Results 11 to 20 of about 34,661 (217)

Topology-Enabled Finite-Band Absorption Framework Based on a Bioinspired Nested Dual-Loop Architecture. [PDF]

open access: yesAdv Sci (Weinh)
A nuclear‐pore‐inspired nested dual‐loop architecture redistributes electromagnetic energy through coupled transport, confinement, and dissipation pathways. Integrated with Co/Fe3O4 dual‐magnetic composites and topology optimization, the 11‐mm‐thick absorber delivers continuous 2–40 GHz attenuation, raises finite‐band structural utilization to 82%, and
Liu S   +6 more
europepmc   +2 more sources

Inherent Relations among the Three Representations of Radar Target Angular Glint (in English)

open access: yesLeida xuebao, 2014
Based on ElectroMagnetic (EM) theory and the monopulse radar angle measurement principle, the formulae of angular glint for complex target are proposed and generally applied to tackling practical problems.
Yin Hong-cheng   +2 more
doaj   +1 more source

Sea-Crossing Bridge Detection in Polarimetric SAR Images Based on Windowed Level Set Segmentation and Polarization Parameter Discrimination

open access: yesRemote Sensing, 2022
As sea-crossing bridges are important hubs connecting separated land areas, their detection in SAR images is of great significance. However, under complex scenarios, the sea surface conditions, the distribution of coastal terrain morphologies, and the ...
Chun Liu, Chao Li, Jian Yang, Liping Hu
doaj   +1 more source

SDTGAN: Generation Adversarial Network for Spectral Domain Translation of Remote Sensing Images of the Earth Background Based on Shared Latent Domain

open access: yesRemote Sensing, 2022
The synthesis of spectral remote sensing images of the Earth’s background is affected by various factors such as the atmosphere, illumination and terrain, which makes it difficult to simulate random disturbance and real textures.
Biao Wang   +4 more
doaj   +1 more source

Dramatic Enhancement and Integration of Properties in Pork Belly‐Inspired All‐Biomass Composite Films via Facile, Sustainable, and Controllable Design [PDF]

open access: yesAdvanced science
A pork belly‐inspired all‐biomass composite film was constructed through layer‐by‐layer assembly of cellulose nanofibers (CNFs), gelatin, and graphitized carbon nanosheets (GCNs) via hydrogen bonding and π–π stacking interactions. The excellent mechanical properties, effective thermal management, and outstanding EMI shielding performance of the ...
Ren J   +12 more
europepmc   +2 more sources

Theoretical and Experimental Study on the Permittivity of CdTe in the Terahertz Band

open access: yesLeida xuebao, 2018
The phonon dispersion spectrum, eigenvector, and lattice vibration frequency of cadmium telluride with a zinc blende structure have been investigated using the density functional theory, and the permittivity of cadmium telluride crystal is numerically ...
Sun Wang   +3 more
doaj   +1 more source

Planar microwave retroreflector based on transmissive gradient index metasurface

open access: yesNew Journal of Physics, 2020
In this paper, a novel planar microwave retroreflector based on a transmissive gradient metasurface combined with a curved metal mirror is proposed and demonstrated.
Yong-Qiang Liu   +4 more
doaj   +1 more source

Numerical Simulation of Single Droplet Impingement upon Dynamic Liquid Film Obliquely

open access: yesMathematics, 2022
To better understand the application of droplet impingement in industry and agriculture, in this paper, the coupled level set and volume of fluid (CLSVOF) method is applied to study droplet oblique impact on a dynamic liquid film. The conclusions are the
Shanshan Yang   +4 more
doaj   +1 more source

Highly Robust Synthetic Aperture Radar Target Recognition Method Based on Simulation Data Training

open access: yesInternational Journal of Antennas and Propagation, 2022
Sufficient synthetic aperture radar (SAR) data is the key element in achieving excellent target recognition performance for most deep learning algorithms.
Liping Hu   +4 more
doaj   +1 more source

Field discrete Monte Carlo simulation of electromagnetic scattering characteristics of plasma sheath

open access: yesAIP Advances, 2020
The electromagnetic scattering of an ultra-high-speed plasma covered target is simulated by the field discrete Monte Carlo method. The flow field network is used to simulate the trajectory of electromagnetic wave particles according to the ...
Jieshu Jia   +5 more
doaj   +1 more source

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