Results 21 to 30 of about 85,471 (316)

Perfect Metamaterial Absorber [PDF]

open access: yesPhysical Review Letters, 2008
We present the design for an absorbing metamaterial element with near unity absorbance. Our structure consists of two metamaterial resonators that couple separately to electric and magnetic fields so as to absorb all incident radiation within a single unit cell layer. We fabricate, characterize, and analyze a metamaterial absorber with a slightly lower
Landy, N. I.   +4 more
openaire   +3 more sources

To the issue of optimizing the application of the sealing equipment in the injection well at the long-term pulsed water injection into it

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2019
When determining the operability of the sealing elements, it is necessary to take into account the overall movement of the packer during operation, which it passes before the damage of the sealing elements when fixing the leakage failure in the annulus ...
Marat Ya. Khabibullin
doaj   +1 more source

Near-Infrared Rewritable, Non-Volatile Subwavelength Absorber Based on Chalcogenide Phase Change Materials

open access: yesNanomaterials, 2020
Chalcogenide phase change materials enable the realization of novel, non-volatile, switchable electronic and photonic devices. In this paper, we propose a type of rewritable, non-volatile near infrared subwavelength absorber based on chalcogenide phase ...
Jianfa Zhang   +5 more
doaj   +1 more source

PEROVSKITES AND OTHER FRAMEWORK STRUCTURE CRYSTALLINE MATERIALS (BOOK' FIRST PAGES AND PREFACE)

open access: yesMaterials and Devices, 2021
Perovskites are among the most famous materials due to their exceptional properties: they present nearly all existing types of interesting properties, in particular as ferroics or multiferroics, they may be insulators, (super)conductors, or ...
Saint-Grégoire P., Smirnov M.
doaj   +1 more source

Thermo-Hydraulic Performance of Solar Air Collectors with Artificially Roughened Absorbers: A Comparative Review of Semi-Empirical Models

open access: yesEnergies, 2020
Due to the poor thermal characteristics of the air, the absorber roughness of solar air collectors is commonly artificially increased in order to enhance the heat transfer to the air stream. However, this is also accompanied by an undesirable increase in
António Araújo
doaj   +1 more source

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

80-Gb/s OTDM system analysis of a vertical microcavity-based saturable absorber for the enhancement of pulse pedestal suppression [PDF]

open access: yes, 2007
In future high-speed optical time-division-multiplexed (OTDM) systems, an important factor that needs to be considered for optical pulse generation schemes is the impact of pulse pedestals on the overall system performance.
Anandarajah, Prince M.   +23 more
core   +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

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

An Investigation into Power from Pitch-Surge Point-Absorber Wave Energy Converters. [PDF]

open access: yes, 2007
There is a worldwide opportunity for clean renewable power. The results from the UK Government's "Marine Energy Challenge" showed that marine energy has the potential to become competitive with other forms of energy.
Chaplin, R. V.   +3 more
core   +1 more source

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