Pure moving optical media consisting of magnetochiral metasurfacesWe report numerical studies of microwave bianisotropies by magnetochiral (MCh) metasurfaces consisting of double Z-type gammadions with perpendicularly magnetized substrates. The metasurfaces'…Toshiyuki Kodama, Toshihiro Nakanishi, Kei Sawada et al.·Feb 28, 2024SaveLearn
Nonlinear Maxwell equationsBased on the analysis of biquaternion quadratic forms of field, it is shown that Maxwell equations arise as a consequence of the principle of conservation of the energy-momentum flow of field in…Sergey Y. Kotkovskiy·Feb 28, 2024SaveLearn
String Shooter's overall shape in ambient airIn this article, we study the behaviour of a looped string launched in ambient air using motorised wheels. We show that the loop, once it reaches its stationary state, is either in the pulley or the…M. Abello, J. Courson, A. Maury et al.·Feb 27, 2024SaveLearn
Electromagnetic signal propagation through lossy media via surface electromagnetic wavesA theory of surface electromagnetic waves in gradient media exhibiting arbitrary surface gradients of dielectric permittivity and magnetic permeability has been developed. Novel low-loss propagating…Igor I. Smolyaninov, Quirino Balzano, Vera N. Smolyaninova et al.·Feb 24, 2024SaveLearn
Enigmatic factor of 4/3 in electromagnetic momentum of a moving spherical capacitorThe electromagnetic energy-momentum of a moving charged spherical capacitor may be calculated by a 4-vector Lorentz transformation from the energy in the rest frame. However, energy-momentum of the…Ashok K. Singal·Feb 22, 2024SaveLearn
A mechanical analogue of electromagnetic induction for waves in a chiral elastic structureClassical Faraday's law on electromagnetic induction states that a change of magnetic field through a coil wire induces a current in the wire. A mechanical analogue of the Lorentz force, induced…Finn J. P. Allison, Ozgur Selsil, Stewart G. Haslinger et al.·Feb 20, 2024SaveLearn
Observation of disorder-induced boundary localizationBloch wavefunctions in crystals experience localization within the bulk when disorder is introduced, a phenomenon commonly known as Anderson localization. This effect is considered universal, being…Bing-bing Wang, Zheyu Cheng, Hong-yu Zou et al.·Feb 16, 2024SaveLearn
Radiative-Conductive Heat Transfer Dynamics in Dissipative Dispersive Anisotropic MediaWe develop a self-consistent theoretical formalism to model the dynamics of heat transfer in dissipative, dispersive, anisotropic nanoscale media, such as metamaterials. We employ our envelope dyadic…Hodjat Mariji, Stanislav Maslovski·Feb 14, 2024SaveLearn
Bifurcations of an elastic disc coated with an elastic inextensible rodAn analytical solution is derived for the bifurcations of an elastic disc that is constrained on the boundary with an isoperimetric Cosserat coating. The latter is treated as an elastic circular rod,…Matteo Gaibotti, Sonia G. Mogilevskaya, Andrea Piccolroaz et al.·Feb 12, 2024SaveLearn
Extinction of guided light induced by coupled spiral meta-atom resonators at arbitrary order exceptional pointsExceptional points (EPs) in non-Hermitian systems can give rise to intriguing effects not available in conventional Hermitian systems due to their unusual properties. Using full-wave simulations, we…Chengzhi Zhang, Shubo Wang·Feb 8, 2024SaveLearn
Elastic wave imaging with Maxwell's fish-eye lensIn this paper, a modified Maxwell's fish-eye lens is proposed in order to achieve super-resolution imaging. This lens possesses elevated refractive index profile compared with the traditional…Liuxian Zhao, Chunlin Li, Xuxu Zhuang et al.·Feb 6, 2024SaveLearn
On the Continuity Equation in Space-Time Algebra: Multivector Waves, Poynting, Diffusion, and a Derivation of Maxwell's Equations by SymmetriesHistorically and to date, the continuity equation has served as a consistency criterion for the development of physical theories. Employing Clifford's geometric algebras, a system of continuity…Manuel Beato Vásquez, Melvin Arias Polanco·Feb 6, 2024SaveLearn
Classical Dynamical Symmetries and Geometry of TrajectoriesIt is shown that all spherical symmetric potentials are capable of producing dynamical symmetries in classical one-body motions, thanks to the inevitable existence of symmetry axes associated with…Christian Carimalo·Jan 30, 2024SaveLearn
Synchronization Behavior of Newton's CradleA Newton's cradle is a device that demonstrates conservation of momentum using a series of identical colliding pendula. Despite being a famous example that demonstrates the concept of momentum…Minseok Lee, Seokchan Hong·Jan 30, 2024SaveLearn
Homogenization of elastic grids containing rigid elementsThe inclusion of rigid elements into elastic composites may lead to superior mechanical properties for the equivalent elastic continuum, such as, for instance, extreme auxeticity. To allow full…Luca Viviani, Davide Bigoni, Andrea Piccolroaz·Jan 26, 2024SaveLearn
Wave propagation in three-dimensional fractional viscoelastic infinite solid bodyIn order to analyze the wave propagation in three-dimensional isotropic and viscoelastic body, the Cauchy initial value problem on unbounded domain is considered for the wave equation written as a…Slađan Jelić, Dušan Zorica·Jan 26, 2024SaveLearn
Generalized Friis Transmission Formula Using Active Antenna Available Power and Unnamed Power GainWe use the concept of active antenna available power to derive a generalization of the Friis transmission formula for multiport antenna systems. With beamformer weights chosen such that the array…Karl F. Warnick, Frederic Broyde, Lukas Jelinek et al.·Jan 24, 2024SaveLearn
Physical Origin of the Effective Parameters at Boundaries in Finite Difference SchemesUsing the Observable form of Maxwell's equations, we reveal that effective parameters at materials boundaries emerge naturally as anisotropic transfer functions. The complexity of the boundary…Sameh Y. ELnaggar, Yahia. M. Antar·Jan 21, 2024SaveLearn
Bayesian estimation of dissipation and sound speed in tube measurements using a transfer-function modelThis study discusses acoustic dissipation, which contributes to inaccuracies in impedance tube measurements. To improve the accuracy of these measurements, this paper introduces a transfer function…Ziqi Chen, Ning Xiang·Jan 19, 2024SaveLearn
A Modern Interpretation of Newton's Theorem of Revolving OrbitsNewton's Theorem of Revolving Orbits derives the force that is necessary to explain a particular precession that leaves the shape of an orbit unchanged. Newton showed that for an orbiting body…Nolan Samboy, Joseph Gallant·Jan 18, 2024SaveLearn
Vertical projectile motion taking into account the windWe consider the problem of the motion of a projectile thrown vertically upward from a surface. In addition to gravity, the drag force of the medium is taken into account, which is considered a…Peter Chudinov·Jan 17, 2024SaveLearn
Flutter instability in solids and structures, with a view on biomechanics and metamaterialsThe phenomenon of oscillatory instability called flutter' was observed in aeroelasticity and rotor dynamics about a century ago. Driven by a series of applications involving nonconservative…Davide Bigoni, Francesco Dal Corso, Oleg N. Kirillov et al.·Jan 13, 2024SaveLearn
Dynamics of elastic lattices with sliding constraintsThis study investigates the impact of sliders -- constraints acting on elastic rods allowing for a transverse displacement jump while maintaining axial and rotational displacement continuity -- on…L. Cabras, D. Bigoni, A. Piccolroaz·Jan 12, 2024SaveLearn
Modal decomposition synthesis for localized nonlinear losses at termination of a woodwind model: influence on sound characteristicsA sound synthesis model for woodwind instruments is developed using modal decomposition of the input impedance, accounting for viscothermal losses as well as localized nonlinear losses at the end of…N Szwarcberg, T Colinot, C Vergez et al.·Jan 11, 2024SaveLearn
The ZK Spiral Family of Trajectories and ForcesParticle trajectories in the form of a logarithmic spiral with specified angular time dependence, "ZK spirals," are shown to be analytic solutions for motion in non-central, but simple force…Joseph West·Jan 10, 2024SaveLearn