Synthesis of lightweight, hierarchical cabbage-like composites as superior electromagnetic wave absorbent

Nanocomposites Fe/Activated Carbon/PVA for Microwave Absorber: Synthesis and Characterization

“…Development of modern technology in electronic system and telecommunications has greatly increased the demand for electronic devices using 1-5 GHz range microwave radiation, which is resulting in serious electromagnetic interference (EMI) problems [1][2][3][4][5][6]. EMI causes device malfunctions, generates false images, and reduces the performance of the system-to-system coupling to a radar system.…”

Facile solvothermal synthesis of novel hetero-structured CoNi–CuO composites with excellent microwave absorption performance

“…In this regard, the exploration of high-performance microwave absorption/shielding materials is of practical signicance. 7 As has been reported, an efficient EMW absorbing material should simultaneously possess strong absorption intensity and broad-frequency bandwidth, and the primary function of EMW absorption is to attenuate radiation with a dielectric material that interacts directly with the electromagnetic eld. 1,8 Therefore, on one hand, to address this issue, the absorbing materials should be designed with favorable dielectricity.…”

Performance enhanced electromagnetic wave absorber from controllable modification of natural plant fiber

“…4,45 Furthermore, as mentioned in Yin's classical review article, only with appropriate 3 0 and 3 00 values can material have EMW absorption, that is, low 3 0 and intermediate 3 00 are basic requirements, the author also pointed out the required dielectric properties of EMW absorption materials for application, and the specic values region is also given out: 3 0 ranges from 5 to 20, 3 00 ranges from 1 to 10. 46 Fortunately, our materials just meet this requirement. The dielectric loss tangents (tan d e ¼ 3 00 /3 0 , Fig.…”