Results 121 to 130 of about 19,271 (301)

Thermally Induced Creep and Viscoelastic Behavior of Copper Micropillar Arrays

Advanced Science, EarlyView.
Copper micropillar arrays are fabricated by electrodeposition within through‐glass‐via, and their thermally induced time‐dependent deformation is quantified. Nanoindentation creep, EBSD, and TEM reveal a heat‐treatment‐driven transition between grain‐boundary‐mediated deformation and dislocation‐dominated creep, while Kelvin modeling captures ...
Miao Wang, Jihua Zhang, Libin Gao, Hongwei Chen, Wenbo Luo, Wenlei Li, Mingcheng Chen, Mengru Li, Dongbin Wang, Shuang Li, Ting Liu, Xingzhou Cai, Yong Li, Bin Peng, Wanli Zhang   +14 more
wiley   +1 more source

Effect of mutual coupling on spatial correlation for different manifold arrays

Dianxin kexue, 2018
The mechanism of MC and its impact on the received signal vector were analyzed.A closed-form expression and an approximate expression of SC for antenna arrays with different forms were derived,where the power angle spectrum of arrival signal was modeled ...
Ying YANG, Weidong LI, Cuiwei XUE, Qiuming ZHU, Zhizhong LIAO, Xiaomin CHEN   +5 more
doaj   +2 more sources

Photonic Time Crystals and Time‐Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices

Advanced Science, EarlyView.
Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel, Shriram Ramanathan, Ronald P. Jenkins, Michael J. Carter   +3 more
wiley   +1 more source

Directivity and spacing for the antenna elements [PDF]

, 1983
The optimum design choice for the MST radar antenna was considered. The following factors are required: directivity and gain; beam width and its symmetry; sidelobe levels, near and wide angle; impedance matching; feeder network losses; polarization ...
Koshy, V. K.
core   +1 more source

Spin Hall Nano‐Antenna

Advanced Science, EarlyView.
ABSTRACT The spin Hall effect is a well‐known phenomenon in spintronics that has found numerous applications in digital electronics (memory and logic), but relatively few in analog electronics. Practically the only analog application in widespread use is the spin Hall nano‐oscillator (SHNO) that delivers a high frequency alternating current or voltage ...
Raisa Fabiha, Pratap Kumar Pal, Michael Suche, Amrit Kumar Mondal, Erdem Topsakal, Anjan Barman, Supriyo Bandyopadhyay   +6 more
wiley   +1 more source

An Efficient DoA Estimation Approach for 2-D Planar Array Antennas via Axial Decomposition of Antenna Current Green’s Function

IEEE Access
Array manifold, constructed from the received signals by incoming waves in antenna arrays, serves as a fundamental framework for characterizing electromagnetic behavior in direction finding systems.
Jeong-Wan Lee, Sung-Jun Yang
doaj   +1 more source

Mutual Coupling Effects Analysis in a Cross-Rhombic Antenna Array

International Journal of Antennas and Propagation, 2012
We present an analysis of mutual coupling effects on radiation pattern and individual coupling in a conformal array of cross rhombic antennas. Analysis is made using both full-wave simulation and numerical approaches implemented in Matlab.
Jorge Sosa-Pedroza, Luis Carrión-Rivera, Sergio Peña-Ruiz, Fabiola Martínez-Zuñiga   +3 more
doaj   +1 more source

Random Time‐Space Coding Metasurfaces for Spatial Control of the Temporal Statistics of Electromagnetic Fields

Advanced Science, EarlyView.
A probabilistic framework based on random time‐space coding metasurfaces enables control of the spatial distribution of electromagnetic fields temporal statistics. By tailoring the marginal and joint distributions of random codes, electromagnetic fields with desired mean and variance patterns are realized, enabling simultaneous transmission and jamming.
Jia Cheng Li, Jiang Han Bao, Che Liu, Tie Jun Cui   +3 more
wiley   +1 more source

Mutual Coupling in Antenna Arrays

International Journal of Antennas and Propagation, 2010
Hui, HT, Bialkowski, ME, Lui, HS
openaire   +3 more sources

Living Hydrogels: Harnessing Microorganism–Material Synergy for Next‐Generation Therapeutics

Advanced Science, EarlyView.
 . ABSTRACT Microorganism‐based therapies, particularly those utilizing probiotics, have emerged as a powerful biomedical strategy owing to their inherent living functionalities. These living systems can dynamically interact with host environments and self‐regulate their activity, offering superior adaptability, prolonged functionality, and ...
Shuifang Mao, Bingyao Bai, Xingqian Ye, Yiliang Lin   +3 more
wiley   +1 more source