Facile synthesis of MAPbI3/CNTs composites with superior electromagnetic wave absorption performances

Hollow Core–Shell Fe3O4@PPy Nanocomposites with Tunable Microwave Absorption Frequencies and High Reflection Loss

“…The increase in PPy shell thickness, therefore, leads to an increase in the conductivity of the nanocomposite, which results in a higher conduction loss. Additionally, it can be observed that ε′ and ε″ of all the nanocomposites decrease with increasing frequency, a phenomenon known as frequency dispersion effect . This effect is due to the polarization relaxation of the dipoles in the nanocomposite.…”

“…Additionally, it can be observed that ε′ and ε″ of all the nanocomposites decrease with increasing frequency, a phenomenon known as frequency dispersion effect. 45 This effect is due to the polarization relaxation of the dipoles in the nanocomposite. Dipoles in an electromagnetic field reorient themselves in response to changes in the direction of the electric field.…”

“…The attenuation constant (α) is an important metric for evaluating the microwave attenuation capacity of nanocomposites; a higher α value indicates a correspondingly greater ability to attenuate microwaves. The Z and α values can be obtained from Equations and (), ,, respectively, and their relationships with frequency are shown in Figure . Furthermore, to comprehensively analyze the MA mechanism in nanocomposites, detailed data regarding their MA performance are presented in Table S3.…”