Results 21 to 30 of about 8,258 (219)

Enhanced transmission performance based on ultrathin broadband circular hole array metasurface

open access: yesMaterials Research Express, 2021
A high transmittance broadband metasurface with Si and STO layers is verified in 100–130 THz. This metasurface achieves a transmission peak (Amplitude 78.1%, Resonance frequency 112.2 THz) with a complete Si layer, or a broad transmission band (Average ...
Li Ruihua, Min Zhong
doaj   +1 more source

Absorbable or non-absorbable sutures? [PDF]

open access: yesThe Annals of The Royal College of Surgeons of England, 2011
This paper raises several important points. Firstly, the follow-up period is too short to generate meaningful conclusions from the results. Wound healing and scar maturation extend up to 12–18 months postoperatively1 and performing the last clinical assessment 6 weeks postoperatively risks missing ‘late’ wound healing problems, eg hypertrophic/keloid ...
openaire   +2 more sources

Ultra-Wideband Terahertz Wave Absorber Using Vertically Structured IGIGIM Metasurface

open access: yesCrystals, 2023
Achieving perfect absorption of electromagnetic waves across a wide range of frequencies is crucial for various applications, including sensing, imaging, and energy capture.
Muhammad Asif   +4 more
doaj   +1 more source

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

Customized Inverse Design of Metamaterial Absorber Based on Target-Driven Deep Learning Method

open access: yesIEEE Access, 2020
Metamaterials (MMs) have already achieved wide applications in academia and industry. The traditional design approach for MMs highly relies on full-wave numerical simulations and trial-and-error methods.
Junjie Hou   +7 more
doaj   +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

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

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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