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In order to satisfy the impedance matchingImpedance matching with free space, the loss parametersLoss parameters are necessary in the absorbent medium. There are three types of material loss: electrical conductivityConductivity \(\sigma\) , dielectric lossDielectric loss \(\varepsilon_{r}^{\prime \prime }\) , andLossdielectric magnetic lossMagnetic loss \(\mu_{r}^{\prime \prime }\) . InLossmagnetic this materials part, various lossy materials are reviewed that can be used as EM wave absorbers, including conductive materials (carbon blackCarbon black, carbon nanotubeCarbon nanotubes, grapheneGraphene, MXeneMxene), magnetic materials (spinel and hexagonal ferritesFerrites, carbonyl ironIron, high-permeability metalsHigh-permeability metals), dielectricDielectrics materials (ferroelectricsFerroelectrics, silicon carbideSilicon carbide (SiC)), core–shell materialsCore-shell materials (with various structures and materials combination), fiber-reinforced composite materials (used for radarRadar absorbing structures), and recently developed metamaterialsMetamaterials or metasurfaces. Literature reviews on their high-frequencyFrequency electromagnetic properties and EM wave absorption performance are also presented.

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Electromagnetic Wave Absorption Materials

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  • 发表日期：

    2025年

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  • Sung-Soo Kim

摘要

In order to satisfy the impedance matchingImpedance matching with free space, the loss parametersLoss parameters are necessary in the absorbent medium. There are three types of material loss: electrical conductivityConductivity \(\sigma\) , dielectric lossDielectric loss \(\varepsilon_{r}^{\prime \prime }\) , andLossdielectric magnetic lossMagnetic loss \(\mu_{r}^{\prime \prime }\) . InLossmagnetic this materials part, various lossy materials are reviewed that can be used as EM wave absorbers, including conductive materials (carbon blackCarbon black, carbon nanotubeCarbon nanotubes, grapheneGraphene, MXeneMxene), magnetic materials (spinel and hexagonal ferritesFerrites, carbonyl ironIron, high-permeability metalsHigh-permeability metals), dielectricDielectrics materials (ferroelectricsFerroelectrics, silicon carbideSilicon carbide (SiC)), core–shell materialsCore-shell materials (with various structures and materials combination), fiber-reinforced composite materials (used for radarRadar absorbing structures), and recently developed metamaterialsMetamaterials or metasurfaces. Literature reviews on their high-frequencyFrequency electromagnetic properties and EM wave absorption performance are also presented.