Results 31 to 40 of about 85,471 (316)

Reflection and refraction characteristics of a spherical acoustic black hole

open access: yesNihon Kikai Gakkai ronbunshu, 2018
Spherical Acoustic Black Hole (ABH), a kind of acoustic metamaterial, has been made in the new configuration to control three dimensional propagation of acoustic wave and its characteristics have been investigated by experiments and numerical simulations.
Koichi MORI, Kazuki FUKAYA
doaj   +1 more source

Spectrum Absorbency of Metamaterial Perfect Absorber

open access: yesThe International Journal of Integrated Engineering, 2022
A triple-band metamaterial perfect absorber was introduced. The single and simple structure based on gold-bar shaped was designed on the 0.018λ Taconic TLY-5. The gold-bar shaped was designed horizontal initially was then being rotated anti-clockwise from0oto 90oto analyze and understand the change of absorption graph.
Siti Adlina Md Ali   +2 more
openaire   +1 more source

Implementation of Atomically Thick Graphene and Its Derivatives in Electromagnetic Absorbers

open access: yesApplied Sciences, 2019
To reduce the radar cross section at microwave frequencies, it is necessary to implement electromagnetic (EM) absorbing devices/materials to decrease the strength of reflected waves.
Jing Tian   +5 more
doaj   +1 more source

Electronic and structural characterisation of Cu3BiS3 thin films for the absorber layer of sustainable photovoltaics [PDF]

open access: yes, 2014
Thin films of p-type Cu3BiS3 with an orthorhombic wittichenite structure, a semiconductor with high potential for thin film solar cell absorber layers, were synthesised by thermal annealing of Cu and Bi precursors, magnetron sputtered on Mo/glass ...
Forbes, Ian   +23 more
core   +1 more source

Analysis of Computer Modelling Results on Fuel Rods Strength and Condition at Reduced or Absent Cooling Caused by Accident

open access: yesEnergy Engineering and Control Systems, 2021
The paper describes the phenomenology of fuel rod behaviour in severe accident. As an example, an experiment is described resulting in severe damage of 19 fuel rod assembly of VVER type; it was carried out in the CORA facility in 1993 (Research Centre ...
Stepan Lys
doaj   +1 more source

Research progress in broadband absorber based on artificial electromagnetic medium

open access: yesCailiao gongcheng, 2020
Artificial electromagnetic medium can effectively expand the absorption bandwidth of the absorber,which has aroused wide attention of researchers at home and abroad.
DU Hong-yan   +7 more
doaj   +1 more source

Testing and Analysis of MOSFET-Based Absorber Integrated Antenna for 5G/WiMAX/WLAN Applications

open access: yesNanomaterials, 2022
A 3D electromagnetic circuit design and analysis of a MOSFET-based absorber active integrated antenna has been performed. It integrates a transmitting dual-band double material substrate (DMS) cylindrical surrounding patch antenna (CSPA) with a MOSFET ...
Elliot O. Omoru, Viranjay M. Srivastava
doaj   +1 more source

Stereo Perfect Metamaterial Absorber Based on Standing Gear-Shaped Resonant Structure With Wide-Incident-Angle Stability

open access: yesFrontiers in Physics, 2020
In this work, a single-band metamaterial absorber (MA) based on a three dimensional (3D) resonant structure is presented. The unit cell is composed of a standing gear-shaped resonator, which is embedded in the dielectric substrate.
Guangsheng Deng   +4 more
doaj   +1 more source

Plasmonic parametric absorbers

open access: yesOptics Letters, 2018
Exploiting the dynamics of Plasmonic Parametric Resonance (PPR), we introduce the theory of Plasmonic Parametric Absorbers (PPA). The key insight informing the PPA idea is that in the PPR process a pump field experiences an extinction rate that strongly depends on the intensity of the pump itself, creating two distinct regimes: one of weak absorption ...
Fardad, Shima, Salandrino, Alessandro
openaire   +3 more sources

Experimental Investigation of the Capture Performance Model for a Novel Omnidirectional Wave Energy Converter

open access: yesEnergies
The performance of wave energy converters (WECs) in terms of energy capture presents considerable challenges in enhancing conversion efficiency. This research proposes a structural design and operational principle for an omnidirectional oscillating buoy ...
Wensheng Wang   +5 more
doaj   +1 more source

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