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24301
Electrical and magnetic anisotropies in van der Waals multiferroic CuCrP2S6
Published 2023-02-01Get full text
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24302
Ag-Nanowire Bundles with Gap Hot Spots Synthesized in Track-Etched Membranes as Effective SERS-Substrates
Published 2021-02-01Get full text
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24303
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24304
Penrose Process: Its Variants and Astrophysical Applications
Published 2021-10-01“…The extraordinary case is represented by the radiative Penrose process that can occur only around magnetized Kerr spacetimes but just inside their ergosphere, in contrast to the magnetic Penrose process that can occur in a more extended effective ergosphere determined by the intensity of the electromagnetic interaction. The explanation is simple, as the radiative Penrose process is closely related to radiated photons with negative energy whose existence is limited just to the ergosphere.…”
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24305
Gravitational versus Magnetohydrodynamic Waves in Curved Spacetime in the Presence of Large-Scale Magnetic Fields
Published 2023-06-01“…In particular, we examine to what extend perturbations of the electric and/or the magnetic field can be amplified due to a potential energy transfer from the GW to the electromagnetic (EM) degrees of freedom. The evolution of the perturbed quantities depends on four free parameters, namely, the conductivity of the fluid, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>σ</mi></semantics></math></inline-formula>; the speed of sound square, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mfrac><mn>1</mn><mn>3</mn></mfrac><mo><</mo><msup><mfenced separators="" open="(" close=")"><mfrac><msub><mi>C</mi><mi>s</mi></msub><mi>c</mi></mfrac></mfenced><mn>2</mn></msup><mo>≡</mo><mi>γ</mi><mo><</mo><mn>1</mn></mrow></semantics></math></inline-formula>, which in this model may serve also as a measure of the inherent anisotropy; the GW frequency, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msub><mi>ω</mi><mi>g</mi></msub></semantics></math></inline-formula>; and the associated angle of propagation with respect to the direction of the magnetic field, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi>θ</mi></semantics></math></inline-formula>. …”
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24306
Hybrid Pulse-Width Modulation Strategy With Reduced High-Frequency Common-Mode Voltage to Lower RMS Motor Leakage Current for a Three-Level Neutral Point Clamped Converter
Published 2023-01-01“…Due to the capacitive nature of Common-mode impedance, high-frequency Common-mode voltage due to high switching frequency leads to an increase in RMS leakage current, which, in turn, causes higher power loss, Electromagnetic Interferences, and deteriorated harmonic distortion in the three-level Neutral-Point-Clamped converter. …”
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24307
Structure, optical properties, TD-DFT simulations for nanosecond and continuous laser irradiation of vanadium antimony borate glass doped with nickel ferrite
Published 2024-01-01“…The glass was found to absorb electromagnetic waves with wavelengths lower than 500 nm, while the energy gap decreased from 2.46 eV for 0.1 mol% V2O5 to 2.39 eV for 0.5 wt% V2O5. …”
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24308
Study on the estimation of Euler angles for Macau Science Satellite-1
Published 2023-01-01“…Before launch of the low-orbit, low-inclination Macau Science Satellite-1 (known as MSS-1), we simulated the estimation of Euler angles by using the magnetic measurements of the in-orbit Swarm and China Seismo-Electromagnetic Satellite (noted as CSES), with various data combinations. …”
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24309
Optimizing AC Resistance of Solid PCB Winding
Published 2020-05-01“…To clarify this phenomenon, this paper focuses on modeling the influence of skin and proximity effects on AC resistance of planar PCB winding, thereby providing guidelines to reduce the winding AC resistance. An approximate electromagnetic calculation method is proposed and it shows that when the winding proximity AC to DC ratio <inline-formula> <math display="inline"> <semantics> <mrow> <mo>(</mo> <msub> <mi>F</mi> <mrow> <mi>p</mi> <mi>r</mi> <mi>o</mi> <mi>x</mi> <mi>i</mi> <mi>m</mi> <mi>i</mi> <mi>t</mi> <mi>y</mi> </mrow> </msub> <mo>)</mo> </mrow> </semantics> </math> </inline-formula> is equal to <inline-formula> <math display="inline"> <semantics> <mfrac> <mn>1</mn> <mn>3</mn> </mfrac> </semantics> </math> </inline-formula> the AC on DC ratio caused by skin effect <inline-formula> <math display="inline"> <semantics> <mrow> <mo>(</mo> <msub> <mi>F</mi> <mrow> <mi>s</mi> <mi>k</mi> <mi>i</mi> <mi>n</mi> </mrow> </msub> <mo>)</mo> </mrow> </semantics> </math> </inline-formula>, the winding is optimized and it has lowest AC resistance. 3-D finite element simulations of 3, 7 and 10-Turn windings, which are divided into 3 groups with the same footprint, are presented to investigate the lowest AC resistance when the track width varies from 3 mm to 5 mm and the frequency range is up to 700 kHz. …”
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24310
A Single Wavelength Mid-Infrared Photoacoustic Spectroscopy for Noninvasive Glucose Detection Using Machine Learning
Published 2022-03-01“…Multiple noninvasive glucose detection techniques have been developed, including bio-impedance spectroscopy, electromagnetic sensing, and metabolic heat conformation. …”
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24311
Rain-Based Attenuation and Dispersion Characteristics of Terahertz Wave in Tropical Climate: Experimentally Verified Reliability Study
Published 2023-01-01“…Atmospheric condition can affect the electromagnetic/radio signal transmission severely. Since, the presence of seasonal hydrometeors in atmosphere may lead to drastic degradation in the free-space propagation of terahertz signal, therefore thorough and comprehensive investigation is essentially required to optimize the future channel-model for terahertz carrier frequency. …”
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24312
Polyethylene terephthalate-based colored emitters for efficient daytime radiative cooling
Published 2023-03-01Get full text
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24313
Critical State Theory for the Magnetic Coupling between Soft Ferromagnetic Materials and Type-II Superconductors
Published 2021-10-01“…These phenomena, which are in apparent contradiction with the most fundamental theory of electromagnetism for superconductivity, that is, the critical state theory (CST), have remained unexplained for about 20 years, given the acceptance of the controversial and yet paradigmatic existence of the so-called overcritical current densities. …”
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24314
Statistical Characterization and Modeling of Indoor RF-EMF Down-Link Exposure
Published 2023-03-01“…With the increasing use of wireless communication systems, assessment of exposure to radio-frequency electromagnetic field (RF-EMF) has now become very important due to the rise of public risk perception. …”
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24315
Solar Photovoltaic Hotspot Inspection Using Unmanned Aerial Vehicle Thermal Images at a Solar Field in South India
Published 2023-04-01“…The defects on solar cells were identified with the use of thermal bands, which record and point out their temperature of them, whereas anomalies in the detected temperature in defective solar cells were captured using thermal electromagnetic waves, and these areas are mentioned as hotspots. …”
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24316
3D Printed Active Origami Dielectrics for Frequency Tunable Antennas Through Mechanical Actuation
Published 2022-01-01“…We investigate using a reconfigurable metamaterial structure based on high permittivity dielectric elements in a flexible origami framework to control the electromagnetic response of a suspended patch antenna. …”
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24317
Computational Assessment of Magnetic Nanoparticle Targeting Efficiency in a Simplified Circle of Willis Arterial Model
Published 2023-01-01“…The computational model is used to analyze pulsatile blood flow, particle motion, and particle capture efficiency in a magnetized region using the magnetic properties of magnetite <i>(Fe<sub>3</sub>O<sub>4</sub>)</i> and equations describing the magnetic forces acting on particles produced by an external cylindrical electromagnetic coil. A Eulerian–Lagrangian technique is implemented to resolve the hemodynamic flow and the motion of particles under the influence of a range of magnetic field strengths <i>(B<sub>r</sub> = 2T, 4T, 6T, and 8T)</i>. …”
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24318
PENGARUH PAPARAN MEDAN MAGNET EXTREMELY LOW FREQUENCY (ELF) TERHADAP MASSA JENIS TOMAT RANTI
Published 2022-11-01“…The ELF magnetic field is one type of electromagnetic wave that is Non-Ionizing and has been stated in several studies in the fields of food, agriculture and so on. …”
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24319
Conformational Selectivity of Merocyanine on Nanostructured Silver Films: Surface Enhanced Resonance Raman Scattering (SERRS) and Density Functional Theoretical (DFT) Study
Published 2022-06-01“…The excitation wavelength dependent SERS spectrum infers that in addition to the major contribution from the electromagnetic enhancement, chemical (resonance) effect leads to the amplification of the 1540 cm−1 band. …”
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24320