Results 61 to 70 of about 11,248 (224)

Sustainable Upcycling of Office Waste Paper Into Cobalt/Carbon Aerogels for Highly Efficient Microwave Absorption

Electron, EarlyView.
Co/C aerogels (Co/CAs) are successfully fabricated with office waste paper (OWP) as the raw material by loading ZIF‐67 crystals. The optimal sample exhibited an effective absorption bandwidth of 5.6 GHz, which outperforms many biomass‐derived microwave absorbing materials.
Yan Wang, Lixue Gai, Xingyi He, Xijiang Han, Yongzheng Chen, Yunchen Du   +5 more
wiley   +1 more source

Joint Transmit-receive Beam Design of FDA-MIMO Dual-function Radar-communication Systems for Radio-frequency Stealth

Leida xuebao
Efficient Radio-Frequency (RF) stealth is crucial for Dual-Function Radar-Communication (DFRC) systems that detect radar stealth and con vert communication transmission.
Haozheng WU, Chenguang SHI, Jianjiang ZHOU   +2 more
doaj   +1 more source

Study on the Comprehensive Optimization of Quantum Radar Stealth Based on the Waverider Warhead

Aerospace, 2023
Quantum radar is a novel detection method that combines radar and quantum technologies. It exceeds the detection threshold and poses a threat to conventional stealth targets. This work aims to derive the expression of the quantum radar cross-section of a
Shaoze Lu, Zhijun Meng, Jun Huang, Mingxu Yi   +3 more
doaj   +1 more source

Multi‐dimensional, multi‐interfacial, and multi‐path synergy enables broadband absorption, corrosion resistance, Joule heating, and thermal performances in hierarchical carbon/Ni nanoparticles‐carbon nanocoils foams

InfoMat, EarlyView.
Owing to the severe electromagnetic wave (EMW) pollution and the increasingly intricate operating environments, an excellent EMW absorber with multiple functions has become imperative. Herein, 3D/0D‐1D hierarchical carbon/Ni nanoparticles‐carbon noncoils (CNCs) composite foams with multi‐dimensional, multi‐interfacial and multi‐path structures can be ...
Beibei Zhan, Yiru Zhang, Zhiyun Tan, Aming Xie, Xiu Gong, Qiong Peng, Jing‐Liang Yang, Yunpeng Qu, Xiaosi Qi   +8 more
wiley   +1 more source

Gradient-Based Aero-Stealth Optimization of a Simplified Aircraft

Fluids
Modern fighter aircraft increasingly need to conjugate aerodynamic performance and low observability. In this paper, we showcase a methodology for a gradient-based bidisciplinary aero-stealth optimization.
Charles Thoulon, Gilbert Roge, Olivier Pironneau   +2 more
doaj   +1 more source

Classical Disordered Ground States: Super-Ideal Gases, and Stealth and Equi-Luminous Materials

, 2008
Using a collective coordinate numerical optimization procedure, we construct ground-state configurations of interacting particle systems in various space dimensions so that the scattering of radiation exactly matches a prescribed pattern for a set of ...
Ashcroft N. W., Feynman R. P., Frank H. Stillinger, Hansen J. P., Joannopoulos J. D., Press W. H., Robert D. Batten, Salvatore Torquato   +7 more
core   +1 more source

Target motion estimation via a multistatic FSR [PDF]

, 2015
The focus of this paper is on the estimation of the kinematic parameters of moving targets via a MIMO Forward Scatter Radar (FSR) system. A sub-optimum estimation technique is considered that exploits the information concerning the time instants at ...
Cherniakov, M., Contu, M., Daniel, L., De Luca, A., Gashinova, M., LOMBARDO, Pierfrancesco, PASTINA, Debora   +6 more
core   +1 more source

A tunable microwave absorption metamaterial inspired by moths evading bat detection

InfoMat, EarlyView.
Electromagnetic radiation in the current environment has become complex and uncontrollable due to the advancement of wireless technology. Inspired by the moth surface cilia to bend and evade bat sonar detection, our work introduces a metamaterial incorporating broadband and tunable microwave absorption properties combined with deep learning algorithms.
Yijie Liu, Weimeng Chu, Jintang Zhou, Zhenyu Cheng, Yi Yan, Yuanming Yang, Ruiyang Tan, Shiju Liu, Ping Chen, Yucheng Wang, Lvtong Duan, Yao Ma, Xiangshuai Song, Zhengjun Yao   +13 more
wiley   +1 more source

Integration of photo‐driven rapid self‐healing and environmental robustness for durable electromagnetic wave absorbing elastomers

InfoMat, EarlyView.
A physical cross‐linking strategy is adopted to design MXene/self‐healing polyurethane elastomer for their improvement of flexibility, environmental robustness, rapid self‐healing ability, and comprehensive electromagnetic wave absorption properties.
Junxiong Xiao, Beibei Zhan, Zhiyun Tan, Junfei Ding, Yunpeng Qu, Xiu Gong, Qiong Peng, Wei Zhong, Yanli Chen, Xiaosi Qi   +9 more
wiley   +1 more source

Mesoporous Hollow Carbon Spheres/Nanofibers Anchored With Conductive Bimetallic for Efficient Microwave Absorption

Rare Metals, EarlyView.
ABSTRACT To break electromagnetic wave absorption (EMA) tech's single‐attenuation bottleneck, enhancing multi‐wave absorption synergy in composites is key for microstructure design. This study uses mesoporous hollow carbon spheres to make metal nanospheres with cobalt, iron, and nickel nanoparticles, then encapsulates them via electrospinning into a ...
Wei‐Lian Zhang, Shuang Xu, Xia Li, Ya‐Hui Yin, Cheng‐Long Sun, Zi‐Long Yu, Chun Zhao, Di Lan, Zi‐Rui Jia, Guang‐Lei Wu, Xian‐Zhen Xu   +10 more
wiley   +1 more source