of electromagnetic wave, and further increase its loss. Meanwhile, the lightweight nature of porous material provides a feasible way for the application of some absorbing materials with high performance but unduly density. In this paper, the research status and problem of zero- and three-dimensional porous electromagnetic wave absorbing materials (PEMAM) are summarized and the possible research hotspots and development directions of porous electromagnetic wave absorbing materials in the future are also proposed.
electromagnetic wave absorbing material / porous structure / electromagnetic loss / impedance matching
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