A SiC nanowires/Ba0.75Sr0.25Al2Si2O8 ceramic heterojunction for stable electromagnetic absorption under variable-temperature

Surface engineering of nanoflower-like MoS2 decorated porous Si3N4 ceramics for electromagnetic wave absorption

“…9 compares the EMW absorption performance of MoS 2 /Si 3 N 4 ceramics prepared in this work with contemporary ceramic materials. 64–71 The nanoflower-like MoS 2 -decorated porous Si 3 N 4 ceramics exhibited excellent microwave absorption performance, especially in terms of EAB and RL min .…”

Lightweight Honeycomb rGO/Ti3C2Tx MXene Aerogel without Magnetic Metals toward Efficient Electromagnetic Wave Absorption Performance

“…It is well known that input impedance matching and attenuation capacity are important indexes to evaluate the performance of absorbing materials. The normalized impedance Z is usually used to evaluate the impedance matching of absorbing materials, and its variation with frequency can be calculated from eq , Z = | Z in Z 0 | = true( μ normalr ε normalr true) 1 / 2 0.25em tanh [ j true( 2 π italicfd c true) ( μ r ε r ) 1 / 2 ] when the Z value is close to 1, the EMW can enter into the absorption material as much as possible. At this point, the impedance matching of the absorbing material is the best, which is conducive to microwave absorption.…”

“…It is well known that input impedance matching and attenuation capacity are important indexes to evaluate the performance of absorbing materials. The normalized impedance Z is usually used to evaluate the impedance matching of absorbing materials, and its variation with frequency can be calculated from eq 7 62,63 i k j j j j j y…”

Microstructure controllable polyimide/MXene composite aerogels for high-temperature thermal insulation and microwave absorption

“…This behavior can be elucidated using Debye theory. 37 Theoretically, as the temperature increases, both relaxation time shortens and electrical conductivity increases, benefiting the increase in the complex permittivity.…”