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Publications related to Electrodynamics (10,000)
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In this paper we put forward the hypothesis that transition from Galileo transformation to Lorentz transformation is achieved according to existence in void space-time the Schwinger force We must make some profound alterations to the theoretical idea of the vacuum.. .. Thus, with the new theory of electrodynamics we are rather forced to have an aet...
Article
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Plain Language Summary Geomagnetic storms are disturbances in Earth’s magnetic field driven by solar activity, such as coronal mass ejections or solar flares. These storms can have significant effects on space technology and infrastructure, including satellite and radio communication and navigation tools. Understanding how these geomagnetic storms...
Article
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In a recent study, we introduced a relativistic model of type-II superconductivity in the framework of scalar electrodynamics (SED). The model extended the principles of the nonrelativistic Ginzburg–Landau (GL) theory to explore the electromagnetic (EM) properties of superconductors in a relativistic context. Building on this work, we now propose a...
Article
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An electrocardiogram (ECG) is used to monitor the heart's electric impulses and visualize cardiac signals in order to identify issues. For the early identification of heart-related conditions, the non-invasive Electrocardiogram (ECG), which offers data on cardiac abnormalities, has become a common procedure. A variety of methods are employed to ide...
Article
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The Ayón-Beato García (ABG) solution describes a nonlinear electrodynamic nonsingular black hole in general relativity and can be regarded as a strong field correction to the Reissner-Nordström solution. We exam the possibility of destroying the ABG nonsingular black hole with a test charged particle and a complex scalar field. By comparing with th...
Preprint
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In his 1905 paper, "On the Electrodynamics of Moving Bodies" [Einstein, 1905], Albert Einstein defined time and simultaneity and postulated the constancy of the speed of light as a fundamental natural constant. This paper argues that Einstein's reasoning was simplistic, misguided, and fundamentally flawed, and that a bright child today could readil...
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We investigate the feasibility of probing Bopp-Land{\'e}-Thomas-Podolsky generalized electrodynamics with traveling and standing wave experiments. We consider wave propagation in vacuum and in a cold and non-magnetized plasma. Dispersion relations are found for all possible transverse and longitudinal modes. Longitudinal traveling waves are found w...
Article
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Ce⁴⁺ rare earth ions mixed metal oxides with chemical composition CexCu0.5Mn0.5-xO2 (x = 0.0, 0.01, 0.03,0.05) synthesized by co-precipitation technique. The as-synthesized nanoparticles were further calcined for 500 °C. The calcined binary and ternary nano oxides were characterized by powder XRD, SEM, EDX, FTIR, PL, CV, Antimicrobial and photocata...
Article
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Introducción. La ecografía musculoesquelética se ha convertido en una herramienta fundamental para el quehacer diario de los especialistas en medicina física y rehabilitación en el mundo. A pesar de esto, en Colombia se desconoce la percepción de estos profesionales de la salud sobre la utilidad, la seguridad y la viabilidad de su uso en el país. O...
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Polaritons are quantum mechanical superpositions of photon states with elementary excitations in molecules and solids. The light-matter admixture causes a characteristic frequency-momentum dispersion shared by all polaritons irrespective of the microscopic nature of material excitations that could entail charge, spin, lattice or orbital effects. Po...
Presentation
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This presentation introduces a theoretical and experimental approach to resonant field-based mobility, proposing that dynamic interaction with an ambient energetic lattice can enable frictionless, medium-agnostic propulsion. The research builds on the integration of scalar field theory, advanced image analysis, and porphyrin-based materials to expl...
Preprint
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Partially gated two-dimensional electron systems (2DES) represent the basic building block of prospective optoelectronic devices, including electromagnetic detectors and sources. At the same time, the electrodynamic properties of such structures have been addressed only with numerical simulations. Here, we provide an exact solution of electromagnet...
Article
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Converting CO2 into valuable products via photo‐, electro‐, and photoelectrocatalysis offers the possibility of simultaneously mitigating global warming and energy shortages. Single‐atom catalysts (SACs) have garnered significant interest from researchers owing to their optimal atom use, suitable coordination environments, distinctive electronic st...
Article
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Silver‐based nanomaterials have emerged as potent antibacterial agents, particularly effective in combating antibiotic‐resistant bacterial infections. However, the uncontrolled and continuous release of Ag ion (Ag⁺) significantly compromises their biocompatibility, thereby restricting their widespread clinical applications. A novel biomimetic nanop...
Article
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Polaritons are quantum mechanical superpositions of photon states with elementary excitations in molecules and solids. The light–matter admixture causes a characteristic frequency-momentum dispersion shared by all polaritons irrespective of the microscopic nature of material excitations that could entail charge, spin, lattice or orbital effects. Po...
Article
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On 10 May 2024, a powerful coronal mass ejection arrived at Earth at 17:05UT and caused a major geomagnetic storm. With the minimum SYM‐H excursion of −497 nT (5‐min data), this storm is the largest geomagnetic disturbance since March 1989, and can be categorized as a superstorm. In this work, by using ground‐based and space‐borne instruments, we f...
Preprint
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Recent advances in dielectric materials science reveal critical limitations in classical electrodynamics, particularly in explaining anomalous behaviors near plasma resonance and phase transition frequencies (ω* and ω**). Ivanova et al. (2024) introduce a recursive dielectric model incorporating telegrapher-style feedback, damping, and stiffness, c...
Preprint
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We explore the fundamental idea that there may be a role for the Casimir effect, via an uncertainty relation, in the generation of electron-positron and quark-gluon plasmas. We investigate this concept, reviewing the possible contribution of semi-classical electrodynamics to nuclear interactions, specifically focusing on the Casimir effect at sub-F...
Chapter
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The classification of microwave technological processes (MWTP) variants, based on the use of electromagnetic energy of the microwave range super and extremely high frequencies (SHF and EHF), allows us to distinguish at least two characteristic classes. The first is low-intensity (information) MWTP. This class strictly includes the processes charact...
Preprint
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ABRACADABRA-10 cm has had great success as a pathfinder lumped-element axion dark matter experiment, setting limits on axion dark matter at the GUT scale. Now, using the interaction of gravitational waves with electrodynamics and a change in readout strategy, we use the ABRA-10 cm detector for the first search for high-frequency gravitational waves...
Article
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Conventional metals cannot undergo rectification at low-field regions because the existence of Fermi energy prohibits nonlinear responses. Similarly, materials with inversion symmetry typically do not exhibit rectification as it necessitates the inversion symmetry breaking in the conventional mechanism. In this study, we report our observation of s...
Preprint
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The radiative heat transfer in the extreme near-field regime, i.e. for distances below 10 nm, remains poorly understood. There are competing experimental results in this regime, with some in good agreement with theoretical predictions, while others report drastically elevated heat fluxes, orders of magnitude larger than what theory suggests. Whethe...
Article
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Purpose. A study of induction-type magnetic levitation by determining the electromechanical processes that occur when a stationary inductor is connected to an alternating voltage source and the levitation of an anchor made in the form of a multi-turn short-circuited winding with an attached load. Methodology. Using a mathematical model describing a...
Preprint
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This paper introduces the Oscillatory Dynamics Transductive-Bridging Theorem (ODTBT), a theoretical model that interprets physical phenomena not through force-based interactions or stochastic field effects, but through recursive phase alignment and transductive coherence dynamics. Drawing on empirical findings from high-voltage inductive pulse char...
Article
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The overall, loaded quality factor QL quantifies the loss of energy stored in a resonator. Here we discuss on general grounds how QL of a planar microwave resonator made of a conventional superconductor should depend on temperature and frequency. We consider contributions to QL due to dissipation by thermal quasiparticles ( QQP), due to residual di...
Cover Page
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The proposed symposium is a scientific platform to discuss recent advances in fundamental concepts, material design, and device development for photoelectrochemical water splitting, solar fuels production, oxidation of organic molecules, photo-reforming, photoactive sensors, and the development of light-enhanced devices such non-conventional fuel c...
Preprint
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In this work, we propose a coupled mode theory for resonant response from quasi-guided modes in periodic dielectric metasurfaces. First, we derived a generic set of constraints imposed onto the parameters of the temporal coupled mode theory by energy conservation and time-reversal symmetry in an invariant form that allows for asymmetry between the...
Preprint
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This paper proposes the design of a single linear parameter-varying (LPV) controller for the attitude control of CubeSats using electro spray thrusters. CubeSat attitude control based on electro spray thrusters faces two main challenges. Firstly, the thruster can only generate a small control torque leading to easily saturating the actuation system...
Article
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p-Type-semiconductor Cu 2 O facets {111} (octahedral) and {110} (rhombododecahedral) present a higher photo (electro)catalytic activity towards CO2RRs (CO 2 Reduction Reaction) than {100} (cubic). Two frustules (the siliceous skeleton of microalgae Diatoms) having a different morphology, namely: Navicula sp. (Nsp, elongated pore-shape) and Conticri...
Research Proposal
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Plasmons Laser Plasma Electrodynamics II. Nonlinear aspects.
Article
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The ultralight dark photon is an intriguing dark matter candidate. The interaction between visible and dark photons is introduced by the gauge kinetic mixing between the field strength tensors of the Abelian gauge groups in the Standard Model and dark sector. Relativistic electrodynamics was generalized to quantum electromagnetodynamics (QEMD) in t...
Research Proposal
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Is feasible a plasmon laser? If that it is possible then we can get fusion energy focusing plasmon lasers?
Preprint
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This work advances our 2D scalar electrodynamics (SED) model, a relativistic analogue of type-II superconductivity, by implementing a cylindrical coordinate representation. This adaptation addresses the importance of cylindrical symmetry in describing 2D systems, especially those featuring Dirac fermion bound states in magnetic fields. Focusing on...
Article
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Classical studies such as the conservation laws and the radiation fields are investigated in the pseudo-electrodynamics. We explore the action symmetry under infinitesimal transformations to obtain the energy–momentum, the Belinfante–Rosenfeld, and the general angular momentum tensors for this nonlocal planar electrodynamics. Through the results su...
Article
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Electrodynamic interactions between biomolecules are of potential biological interest for temporal and spatial molecular controls, warranting investigation of their activation through various mechanisms in living systems. Using a light-harvesting protein in the phycobilisome antenna system of red algae, we proved that not only light exposure but al...
Article
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Objects with angular momentum (rotation) are known to exhibit an effect called Lense Thirring (LT) precession whereby locally inertial frames are dragged along the rotating spacetime. Such effect has been usually associated to celestial bodies, and especially studied in the case of black holes and neutron stars, but I show here that Lense Thirring...
Book
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The present book elicits the reasons for the second scientific revolution. According to Chapter 1, one has to abandon the "great genius" approach in favor of mundane Heidegger’s existential analytic with Dasein as “a way of life shared by the members of scientific community”. Scientific revolutions should be considered as clashes of diverse “mathem...
Preprint
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The Maxwell equations govern electrodynamics. But current laws—not the Maxwell equations—are used to design the circuits of our technology. Our goal is to derive and understand those current laws in the context of electrodynamics. Current Laws can be derived by taking the divergence of the Maxwell Ampere Law div curl B=0=div ( μ_0 (J+ε_0 ∂E⁄(∂t)))=...
Article
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The magnetotail current sheet plays a crucial role in substorm dynamics, affecting the entire magnetosphere. Formation and reconnection of thin (ion‐gyroscale) current sheets initiate magnetospheric substorms. Theoretical models suggest that a transient, demagnetized ion population is key element of the thin current sheet configuration. At lunar di...
Preprint
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Models of black holes that differ from idealized vacuum and electrovacuum solutions of Einstein's equations often contain parameters whose physical interpretation is unclear. However, to propose a black hole model for experimental verification, we must clearly understand which parameters describe the black hole and what physical constraints can be...
Article
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Tunning the metal‐support interaction is a common strategy to regulate the electro and geometric structure of supported metal; However, most of supports were limited to oxides and how the carbides tune the activity of supported metal in CO2 hydrogenation is still elusive. Herein, Pt nanoparticles dispersed on carbides were fabricated and examined i...
Article
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A highly efficient voltammetric sensor for L-dopa and tyramine (TYM) has been developed based on a nanocomposite of poly(tannic acid) (p(TA)) and electrochemically reduced graphene oxide (rGO). The nanocomposite-modified electrode- p(TA)-rGO/GCE has been prepared using an electropolymerization procedure and is characterized by several analytical te...
Preprint
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In this paper, we investigate regular black hole solutions in the (2+1)-dimensional versions of General Relativity and $f(R, T)$ gravity, both coupled to nonlinear electrodynamics. By admitting that the matter content that generates such geometries satisfies the Maxwell limit condition, we obtain a class of regular black holes that give rise to new...
Article
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In recent years, the development of efficient catalysts for photo−/electro−catalytic CO2 reduction reaction (CO2RR) has become a major research focus due to growing environmental concerns and energy demands. Dual−atom catalysts (DACs), composed of two metal atoms with suitable metal−metal distance integrated into the supports, have shown great prom...
Article
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The paper discusses a mathematical model for non-Michaelis–Menten kinetics, which involves a substrate forming a complex with the immobilized catalyst. A new Hosoya polynomial approximation method (HPAM) is applied for solving the reaction–diffusion equations. Analytical expressions are established to the nonlinear reaction–diffusion equation arisi...
Article
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Physical insight into a material can be first gained by its color, as the reflectance spectrum of an object reflects its microstructure and complex refractive indices. Here, we present a comprehensive overview of electrodynamics and optics related to reflectance spectra and color. We provide an open-source Python code for simulating reflectance spe...
Research
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This paper presents a theoretical framework and conceptual product design for a trans medium craft that integrates advanced scalar field physics, electromagnetic propulsion, and molecular-level membrane engineering. At the core of this design lies a bio-inspired, porphyrin-based crystalline membrane system, capable of resonant coupling with electri...
Article
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Our Special Issue aims to publish original research or review papers on the removal of pollutants from water through adsorption and degradation processes. Topics of interest for publication include, but are not limited to, various pollutants from different types of water, with diverse sorbents, focused both on the sorbents’ nature and the examinati...
Preprint
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Modern phased array incoherent scatter radar (ISR) systems consist of several thousand phased-array antenna elements. Next-generation phased-array ISR systems are shifting towards multistatic setups consisting of three sites, such as EISCAT_3D with sites in Finland, Norway, and Sweden. The tremendous flexibility that these ISR systems afford also p...
Article
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In their seminal 1992 paper, Bañados, Teitelboim and Zanelli (BTZ) proposed a simple charged generalization of what is now known as the spinning BTZ black hole, the proposal being that a rotating metric can be supported by a ‘static vector’ potential. While with such an ansatz the Einstein equations are satisfied, and the corresponding energy-momen...
Article
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This investigation is inspired by the first flyby of NASA’s ARTEMIS (Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon’s Interaction with the Sun) mission, which observed the signatures of electrostatics waves in the lunar wake region. We have developed a lunar plasma model consisting of protons, α-particles, an electron beam o...
Conference Paper
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Piezoelectric vibration energy harvesters are critical for self-powered sensing on aircraft, however tuning a harvester to the desired source frequency is challenging. This is because aerospace ap-plications usually require energy harvesters to be small, lightweight and highly durable, making mechanical tuning methods impractical. Frequency tuning...
Article
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Multiple external representations (e. g. diagrams, equations) and their interpretations play a central role in science and science learning as research has shown that they can substantially facilitate the learning and understanding of science concepts. Therefore, multiple and particularly visual representations are a core element of university phys...
Preprint
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Resumo: Esta pesquisa, de caráter qualitativo, apresenta os resultados de uma proposta didática voltada para o ensino dos princípios básicos da Eletrodinâmica a partir do debate acerca da energia eólica como fonte limpa e renovável capaz de reduzir os impactos do homem no meio ambiente. Para isso, foi idealizada uma sequência didática centrada em d...
Article
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Electrons in low-dimensional materials driven out of equilibrium by a strong electric field exhibit intriguing effects that have direct analogues in high-energy physics. In this work we demonstrate that two of these effects can be observed in graphene, leading to relevant implications for light-matter interactions at the nanoscale. For doped graphe...
Article
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Metal organic frameworks (MOFs) are promising materials for (electro)catalysis as they can improve stability, reusability, and catalytic current densities of molecular catalysts, thereby combining the advantages of homogeneous‐ and heterogeneous catalysts. However, much is unknown about the effects of confinement of a catalyst within an MOF on the...
Preprint
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In a recent study, we introduced a relativistic model of type-II superconductivity in the framework of scalar electrodynamics (SED). The model extended the principles of the nonrelativistic Ginzburg-Landau (GL) theory to explore the electromagnetic properties of superconductors in a relativistic context. Building on this work, we now propose a gene...
Preprint
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This paper presents a formal response to Daniel Maclay's (2019) comparative analysis of vacuum fluctuations in the hydrogen atom as modeled by quantum electrodynamics (QED) and stochastic electrodynamics (SED). While QED models the hydrogen ground state with extraordinary precision, SED, a classical framework augmented by a stochastic vacuum field,...
Preprint
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The Radial Acceleration Relation (RAR) follows from Milgromian gravitation (MoND). Velocity dispersion data of many dwarf spheroidal galaxies (dSphs) and galaxy clusters have been reported to be in tension with it. We consider the Generalized Poisson Equation (GPE), expressed in terms of the p-Laplacian, which has been applied in electrodynamics. W...
Article
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Very long baseline interferometry observations reveal that relativistic jets like the one in M87 have a limb-brightened, double-edged structure. Analytic and numerical models struggle to reproduce this limb-brightening. We propose a model in which we invoke anisotropy in the distribution function of synchrotron-emitting nonthermal electrons such th...
Article
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Axion insulators represent a unique class of magnetic topological phases, linking the two-dimensional quantum anomalous Hall effect to the magnetic higher-order phase of three-dimensional topological insulators. Within axion insulators, axion electrodynamics exhibits novel topological magneto-electric phenomena such as quantized Faraday and Kerr ro...
Article
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In this work, we consider a static wormhole in Bopp-Podolsky electrodynamics and convert it into its rotating counterpart by reducing it into Morris-Thorne form. We further study the null geodesics and effective potential along with the shadows for inner and outer unstable orbits for specific choices of parameters. It is found that for some cases s...
Article
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Potentials arising in ultraviolet-completed field theories can be devoid of singularities, and hence render spacetimes simply connected. This challenges the notion of topological invariants considered in such scenarios. We explore the classical implications for (i) electrodynamics in flat spacetime, (ii) ultrarelativistic gyratonic solutions of wea...
Article
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We exhibit the first analogue model of a rotating black hole constructed in the framework of nonlinear electrodynamics. The background electromagnetic field is assumed to be algebraically special and adapted to a geodesic shear-free congruence of null rays in Minkowski spacetime, the Kerr congruence. The corresponding optical metric has a Kerr–Schi...
Article
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We show the negative results of applying the Principle of Stationary Action in obtaining the conservation laws of energy in the electrodynamics and in the theory of gravitation. The natural derivation of these laws is demonstrated.
Preprint
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Spin-orbit coupling in thin HgTe quantum wells results in a relativistic-like electron band structure, making it a versatile solid state platform to observe and control non-trivial electrodynamic phenomena. Here we report an observation of universal terahertz (THz) transparency determined by fine-structure constant $\alpha \approx 1/137$ in 6.5 nm-...
Article
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Super-resolution optical imaging has become a prominent tool in life and material sciences, allowing one to decipher structures at increasingly greater spatial detail. Among the utilized techniques in this field, super-resolution optical fluctuation imaging (SOFI) has proved to be a valuable approach. A major advantage of SOFI is its less restricti...
Article
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Born–Infeld nonlinear electrodynamics is widely used in physics and mathematics. In this paper, the theory of Born–Infeld-type nonlinear electrodynamics coupled with general relativity is studied in a static spherically symmetric space–time. We obtain various charged black hole solutions and relegated or regularized curvature singularities. Moreove...
Preprint
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The Lee-Wick pseudo-quantum electrodynamics in the presence of a Chern-Simons term is studied in this paper. The paper starts with a non-local lagrangian density that sets the Lee-Wick electrodynamics defined on a bidimensional space added to the Chern-Simons topological term. We investigate classical aspects as the potential energy for the interac...
Article
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In this work, we explore the implications of the Cohen and Glashow Very Special Relativity (VSR) theory, a framework that introduces Lorentz invariance violation through the presence of a preferred direction. Our analysis focuses on the impact of VSR on the Cherenkov angle, revealing modifications to the dispersion relation of particles, particular...
Preprint
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We propose a novel mechanism by which spontaneous vectorization-analogous to spontaneous scalarization in scalar-tensor theories-emerges in gravitational systems coupled with nonlinear electrodynamics (NLED). This effect is shown to arise dynamically in certain modified theories of gravity with non-minimally coupled vector fields, resulting in stab...
Article
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The thermal decay characteristics of braking performance in eddy current retarders exhibit significant correlation with heat dissipation efficiency, wherein the rotor disc structural design directly impacts forced convection cooling effectiveness. Based on structural optimization principles, this study proposes an improved rotor disc configuration...
Article
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El objetivo de la investigación fue realizar el diagnóstico del manejo de los residuos de aparatos eléctricos y electrónicos (RAEE) domiciliarios en la población urbana de Jaén, surgiendo a partir de la problemática del aumento exponencial de RAEE y consigo su inadecuado manejo, especialmente en la ciudad de Jaén. La aplicación de encuestas se efec...
Preprint
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The present work is aimed at defining the behavior of the electromagnetic field near the edge of a resistive half-plane, taken separately, as well as in conjunction with a perfectly conducting half-plane. The efficiency of accounting for the established field behavior while finding the solution of boundary problems of electrodynamics is illustrated...
Article
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The influence of particle concentration on electrodynamic characteristics of anisotropic media in the mode of low-frequency interaction of electromagnetic waves has been studied. The characteristics of rocks above hydrocarbons have been studied taking into account the requirements of multifactor analysis. The ranges of electron and ion concentratio...
Preprint
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We investigate photon geodesics in a static black hole spacetime sourced by nonlinear electrodynamics (NLED)--a model inspired by the confinement of heavy quark-antiquark pairs that recovers Maxwell's theory in the strong-field limit. This solution generalizes the Schwarzschild metric by introducing both an electric charge $Q$ and a nonlinear param...
Article
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The research involves generation of textured surfaces using micro-wire electro discharge machining (µ-WEDM) for controlling boundary layers, drag force and heat transfer during fluid flow over the textured surfaces. Numerical analysis of the drag experienced by air, flowing over the microtextured surfaces, is initially carried out using a Large Edd...
Preprint
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This paper applies the Oscillatory Dynamics Transductive-Bridging Theorem (ODTBT) to Eliade Stefanescu's New Sub Relativistic Quantum Mechanics, which models quantum particles as distributions of continuous matter across conjugate coordinate and momentum spaces. By embedding Lagrangian-driven phase dynamics into relativistic distributions, Stefanes...
Preprint
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These are the extended lecture notes for a minicourse presented at the I S\~ao Paulo School on Gravitational Physics discussing the Bondi--Metzner--Sachs (BMS) group, the group of symmetries at null infinity on asymptotically flat spacetimes. The BMS group has found many applications in classical gravity, quantum field theory in flat and curved spa...
Article
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The article contains the results of research on the effect of abrasive flow machining on the roughness and microhardness of the surface of small channels (holes) in samples of workpieces made of 12X18N10T steel. Empirical dependences of the change in roughness and microhardness of the surface of a small channel on the degree of filling of the worki...
Article
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Currently, one of the ways to quickly remove spent nanosatellites from orbit is the use of non-insulated conductive tether, during the movement of which an electrodynamic braking force arises in the Earth's magnetic field, transferring the nanosatellite to the trajectory of descent into the atmosphere. In this paper, the possibility of determining...
Article
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The axion is a hypothetical fundamental particle that is conjectured to correspond to the coherent oscillation of the θ field in quantum chromodynamics1,2. Its existence would solve multiple fundamental questions, including the strong CP problem of quantum chromodynamics and dark matter, but the axion has never been detected. Electrodynamics of con...
Article
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A one-loop Dyson-Schwinger-like resummation scheme is applied to scalar high-electric-charge compact objects (HECOs), extending previous work on spin- 1 2 case. The electromagnetic interactions of HECOs are considered within the framework of strongly coupled scalar quantun electrodynamics. The resummation amounts to determining nontrivial ultraviol...
Article
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Electro/photocatalytic C-N coupling acts as a key build-block to the next generation of chemicals like amides for wide applications in energy, pharmaceuticals and chemical industries. However, the uncontrolled intermediates coupling challenges the efficient amide production regarding yield or selectivity. Here we propose a photocatalytic radical ad...
Article
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In the present work we consider features of localization of charged particles in a vertical linear quadrupole electrodynamic trap with a single end-cap electrode (‘cup-trap’). We qualitatively describe the end-cap field effect on the radial trapping process and numerically calculate the stability diagrams in the trap. Depending on the axial oscilla...
Article
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A novel photonic scheme for the simultaneous generation of microwave amplitude shift keying (ASK) and frequency shift keying (FSK) signal based on gain switching in Vertical Cavity Surface Emitting Laser (VCSEL) is proposed, for the first time. In this approach, gain switched VCSEL is utilized to produce optical frequency comb (OFC) and the linearl...
Article
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Relativity theory based on a single transformation law (STL) for 4-vectors and tensors under universal rotation matrix (URM) on a unit circle satisfies principle of relativity, conservation laws and new symmetry valid for v<c, v = c and v>c. This model can be called as relativity theory for all velocities (RTAV). The framework of relativity theory...
Article
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Anion adsorption is an important phenomenon in surface science, electrochemistry, and catalysis, where it can dictate (electro)catalyst performance and corrosion resistance. In recent work, we found that the adsorption energies of carboxylate anions to a metal electrode were linearly correlated with their acid dissociation constant (pKa) and electr...
Article
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We study the behavior of electromagnetic waves near the interface between two media: a dielectric medium and a conducting medium. Solving this problem within the framework of classical electrodynamics, we obtain results that coincide with the known ones, namely: (1) By comparison of the solution to this problem—when obtained within the framework of...
Article
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The performance of metal hydride batteries depends on their electrochemical and kinetic behaviour, which varies with the state of charge (SoC). This study explores these characteristics in nickel-metal hydride batteries with A2B7 and AB5 electrodes, focusing on how SoC influences ion diffusion and charge transfer kinetics of the batteries. Electro¬...
Article
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The interlayer connection of circuits within stretchable electronic devices is crucial for enhancing their performance. Conventional methods for interlayer circuit connections are fragile and prone to mechanical deformation, prompting the need for new approaches. Although various methods have been proposed for creating interconnections in stretchab...
Preprint
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We investigate spontaneous vectorization in the Einstein-Born-Infeld-Vector (EBIV) model, where a massless vector field is nonminimally coupled to a nonlinear Born-Infeld (BI) electromagnetic field. This coupling results in an effective mass for the vector field in a Born-Infeld black hole (BIBH) background, triggering tachyonic instability. We num...
Poster
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In atmospheric air, a micrometric aluminum droplet burns in a regime directed by diffusivity and the condensed combustion products (CCP), alumina, establish a cloud encircling the droplet. As oxide melting and volatilization temperatures, reaction rates, and diffusivity are contingent on pressure, it is crucial to characterize the effect of ambient...
Article
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Relativity theory based on a single transformation law (STL) for 4-vectors and tensors under universal rotation matrix (URM) on a unit circle satisfies principle of relativity, conservation laws and new symmetry valid for v<c, v = c and v>c. This model can be called as relativity theory for all velocities (RTAV). The framework of relativity theory...
Preprint
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Gaseous molecules are an inherent byproduct of (electro-)chemical reactions in lithium-ion battery cells during both formation cycles and long-term operation. While monitoring gas evolution can help understand battery chemistry and predict battery performance, the complex nature of gas dynamics makes conventional mass spectrometry approaches insuff...
Article
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An important part for material modeling is the consideration of electromagnetic fields. In this paper, we add them to Hamilton’s principle for mechanical and thermal fields. We begin with a brief introduction to the electric and magnetic limit cases, which allows a non-relativistic formulation. After introducing the thermodynamic fundamentals, we p...
Article
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The geometric parameters of the Null-Flux coil (NFC) are crucial to the load capacity and economic viability of electrodynamic suspension (EDS) systems. This study investigates the influence of NFC geometry on the electromagnetic force characteristics in EDS systems. Through the electromagnetic modeling of EDS mechanisms, an analytical model for ED...
Article
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This study investigates the variation of Total Electron Content (TEC) over South Africa during the geomagnetic superstorm of May 10 - 13, 2024. This study aims to analyze the variation of TEC over South Africa during the May 10-13, 2024, geomagnetic superstorm using data from the IRI-2020 model, GNSS-based TEC measurements, and other geomagnetic pa...
Article
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Ultrathin amorphous alumina layers are excellent barriers making them ideal (electro)catalyst overlayers to prevent undesirable side‐reactions, e.g. in O2‐containing environments. Here, 2.5, 5, and 10 nm ultrathin Al2O3 and 2Al2O3‐3SiO2 (mullite) films are deposited onto Pt electrodes using pulsed laser deposition to evaluate their permeability to...
Preprint
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In this work, we explore the influence of nonlinear electrodynamics (NED) on the quasi-periodic oscillations (QPOs) of a magnetic charged black hole by analyzing the motion of test particles and their epicyclic frequencies. Starting from the effective potential, angular momentum, and energy of circular orbits, we examine how the NED parameter b alt...