Results 201 to 210 of about 22,471 (262)

Overcoming the Phase Discontinuity Problem in RIS Optimization: A Robust and Scalable Phase‐Aware Deep Regression Framework via Hybrid CNN–LSTM Architecture

Advanced Intelligent Systems, EarlyView.
The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen, Ali Çalhan, Murtaza Cicioğlu, Oğuzhan Demiryürek   +3 more
wiley   +1 more source

Graphene Aerogel Composites with Self-Organized Nanowires-Packed Honeycomb Structure for Highly Efficient Electromagnetic Wave Absorption. [PDF]

Nanomicro Lett
You X, Ouyang H, Deng R, Zhang Q, Xing Z, Chen X, Shan Q, Yang J, Dong S.   +8 more
europepmc   +1 more source

Correction: Defects-Rich Heterostructures Trigger Strong Polarization Coupling in Sulfides/Carbon Composites with Robust Electromagnetic Wave Absorption. [PDF]

Nanomicro Lett
Liu J, Zhang S, Qu D, Zhou X, Yin M, Wang C, Zhang X, Li S, Zhang P, Zhou Y, Tao K, Li M, Wei B, Wu H.   +13 more
europepmc   +1 more source

Modulating Electromagnetic Genes Through Bi-Phase High-Entropy Engineering Toward Temperature-Stable Ultra-Broadband Megahertz Electromagnetic Wave Absorption. [PDF]

Nanomicro Lett
Liu X, Duan Y, Wu N, Li G, Guo Y, Liu J, Zhu N, Wang Q, Wang L, Xu Z, Wei H, Wang G, Zhang Z, Zhang S, Zhou W, Ma T, Wang T.   +16 more
europepmc   +1 more source

Enhancing Defect-Induced Dipole Polarization Strategy of SiC@MoO₃ Nanocomposite Towards Electromagnetic Wave Absorption. [PDF]

Nanomicro Lett
Wang T, Zhao W, Miao Y, Cui A, Gao C, Wang C, Yuan L, Tian Z, Meng A, Li Z, Zhang M.   +10 more
europepmc   +1 more source

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Absorption of electromagnetic waves by graphene

Physics of Wave Phenomena, 2013
The power of the circularly polarized electromagnetic wave absorbed by graphene is calculated using the Boltzmann kinetic equation written in the relaxation approximation and the numerical Monte Carlo simulation. It is shown that in the limit of large radiation amplitudes the power absorbed by graphene is directly proportional to the amplitude ...
S. V. Kryuchkov, E. I. Kukhar’, D. V. Zav’yalov   +2 more
openaire   +1 more source

The Dispersion and Absorption of Electromagnetic Waves

1958
The topic to be reviewed in this article is the experimental study of the behaviour of matter under the action of the electromagnetic fields encountered in the electrical portion of the spectrum, that is to say, in waves of all wavelengths greater than a few millimetres.
L. Hartshorn, J. A. Saxton
openaire   +1 more source

Hierarchical‐Bioinspired MOFs Enhanced Electromagnetic Wave Absorption

Small, 2023
AbstractProteins exhibit complex and diverse multi‐dimensional structures, along with a wide range of functional groups capable of binding metal ions. By harnessing the unique characteristics of proteins, it is possible to enhance the synthesis of metal‐organic frameworks (MOFs) and modify their morphology.
Sajid ur Rehman, Shuai Xu, Zehua Li, Tongxiang Tao, Jing Zhang, Haining Xia, Hunagtao Xu, Kun Ma, Junfeng Wang   +8 more
openaire   +2 more sources

Ordinary electromagnetic waves in absorptive crystals

Crystallography Reports, 2003
It is shown that “switching-on” of absorption in a continuum of the directions of propagation of ordinary electromagnetic waves in transparent triclinic crystals results in the “survival” of only a discrete number of these directions. The relationships for the angular coordinates of these directions are obtained in terms of the components of a complex ...
V. I. Alshits, V. N. Lyubimov
openaire   +1 more source