Results 91 to 100 of about 11,248 (224)

Advanced Ceramics in Aerospace and Defense: The Interrelationship between Traditional and Additive Manufacturing Approaches

Advanced Materials Technologies, Volume 11, Issue 3, 5 February 2026.
Additive manufacturing revolutionizes production by enabling on‐demand, customized, and sustainable manufacturing with streamlined supply chains. While metal and polymer AM are well‐established, advanced ceramic AM is rapidly emerging, overcoming traditional material challenges.
Kateryna Oleksandrivna Shvydyuk, Senentxu Lanceros‐Mendez, Abílio Pereira Silva   +2 more
wiley   +1 more source

Accurate Analysis of Target Characteristic in Bistatic SAR Images: A Dihedral Corner Reflectors Case

Sensors, 2017
The dihedral corner reflectors are the basic geometric structure of many targets and are the main contributions of radar cross section (RCS) in the synthetic aperture radar (SAR) images.
Dongyang Ao, Yuanhao Li, Cheng Hu, Weiming Tian   +3 more
doaj   +1 more source

Epsilon‐Negative Derived Electromagnetic Wave Absorption of Magnetic Metacomposites by Bifunctional Phase Paradigm

Advanced Science, Volume 13, Issue 7, 3 February 2026.
An epsilon‐negative response of up to 100000 in the radio frequency band is achieved by creating a metacomposite system with graphene/iron (III) oxide as the main body. The magnetic metacomposites are just like the mythical creature Qiongqi in Chinese mythology, capable of swallowing electromagnetic wave pollution that falls from the sky.
Xiance Zhu, Yunpeng Qu, Qiuyun Yang, Jing Mao, Xiaosi Qi, Yunlei Zhou, Chunyuan Deng, Shicheng Qiu, Yao Liu   +8 more
wiley   +1 more source

The Military and Security Aspects of Obama’s Pivot to Asia [PDF]

, 2014
Rozdział z: The Quandaries and Foreign Development, ed. D.
Furgacz, Przemysław
core  

Multifunctional integrated metamaterials for radar-infrared-visible compatible multispectral stealth

Optics Express
Metamaterials offer exciting opportunities for developing multispectral stealth due to their unique electromagnetic properties. However, currently transparent radar-infrared-visible compatible stealth metamaterials typically involve complex hierarchical designs, leading to thickness and transparency limitations.
Zhen Meng, Dongqing Liu, Cuilian Xu, Jiafu Wang, Yongqiang Pang, Jiaheng Yang, Xinghua Li, Boheng Gui, Haifeng Cheng   +8 more
openaire   +2 more sources

Facile Manufacturing of PEEK‐Based Nanocomposites for High‐Efficiency Wide‐Temperature‐Range Electromagnetic Wave Absorption

Advanced Science, Volume 13, Issue 8, 9 February 2026.
Herein, thermally robust poly(ether ether ketone)‐based composites reinforced by a hierarchical Fe3O4/carbon nanotubes/reduced graphene oxide (Fe3O4/CNTs/rGO) network are reported, delivering wide‐temperature‐range broadband electromagnetic wave absorption (298–573 K; minimum reflection loss (RLmin) ≈ −66 dB).
Liang Zhao, Jingpeng Lin, Zifan Zheng, Yajun Chen, Xiong Yang, Yu Han, Yuchuan Cheng, Chenxi Hu, Zhihui Zeng   +8 more
wiley   +1 more source

Design of composite stealth cloak based on anomalous reflections and vortex singularities

Results in Physics
In this paper, an ultra-thin (0.072λ) composite stealth cloak is proposed to cover a cloak with a center height of 98.88 mm and an inclination angle of 25° to achieve the dual stealth effect of scattering and gain. Firstly, based on the Generalized Snell
Junlin Wang, Jing Guan, Xin Wang, A Saer, Xinyu Tong, Yunsheng Guo, Shuaixin Ma   +6 more
doaj   +1 more source

Intelligent Surface Assisted Radar Stealth Against Unauthorized ISAC

IEEE Wireless Communications Letters
The integration of radar sensors and communication networks as envisioned for the 6G wireless networks poses significant security risks, e.g., the user position information can be released to an unauthorized dual-functional base station (DFBS). To address this issue, we propose an intelligent surface (IS)-assisted radar stealth technology that prevents
Fan Xu, Wenhai Lai, Kaiming Shen
openaire   +2 more sources

Frequency Selective Rasorber With Low Insertion Loss and Ultra‐Broadband Scattering Reduction

Advanced Physics Research, Volume 5, Issue 2, February 2026.
We present a dual‐polarization broadband frequency selective rasorber featuring a transmission window in the middle of its absorption band. The proposed FSR achieves a –10 dB reflection band over 3.68–16.94 GHz with a fractional bandwidth of 128.6%, featuring a minimum insertion loss of 0.3 dB at 10.3 GHz.
Ziming Yu, Chong He, Liping Liu, Liming Si, Weiren Zhu   +4 more
wiley   +1 more source

Unusual spacecraft materials [PDF]

For particularly innovative space exploration missions, unusual requirements are levied on the structural components of the spacecraft. In many cases, the preferred solution is the utilization of unusual materials.
Post, Jonathan V.
core   +1 more source