Showing 1,001 - 1,020 results of 1,156 for search '"electromagnet"', query time: 0.07s Refine Results
  1. 1001

    Plasma-polymerized fluorocarbon Ag–Cu nanocomposites: Nanostructure optimization for superior SERS sensitivity by Joonhyuk Lee, Sung Hyun Kim, Seok-Kyun Son, Sang-Jin Lee

    Published 2025-01-01
    “…This enhancement relies on the presence of Raman-active molecules on suitable nanostructures, where local surface plasmon resonance creates electromagnetic hotspots. This paper proposes a method to finely control the distribution of Ag and Cu nanoparticles within a plasma–polymer–fluorocarbon (PPFC) thin film by adjusting the sputtering power density to improve SERS performance. …”
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  2. 1002

    Comparative Hypothesis Testing of Auroral Ionospheric Layer Causing Global Navigation Satellite System Scintillation by G. Blinstrubas, A. English, D. J. Stuart, D. L. Hampton, L. Lamarche, Y. Nishimura, S. Datta‐Barua

    Published 2025-01-01
    “…Abstract As Global Navigation Satellite System electromagnetic waves pass through the ionosphere, especially in auroral zones, ionospheric irregularities cause the waves to scintillate. …”
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  3. 1003

    Design of an Ultrawideband Circularly Polarized Printed Crossed-Dipole Antenna Based on Genetic Algorithms for S-Band CubeSat Applications by Jorge Simon, Hugo Perez-Guerrero, Jorge Sosa-Pedroza, Fabiola Martínez-Zúñiga, Juvenal Villanueva-Maldonado, Jorge Flores-Troncoso, Marco Cardenas-Juarez

    Published 2021-01-01
    “…This paper presents an ultrawideband circularly polarized two-layer crossed-dipole microstrip antenna for S-band CubeSat applications using genetic algorithms optimization tools included in the 3D electromagnetic simulation software Ansys HFSS. The antenna is constructed on a 10 × 10 cm Cuclad-250 substrate with a back copper flat plane, located at λ/4 at 2.25 GHz operating frequency. …”
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  4. 1004

    FRR: A Fast Routing Recovery mechanism minimizing network formation time in smart grids by Giancarlo C. Heck, Ananias A. Quispe, Patryk H. da Fonseca, Osni S. Junior, Roberto A. Hexsel, Luiz C.P. Albini

    Published 2025-03-01
    “…The adopted standards allow Wi-SUN FAN networks to take advantage of features such as security, frequency hopping, multi-hop packet routing, and IPv6 addressing, ensuring a wide coverage area and immunity against electromagnetic interference. Despite all the advantages, a shortcoming of Wi-SUN FAN networks is the long network formation time. …”
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  5. 1005

    Bandwidth Reconfigurable Metamaterial Arrays by Nathanael J. Smith, Dimitris Papantonis, John L. Volakis

    Published 2014-01-01
    “…Metamaterial structures provide innovative ways to manipulate electromagnetic wave responses to realize new applications. …”
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  6. 1006

    Enhancement of Coal Permeability Using Aqueous NaCl with Microwave Irradiation by Weiming Guan, Qi Qi, Senlin Nan, Haichao Wang, Xin Li, Yingyuan Wen, Junhui Yao, Yanyan Ge

    Published 2022-01-01
    “…Both the average surface temperature of the coal rock samples and the average electromagnetic heating power gradually increased; this increases the temperature rise rate and maximum temperature of coal rock samples under the same irradiation time, which is conducive to better rapid accumulation of steam pressure, thereby improving the pore structure more effectively. …”
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  7. 1007

    Comparative experimental validation of microwave hyperspectral atmospheric soundings in clear-sky conditions by L. Liu, N. Bliankinshtein, Y. Huang, J. R. Gyakum, P. M. Gabriel, S. Xu, M. Wolde

    Published 2025-01-01
    “…Hyperspectral radiance measurements afford a useful means to retrieve these thermodynamic variable fields by harnessing the rich information contained in the electromagnetic wave spectrum of the atmospheric radiation. …”
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  8. 1008

    Label-free (fluorescence-free) sensing of a single DNA molecule on DNA origami using a plasmon-enhanced WGM sensor by Ghamari Shahin, Chiarelli Germán, Kołątaj Karol, Subramanian Sivaraman, Acuna Guillermo P., Vollmer Frank

    Published 2025-01-01
    “…By leveraging the strong electromagnetic fields generated within the nanogap of the plasmonic dimer, this platform enables the detection of transient hybridization events between DNA docking strands and freely diffusing complementary sequences. …”
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    Article
  9. 1009

    Microstructure and properties of the Al-0.5 wt.% Fe alloy wire, copper-clad by electrochemical deposition by A.E. Medvedev, K.E. Kiryanova, E.B. Medvedev, M.V. Gorbatkov, M.M. Motkov

    Published 2025-01-01
    “…Annotation: This study examines the microstructure, mechanical and electrical properties of the copper-clad wires with a core of Al-0.5Fe alloy, obtained by casting into an electromagnetic crystallizer (EMC). The outer copper layer with a thickness of 90 ± 10 μm was applied via electrochemical deposition. …”
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  10. 1010

    A Two-Stage Method for Screening Pulse RFI in SAR Raw Data Alternating the Use of Time and Frequency Domains by Tingting Wei, Xingwang Hu, Zhengwei Guo, Gaofeng Shu, Yabo Huang, Ning Li

    Published 2025-01-01
    “…In the increasingly complex electromagnetic environment, the spectrum is becoming more and more crowded. …”
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  11. 1011

    Bulk Motions in the Black Hole Jet Sheath as a Candidate for the Comptonizing Corona by Navin Sridhar, Bart Ripperda, Lorenzo Sironi, Jordy Davelaar, Andrei M. Beloborodov

    Published 2025-01-01
    “…We find that the electromagnetic power flowing through the jet sheath is comparable to the overall accretion power of the black hole. …”
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  12. 1012

    A multi-band dual-layer encoded microwave absorber with angle selectivity by Senfeng Lai, Jingyi Luo, Junxian Tan, Huiyuan Fu

    Published 2025-03-01
    “…The experimental results showed that the absorber demonstrated selective absorption exceeding 90 % for various angles of incidence and frequencies; specifically, it achieved over 99 % absorption only at 2 GHz at an oblique incidence angle of 60°, and over 90 % absorption only at 18 GHz at an incidence angle of 30°.This microwave absorber, capable of achieving 99 % absorption at specific angles and frequencies, showcases significant value in multiple areas such as electromagnetic compatibility, signal integrity, military applications, and communication fields.…”
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  13. 1013

    An EIRP Measurement Method of High-Power Microwave Systems Based on Near-Field Testing by Xianggang Hu, Jiancang Su, Mingtao Zhang, Xi Li, Dingkun Ma, Jingang Gong, Kewei Cheng, Jia Liu, Jiande Zhang, Rui Li, Jie Cheng, Shaotong Wu

    Published 2024-01-01
    “…Theoretical research on this measurement method was conducted, the electromagnetic simulation model was constructed, and a comprehensive analysis through simulation was undertaken. …”
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  14. 1014

    SERS-based quantitative vertical flow assay using dual Au-Ag SERS nanoprobes by Jinhyeok Jeon, Ji-In Park, Chulhyun Lee

    Published 2025-01-01
    “…For the preparation of SERS nanoprobes, we made use of the gold-silver/core–shell metal nanostructures for the local electromagnetic-field enhancement effect, and the Raman signal could be improved. …”
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  15. 1015

    Design and fabrication of (Hf0.25Zr0.25Ta0.25Nb0.25)C–SiC ceramics with improved microwave absorbing properties via PDC route by Bin Du, Saidi Wang, Linwei Guo, Yimin Ouyang, Hanwei Cheng, Yajuan Cheng, Tao Zhang

    Published 2025-01-01
    “…This study offers a novel strategy for the fabrication of high-entropy ceramic–SiC biphasic composites with excellent microwave absorbing properties, paving the way for their application in electromagnetic interference shielding and stealth technologies.…”
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  16. 1016

    Detection of ultrafast electron energization by whistler-mode chorus waves in the magnetosphere of Earth by S. Kurita, Y. Miyoshi, S. Saito, S. Kasahara, Y. Katoh, S. Matsuda, S. Yokota, Y. Kasahara, A. Matsuoka, T. Hori, K. Keika, M. Teramoto, I. Shinohara

    Published 2025-01-01
    “…Abstract Electromagnetic whistler-mode chorus waves are a key driver of variations in energetic electron fluxes in the Earth’s magnetosphere through the wave-particle interaction. …”
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  17. 1017

    Patient's head position-dependent safety analysis of birdcage coil, loop array, and dipole array for applications at 300 MHz in magnetic resonance imaging based on hydrogen nuclei:... by Eunwoo Lee, Taewoo Nam, Daniel Hernandez, Donghyuk Kim, Yeunchul Ryu, Yeji Han, Kyoung-Nam Kim

    Published 2025-02-01
    “…This study employs electromagnetic (EM) simulations to quantitatively assesses variations in SAR resulting from different patient's head positions across three types of RF coils (birdcage coil, loop array coil, and dipole array coil), frequently employed as transmission/reception (Tx/Rx) coils in 7 T MRI. …”
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    Article
  18. 1018

    Discretized Impedance-Based Modeling of Converter-Interfaced Energy Resources for State-Variable-Based Real-Time EMT Simulators by Taleb Vahabzadeh, Seyyedmilad Ebrahimi, Juri Jatskevich

    Published 2025-01-01
    “…Design, analysis, and reliable operation of such systems require extensive offline and real-time electromagnetic transient (EMT) simulations. This paper proposes discretized impedance-based modeling (DIBM) of VSCs for efficient time-domain transient analysis in state-variable (SV)-based EMT simulators. …”
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  19. 1019

    Graphene-Metamaterial Based Tunable Broadband Polarization Insensitive Absorber for Terahertz Antenna Design by Rummanur Rahad, Abu S. M. Mohsin, Mohammed Belal Hossain Bhuian, Md. Mosaddequr Rahman

    Published 2024-01-01
    “…The advent of graphene has opened new avenues for the design of high-performance metamaterial devices, particularly in the realm of electromagnetic absorption applications. This paper introduces a novel design for a broadband tunable graphene metamaterial absorber (GMMA) utilizing graphene. …”
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  20. 1020

    Fiber-tip photonic crystal for real-time referenced biosensing in serum by Mathias Dolci, Paco Dreverman, Mildred S. Cano-Velázquez, Arthur L. Hendriks, Emiel Veth, P.J. van Veldhoven, Andrea Fiore, Peter Zijlstra

    Published 2025-03-01
    “…Fiber optic sensors have become increasingly well-established due to the many advantages they provide such as immunity to electromagnetic interference, multiplexing capabilities, and remote sensing. …”
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