Results 101 to 110 of about 11,457 (241)

Visible-infrared compatible stealth metamaterial for space applications

Optics Express
Space-to-ground visible and infrared stealth is of great importance in space technology. In this paper, we propose and demonstrate a visible-infrared compatible stealth metamaterial for space applications. The metamaterial combines a multilayer of Ge and Mo with a periodical array of Ge nano-pyramids on the top.
Jianfa Zhang, Song Gu, Cong Quan, Xin He, Zhihong Zhu   +4 more
openaire   +1 more source

Infrared Reflector Design using the Phase Field Method for Infrared Stealth Effect

Journal of the Computational Structural Engineering Institute of Korea, 2015
Abstract In this paper, infrared reflector design targeting infrared stealth effect is presented using structural optimization based on the phase field method. The analysis model was determined to accomplish the design that an incident infrared wave was reflected to a desired direction.
Heo Namjoon, Yoo Jeonghoon
openaire   +2 more sources

Electronic jelly: Engineering the mechanics of hydrogels for flexible electronics

FlexMat, EarlyView.
By unifying mechanical reinforcement strategies—double networks, structural ordering, and dynamic interactions—this review demonstrates how engineered hydrogels can transcend their fragility to achieve the strength, toughness, and reliability required for flexible electronics, including wearable sensors, energy devices, and soft robotic systems ...
Tianfu Zheng, Chongling Cheng, Dayang Wang   +2 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

Plasmonic Metamaterials: Physical Background and Some Technological Applications [PDF]

, 2019
New technological frontiers appear every year, and few are as intriguing as the field of plasmonic metamaterials (PMMs). These uniquely designed materials use coherent electron oscillations to accomplish an astonishing array of tasks, and they present ...
Schmidt, Benjamin G.
core   +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

Terahertz Technology for Defense and Security-Related Applications [PDF]

, 2012
This thesis deals with chosen aspects of terahertz (THz) technology that have potential in defense and security-related applications. A novel method for simultaneous data acquisition in time-resolved THz spectroscopy experiments is developed.
Iwaszczuk, Krzysztof
core   +1 more source

Vanadium dioxide/aluminum composites for adaptive infrared stealth

Ceramics International
Vanadium dioxide (VO2) is assumed as a promising dynamic infrared stealth material owing to its tunable emissivity. However, the relatively high emissivity associated with VO2-based adaptive infrared stealth materials poses a constraint on their practical applications.
Jing Wang, Long Zeng, Mingxu Xia, Shouxun Ji, Zhen Zhang, Jiamiao Liang, Weizong Bao, Guoqiang Xie, Jianguo Li   +8 more
openaire   +3 more sources

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

Modern Warfare: Is the Evolution of Weaponry Worth the Cost? [PDF]

, 2012
War is a creation of mankind that has evolved along with human civilization, leaving a bloody trail in its wake. As there are those in our world who strive to improve peacetime society, there are also those who push the limits of weaponry and ...
DeCastro, Nicholas
core   +1 more source