Periodic strings: a mechanical analogy to photonic and phononic crystalsWe study a periodic vibrating string composed of a finite sequence of string segments connected periodically, with each segment characterized by a constant linear mass density. The main purpose is to…R. S. Pitombo, M. Vasconcellos, P. P. Abrantes et al.·Apr 10, 2022SaveLearn
Proposal to repeat the Abraham force experiment using giant permittivity materialsIn the more than 100 years-old Abraham-Minkowski problem in macroscopic electrodynamics, the issue of how to observe the so-called Abraham term $ f Aterm = [(μ-1)/c2]…Iver Brevik·Apr 8, 2022SaveLearn
Conformally mapped black hole effect in elastic curved continuumWe present a black hole effect by strategically leveraging a conformal mapping in elastic continuum with curved-space framework, which is less stringent compared to a Schwarzschild model transformed…Dongwoo Lee, Yiran Hao, Jeonghoon Park et al.·Apr 5, 2022SaveLearn
Critical Angle at a Moving Interface Formed by a Space-Time Modulation StepThis paper addresses the problem of wave scattering at a moving interface formed by a space-time modulation step. Specifically, it derives, using the technique of frame hopping with Lorentz…Zhiyu Li, Xikui Ma, Christophe Caloz·Mar 30, 2022SaveLearn
On the free rotation of a polarized spinning-top as a test of the correct radiation reaction torqueThe formula for dipole radiation reaction torque acting on a system of charges, and the Larmor-like formula for the angular momentum loss by this system, differ in the time derivative term which is…Askold Duviryak·Mar 30, 2022SaveLearn
On the helicity of radiative electromagnetic fieldsA relativistically invariant expression for the magnetic and electric helicities of free electromagnetic field through the currents, which created those field, are derived. It is demonstrated that…R M Feshchenko, A V Vinogradov·Mar 28, 2022SaveLearn
De la structure des espaces fibrés aux équations fondamentales de la physique. Une introductionThis text describes the fiber bundle structure and shows its universality for writing the laws of classical physics: newtonian, relativistic and quantum mechanics.Jean-Marc Rinkel·Mar 28, 2022SaveLearn
Unit Vectors for Similar Oblate Spheroidal Coordinates and Vector TransformationThe unit vectors transformation between the Cartesian and the novel Similar Oblate Spheroidal coordinates, and vice versa, is derived. It can help to transform vector fields between these two types…Pavel Strunz·Mar 27, 2022SaveLearn
The transient route to resonanceThe periodically driven harmonic oscillator with damping is one of the most elementary and trusted models in physics and normally applied in its steady state, disregarding specific initial conditions…Henning U. Voss·Mar 22, 2022SaveLearn
Oedometric compression of a granular material: computation of energies involved during breakage with a discrete element modellingA numerical model able to simulate the grain breakage with the discrete element method, using the "Non-Smooth Contact Dynamics" is presented. The model reproduces 3D grains having complex…François Nader, Claire Silvani, Irini Djeran-Maigre·Mar 21, 2022SaveLearn
Fluid dynamics described from new dynamic hypothesisIn order to address the difficulties of classical fluid kinematics in describing vorticity and the paradox of linear correlation between viscous force and vorticity in the Navier-Stokes equations,…Peng Shi·Mar 15, 2022SaveLearn
Analysing the accuracy of asymptotic approximations in incomplete contact problemsThe error incurred in the representation of the contact pressure at the edges of incomplete contacts by first order asymptotes is treated, and the maximum value of the relative error found for a…Matthew R. Moore, David A. Hills·Mar 14, 2022SaveLearn
Modeling of SolidsThis text is the support for the course of Modeling of Solids, of the Master of Mechanics of the University Paris-Saclay - Curriculum MMM: Mathematical Methods for Mechanics, held at Versailles. The…Paolo Vannucci·Mar 11, 2022SaveLearn
Ultra-high frequency vortex-based tweezers for microparticles manipulation with high spatial selectivity and nanoNewton forcesAcoustical tweezers based on focused acoustical vortices open some tremendous perspectives for the in vitro and in vivo remote manipulation of millimetric down to micrometric objects, with combined…Roudy Al Sahely, J-C Gerbedoen, Nikolay Smagin et al.·Mar 10, 2022SaveLearn
Non-inertial torques and the Euler equationThe fundamental equation describing the rotational dynamics of a rigid body is τ=d L / dt which is a straightforward consequence of the Newton's second law of motion and is only…Amir H. Fariborz·Mar 10, 2022SaveLearn
Quantitative characterisation of the layered structure within lithium-ion batteries using ultrasonic resonanceLithium-ion batteries (LIBs) are becoming an important energy storage solution to achieve carbon neutrality, but it remains challenging to characterise their internal states for the assurance of…Ming Huang, Niall Kirkaldy, Yan Zhao et al.·Mar 8, 2022SaveLearn
The Excited State Dynamics of a Mutagenic Cytidine Etheno Adduct Investigated by Combining Time-Resolved Spectroscopy and Quantum Mechanical CalculationsJoint femtosecond fluorescence upconversion experiments and theoretical calculations provide a hitherto unattained degree of characterization and understanding of the mutagenic etheno adduct…Paloma Lizondo-Aranda, Lara Martínez-Fernández, Miguel Miranda et al.·Mar 8, 2022SaveLearn
Topological waves guided by a glide-reflection symmetric crystal interfaceA domain wall separating two different topological phases of the same crystal can support the propagation of backscattering-immune guided waves. In valley-Hall and quantum-Hall crystal waveguides,…Julio Andrés Iglesias Martínez, Nicolas Laforge, Muamer Kadic et al.·Mar 5, 2022SaveLearn
Multifunctional acoustic holography based on compact acoustic geometric-phase meta-arrayOptical geometric-phase metasurface provides a robust and efficient means for light control by simply manipulating the spatial orientations of the in-plane anisotropic meta-atoms, where polarization…Bingyi Liu, Qunshuo Wei, Zhaoxian Su et al.·Mar 4, 2022SaveLearn
Space-charge-limited current density for nonplanar diodes with monoenergetic emission using Lie-point symmetriesUnderstanding space-charge limited current density (SCLCD) is fundamentally and practically important for characterizing many high-power and high-current vacuum devices. Despite this, no analytic…N. R. Sree Harsha, Jacob M. Halpern, Adam M. Darr et al.·Mar 3, 2022SaveLearn
Proof the non-existence of causal classical electrodynamics of point charged particlesUp until now, a consistent causal theory of point charged particles (for example electrons) interacting with electromagnetic field is not known. The well-known problem is that the standard Lorentz…Pawel Zin·Mar 3, 2022SaveLearn
Maxwell's equations for a mechano-driven, shape-deformable, charged-media system, slowly moving at an arbitrary velocity field v(r,t)The differential form of the Maxwell's equations was first derived based on an assumption that the media are stationary, which is the foundation for describing the electro-magnetic coupling…Zhong Lin Wang·Feb 21, 2022SaveLearn
Experimental Verification of Illusion Optics with Optical Null MediaWe experimentally show the results of the illusion device designed by the transformation optics (TO) technique. The coordinate transformation maps a zero thickness in virtual space to a finite region…Mohammad Mehdi Sadeghi, Hayrettin Odabasi·Feb 20, 2022SaveLearn
Lie symmetries, Jacobi last multipliers and new non-standard Lagrangians for dissipative dynamical systemsWe present a new method based on Lie symmetries and Jacobi last multipliers which allows one to find many non-standard Lagrangians for dissipative dynamical systems. In particular, it is demonstrated…Gabriel Gonzalez·Feb 20, 2022SaveLearn
On The Low Speed Limits of Lorentz's TransformationThis article contains a digest of the theory of electromagnetism and a review of the transformation between inertial frames, especially under low speed limits. The covariant nature of the…Hao Chen, Wei E. I. Sha, Xi Dai et al.·Feb 18, 2022SaveLearn