Results 41 to 50 of about 172,007 (293)

Electromagnetic wave absorption characteristics of silicon carbide modified concrete applied to protective engineering

open access: yesCase Studies in Construction Materials
Electromagnetic protection measures can effectively prevent electromagnetic waves from harming equipment, facilities, information security and human health. To enhance the electromagnetic wave-absorbing capacity of standard concrete, silicon carbide (SiC)
Lei Gao, Gang Li, Xiaohua Zhang
doaj   +1 more source

Low-frequency absorption cross section of the electromagnetic waves for the extreme Reissner-Nordstrom black holes in higher dimensions

open access: yes, 2010
We investigate the low-frequency absorption cross section of the electromagnetic waves for the extreme Reissner-Nordstrom black holes in higher dimensions. We first construct the exact solutions to the relevant wave equations in the zero-frequency limit.
Crispino, Luis C. B.   +2 more
core   +1 more source

X-band operations metamaterial absorber with extended circular ring topology for size reduction [PDF]

open access: yes, 2017
A metamaterial electromagnetic wave absorber consisting of a big circular ring patch with four smaller suppression circular rings is presented in this report.
Ayop, O.   +5 more
core   +2 more sources

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

State-of-the-art in carbides/carbon composites for electromagnetic wave absorption

open access: yesiScience, 2023
Summary: Electromagnetic wave absorbing materials (EWAMs) have made great progress in the past decades, and are playing an increasingly important role in radiation prevention and antiradar detection due to their essential attenuation toward incident EM ...
Bo Hu   +7 more
doaj   +1 more source

Phenomenological model of multiphoto-production of charged pion pairs on the proton

open access: yes, 2010
The production of charged pion pairs via multiphoton absorption from an intense X-ray laser wave colliding with an ultrarelativistic proton beam is studied.
Abbon   +53 more
core   +1 more source

Bimetallic Nanoparticles as Cocatalysts for Photocatalytic Hydrogen Production

open access: yesAdvanced Functional Materials, EarlyView.
Recent developments have introduced bimetallic nanoparticles as effective cocatalysts for photocatalytic systems. This review explores the rapidly expanding research on bimetallic cocatalysts for photocatalytic production of hydrogen, emphasizing the creation of carrier‐selective contacts, localized surface plasmon resonance effects, methodologies for ...
Yufen Chen   +4 more
wiley   +1 more source

Implanting Ag nanoparticles in SiOC ceramic nanospheres for exceptional electromagnetic wave absorption and antibacterial performance

open access: yesJournal of Advanced Ceramics
The development of multifunctional composites with desirable electromagnetic wave absorption and antibacterial performance for the medical field has aroused wide interest. In this work, SiOC/Ag composites were successfully fabricated via the liquid-phase
Junjie Qian   +9 more
doaj   +1 more source

Nitrogen-Doped Magnetic-Dielectric-Carbon Aerogel for High-Efficiency Electromagnetic Wave Absorption

open access: yesNano-Micro Letters, 2023
Highlights An ingenious design achieved magnetic-dielectric-carbon coupling. Nickel and manganese oxide particles were in situ reduced and grew on the carbon aerogels.
Shijie Wang   +7 more
doaj   +1 more source

Total absorption of an electromagnetic wave by an overdense plasma

open access: yes, 2005
We show both theoretically and experimentally that an electromagnetic wave can be totally absorbed by an overdense plasma when a subwavelength diffraction grating is placed in front of the plasma surface.
D. Bohm   +4 more
core   +1 more source

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