With the increasingly serious electromagnetic wave (EMW) pollution, development of high-performance EMW absorbing materials (EWAMs) has become a hot topic. Carbon-based EWAMs have excellent chemical stability, high electrical conductivity, and strong dielectric loss. In particular, three-dimensional (3D) porous carbon-based been widely developed in absorption field. The 3D structure not only re...

To improve the impedance matching condition and broaden effective absorbing bandwidth, a series of cylindrical periodic structured gypsum composites with different kinds carbonaceous materials as absorbents were fabricated by two-step molding process. The influences mass fraction helical carbon fiber (HCF), nanotube (CNT), graphene (GE) on morphology, permittivity, resistivity, electromagnetic ...

Neutron reflectometry is a powerful tool used for studies of surfaces and interfaces. The absorption in the typical studied materials is neglected and this technique is limited only to the reflectivity measurement. For strongly absorbing nuclei, the absorption can be directly measured by using the neutron-induced fluorescence technique which exploits the prompt particle emission of absorbing is...

Scattering of femtosecond laser pulses on resonant transmission and reflection gratings made of dispersive (Drude metals) and dielectric materials is studied by a time-domain numerical algorithm for Maxwell’s theory of linear passive (dispersive and absorbing) media. The algorithm is based on the Hamiltonian formalism in the framework of which Maxwell’s equations for passive media are shown to ...

The dynamics of a collisionless electron gas under the influence of the selfconsistent electromagnetic field is studied in an interval, where electrons are emitted at one end of the interval and absorbed at the other. The electron distribution f depends on one space variable x and two dimensional velocity variables (v1, v2), whereas the electromagnetic field satisfies the Maxwell system. It is ...

PyLlama is a handy Python toolkit to compute the electromagnetic reflection and transmission properties of arbitrary multilayered linear media, including case anisotropy. Relying on 4×4-matrix formalism, implements not only transfer matrix method, that most popular choice in existing codes, but also scattering which numerically stable all situations (e.g., thick, highly birefringent cholesteric...

Abstract The rapid proliferation and intensive use of electronic devices have led to an increase in pollution, such as noise, electromagnetic interference (EMI), radiofrequency (RFI), which cause malfunctions devices. emergence flexible polymer composites has a remarkable potential for shielding depending on their unique characteristics, electrical, thermal, mechanical, magnetic properties, are...