Results 41 to 50 of about 32,632 (265)

ELECTROMAGNETIC SAFETY OF ELECTRIC TRANSPORT SYSTEMS: MAIN SOURCES AND PARAMETERS OF MAGNETIC FIELDS [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2013
Magnetic fields produced by electric drive vehicles may break electromagnetic safety. For electromagnetic safety and electromagnetic compatibility knowledge about characteristics and sources of magnetic fields in the electric transport is necessary.
N. G. Ptitsyna, Y. A. Kopytenko, V. S. Ismagilov, A. G. Korobeynikov   +3 more
doaj  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Robust fast PMU measurement recovery enhanced by randomized singular value and sequential Tucker decomposition

IET Generation, Transmission & Distribution, 2022
The development of cyber‐physical power systems raises concerns about the data quality issue of phasor measurement units (PMUs). Low signal‐to‐noise ratios (SNRs) and data losses caused by malicious electromagnetic interference, false data injections ...
Jianhua Pei, Ziyu Wang, Jingyu Wang, Dongyuan Shi   +3 more
doaj   +1 more source

Evaluation and Mitigation of Electromagnetic Interference Between Railways and Nearby Power Lines: A Review

IEEE Access, 2021
A railway running near power lines is subjected to electromagnetic interference from power lines, which can adversely affect normal operation of the railway’s communication and signaling system, resulting in safety hazard on the railway equipment ...
Chenyang Wang, Xiaodong Liang, Emerson Adajar   +2 more
doaj   +1 more source

Three‐Dimensional Hierarchical Nanowire‐Networks with Deep‐Focus Tolerance and Adhesion Robustness for Harsh‐Environment SERS Sensing

Advanced Functional Materials, EarlyView.
A 3D nanowire‐network SERS substrate with robust adhesion is developed, featuring pronounced z‐direction optical activity, ultralow detection limit (1.5 × 10−13 M), and excellent signal uniformity (RSD < 10%). Enabled by enhanced light scattering, increased optical density of states, and structural reinforcement, the substrate demonstrates stable, high‐
Jinglai Duan, Wentao Wang, Xiu Liang, Yongliang Zhang, Jie Liu, Yu Bai, Dangyuan Lei   +6 more
wiley   +1 more source

Building the gulf of opinions on the health and biological effects of electromagnetic radiation

Frontiers in Public Health
Using events that the author was personally involved with over many years, the article attempts to explain how different views solidified over time on the health effects of electromagnetic radiation, some believing they are negligible, while others ...
Paul Héroux, Paul Héroux
doaj   +1 more source

Analysis of Influencing Factors of Wireless Charging Safety in Underground Coal Mine and Countermeasures

Meikuang Anquan, 2020
In view of the lack of relevant safety technical requirements and detection methods for wireless charging in underground coal mines, this paper proposes that electromagnetic induction wireless charging should be preferred to inductance coupling ...
MENG Jijian, CHEN Yongran
doaj   +1 more source

MAGTWIST: A Magnetically‐Driven Rotary Actuator Using a Traveling‐Wave With Integrated Stiffness Tunability

Advanced Functional Materials, EarlyView.
MAGTWIST: A compact magnetic rotary actuator, enabling smooth, stepless rotation, and on‐demand locking. Inspired by peristalsis, a soft polymer belt generates a traveling‐wave, enabling 270° rotation when heated. Cooling stiffens the belt, locking it in position and enabling it to withstand high loads.
Simon Frieler, Jean‐Paul P.M. de Vries, Sarthak Misra, Venkatasubramanian Kalpathy Venkiteswaran   +3 more
wiley   +1 more source

Study on Characteristics of Electromagnetic Coil Used in MEMS Safety and Arming Device

Micromachines, 2020
Traditional silicon-based micro-electro-mechanical system (MEMS) safety and arming devices, such as electro-thermal and electrostatically driven MEMS safety and arming devices, experience problems of high insecurity and require high voltage drive.
Yi Sun, Wenzhong Lou, Hengzhen Feng, Yuecen Zhao   +3 more
doaj   +1 more source