Modified sepiolite/BaLa0.5Fe11.5O19@polyaniline composites with superior microwave absorption properties

Nanoclay-based Polymer Nanocomposites for Electromagnetic Interference Shielding

“…Higher the SE, lower will be the transmitted energy through the shield. The SE of -20 dB is desirable for attenuation of almost 99% of EM energy [8].…”

“…where SER, SEA and SEM corresponds to the shielding effectiveness attributed to reflection, absorption and multiple reflection of EM waves respectively. Nanoclays with high interfacial area and porosity can provide high multiple reflection attenuation contributing to increase in SE [8].…”

“…When the impedance of air and the EMI shielding material match, good EM wave absorption can be obtained. The impedance matching of a material can be calculated using the normal impedance matching formula [8].…”

“…At the beginning, the conventional metals have been used as EMI shielding materials. But, owing to high density, cost and corrosion problems associated with metals, alternative EMI shielding materials with desirable characteristics such as high absorption, superior mechanical strength, light weight and easy processability are being developed and reported in literature [7][8][9][10][11].…”

Rationally designed structure of mesoporous carbon hollow microspheres to acquire excellent microwave absorption performance

“…Recently, there have been numerous research studies about microwave absorbers, including magnetic-based nanomaterials (magnetic alloys, magnetic metals, and magnetic oxides), [9][10][11][12][13][14][15] carbon-based nanomaterials (carbon nanotubes, graphene carbon ber, and porous carbon), 6,[16][17][18][19][20][21][22][23][24] and other special nanomaterials. [25][26][27][28][29][30][31][32][33][34][35][36][37][38][39] Magnetic-based nanomaterials, such as CoNi particles, have become one of the best choices of microwave absorbers on account of their unique ferromagnetic features. These features contain high magnetocrystalline anisotropy, high saturation magnetization, and high Snoek's limit.…”