Results 61 to 70 of about 740,547 (334)

Covariant Irreducible Parametrization of Electromagnetic Fields in Arbitrary Spacetime

, 2006
We present a new unified covariant description of electromagnetic field properties for an arbitrary space-time. We derive a complete set of irreducible components describing a six-dimensional electromagnetic field from the Maxwell and metric tensors ...
Carmeli M., David Sundkvist
core   +1 more source

Enhancing Corrosion Resistance and Mechanical Strength of 3D‐Printed Iron Polylactic Acid for Marine Applications via Laser Surface Texturing

Advanced Engineering Materials, EarlyView.
Laser surface texturing significantly improves the corrosion resistance and mechanical strength of 3D‐printed iron polylactic acid (Ir‐PLA) for marine applications. Optimal laser parameters reduce corrosion by 80% and enhance tensile strength by 25% and ductility by 15%.
Mohammad Rezayat, Mojtaba Karamimoghadam, Mohammadreza Lalegani Dezaki, Ali Zolfagharian, Giuseppe Casalino, Antonio Mateo, Mahdi Bodaghi   +6 more
wiley   +1 more source

Tetrads in Geometrodynamics

, 2004
A new tetrad is introduced within the framework of geometrodynamics for non-null electromagnetic fields. This tetrad diagonalizes the electromagnetic stress-energy tensor and allows for maximum simplification of the expression of the electromagnetic ...
Alcides Garat, Carmeli M., Stephani H., Weinberg S.   +3 more
core   +1 more source

Wafer Bonding Technologies for Microelectromechanical Systems and 3D ICs: Advances, Challenges, and Trends

Advanced Engineering Materials, EarlyView.
This review explores wafer bonding technologies, covering wafer preparation, activation methods, and bonding mechanisms. It compares direct and indirect bonding, highlights recent advancements and future trends, and examines applications in 3D integration and packaging.
Abdul Ahad Khan, Tuan‐Khoa Nguyen, Quang Thang Trinh, Nam‐Trung Nguyen, Dzung Viet Dao, Yong Zhu   +5 more
wiley   +1 more source

Design and parameter optimization of PBC-NDO composite controller for electric vehicle wireless charging system

Diance yu yibiao
Aiming at the problems that the charging voltage of the wireless charging system of electric vehicle is unstable due to the offset of the primary and secondary coils and load fluctuation in the process of variable voltage intermittent fast charging, and ...
YAN Rongge, YAN Chunjiao, YANG Qingxin, ZHANG Xian   +3 more
doaj   +1 more source

Electromagnetic field singularities

Journal of Mathematical Analysis and Applications, 2002
This paper is devoted to the electromagnetic fields with axially symmetric radiating sources. The main goal is to solve the inverse problem by connecting the far-field pattern \(E_\infty: E(r,\theta)= E_\infty (\theta) {e^{ir} \over r}+0({1\over r^2})\) for large \(r\) with \(E\)-field singularities.
openaire   +2 more sources

Optimized Strategy for Fabricating High‐Aspect‐Ratio Periodic Structures Over Large Areas Using ps‐Direct Laser Interference Patterning

Advanced Engineering Materials, EarlyView.
Picosecond direct laser interference patterning (DLIP) enables precise microstructure fabrication on stainless steel. Using a multiscan approach, high‐aspect‐ratio patterns are achieved. Fluence influences structure growth and homogeneity, with smaller periods yielding better uniformity.
Fabian Ränke, Marcelo Sallese, Marcos Soldera, Ignacio Tabares, Flavio Soldera, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

Stress analysis of magnetically controlled reactor

AIP Advances, 2017
To provide technique references for vibration reduction of magnetically controlled reactors (MCRs), stress, which is the inherent reason of vibration and noise, should be investigated.
Ben Tong, Yang Qingxin, Yan Rongge, Zhu Lihua, Weng Ling, Sun Ying   +5 more
doaj   +1 more source

A Head/Taillight Featuring Hybrid Planar Visible Light Communications/Millimetre Wave Antenna for Vehicular Communications

IEEE Access, 2020
With the emergence of the fifth generation and beyond mobile networks, both visible light communications (VLC) and radio frequency (RF) or millimetre wave (mmW) systems are expected to maintain the connectivity in various environments.
Mojtaba Mansour Abadi, Pavel Hazdra, Jan Bohata, Petr Chvojka, Paul Anthony Haigh, Zabih Ghassemlooy, Stanislav Zvanovec   +6 more
doaj   +1 more source

The Side-Effects of the Space Charge Field Introduced by Hollow Electron Beam in the Electron Cooler of CSRm

, 2015
Electron cooler is used to improve the quality of the beam in synchrotron, however it also introduces nonlinear electromagnetic field, which cause tuneshift, tunespread and may drive resonances leading to beam loss.
Li, Jie, Ma, Xiao-Ming, Mao, Li-Jun, Ruan, Shuang, Sha, Xiao-Ping, Tang, Mei-Tang, Wang, Geng, Wu, Bo, Yan, Tai-Lai, Yang, Xiao-Dong, Zhao, He, Zheng, Wen-Heng   +11 more
core   +1 more source