Dielectric properties and electromagnetic simulation of molybdenum disulfide and ferric oxide-modified Ti3C2TX MXene hetero-structure for potential microwave absorption

Facile synthesis of a 2D multilayer core–shell MnO2@LDH@MMT composite with a nanoflower shape for electromagnetic wave absorption

“…It is noticeable that to further estimate the EW absorption capacity of MNFM by means of the attenuation constant α , consisting of magnetic and dielectric losses, the greater the value of α , the greater the EW attenuation capacity of the composite material, and α can be expressed using the following equation: 50 …”

Facile synthesis of ultralight S-doped Co3O4 microflowers@reduced graphene oxide aerogels with defect and interface engineering for broadband electromagnetic wave absorption

“…Based on the Debye theory, polarization loss is related to the relationship between complex permittivity, and complex permittivity can be defined as follows 52 :where ε s represents the static dielectric constant, ε ∞ is the relative dielectric constant at the high-frequency limit, ω is the angular frequency, σ is the electrical conductivity, and τ is the polarization relaxation time. According to eqn (1) and (2), the ε ′ and ε ′′ can be expressed as below: 60–62 …”

Absorption Dominated Directional Electromagnetic Interference Shielding through Asymmetry in a Multilayered Construct with an Exceptionally High Green Index

“…Conductive fillers and metal-oxide nanofillers are employed for several applications, including EMI shielding. − To fabricate a polymer-based EMI shield, carbon-based fillers (e.g., carbon nanofibers (CNFs), carbon nanotubes (CNTs), and graphene), MXenes, metallic nanoparticles (e.g., silver), and magnetically and dielectrically lossy fillers are mostly incorporated in the polymer matrix. − Conductive fillers shield primarily through conduction losses, eddy current losses, and interfacial polarization losses (due to the junction formed between the filler and the polymer) . Dipolar polarization and magnetic losses are the general losses expected from the dielectrically and magnetically lossy fillers, respectively.…”