Transitions and singularities during slip motion of rigid bodiesThe dynamics of moving solids with unilateral contacts are often modeled by assuming rigidity, point contacts, and Coulomb friction due to the simplicity of these models. The canonical example of a…Peter L. Varkonyi·Aug 31, 2017SaveLearn
Thresholds for hanger slackening and cable shortening in the Melan equation for suspension bridgesThe Melan equation for suspension bridges is derived by assuming small displacements of the deck and inextensible hangers. We determine the thresholds for the validity of the Melan equation when the…Filippo Gazzola, Gianmarco Sperone·Aug 31, 2017SaveLearn
Interaction between two point-like charges in nonlinear electrostaticsWe consider two point-like charges in electrostatic interaction between them within the framework of a nonlinear model, associated with QED, that provides finiteness of their field energy. We find…A. I. Breev, A. E. Shabad·Aug 22, 2017SaveLearn
Microscopic theory of refractive index applied to metamaterials: Effective current response tensor corresponding to standard relation n2 = eff μeffIn this article, we first derive the wavevector- and frequency-dependent, microscopic current response tensor which corresponds to the "macroscopic" ansatz $ D = 0…G. A. H. Schober, R. Starke·Aug 17, 2017SaveLearn
About conservation the angular momentum for asymmetric tensors in electrodynamicsIt is customary to assume that the law of conservation of the angular momentum is violated for an asymmetric energy-momentum tensors. This is the reason for criticizing the Minkowski tensor and other…Yurii A. Spirichev·Aug 15, 2017SaveLearn
Casimir-Polder energy for axially symmetric systemsWe develop a formalism suitable for studying Maxwell's equations in the presence of a medium that is axially symmetric, in particular with respect to Casimir-Polder interaction energies. As an…K. V. Shajesh, Prachi Parashar, Iver Brevik·Aug 14, 2017SaveLearn
From rods to blobs: When geometry is irrelevant for heat diffusionThermal systems are an attractive setting for exploring the connections between the lumped-element approximations of elementary circuit theory and the partial-differential field equations of…Matthew Frick, Swapnil Gupta, John Bechhoefer·Aug 11, 2017SaveLearn
Motion of a rod pushed at one point in a weightless environment in spaceWe analyze the motion of a rod floating in a weightless environment in space when a force is applied at some point on the rod in a direction perpendicular to its length. If the force applied is at…Ashok K. Singal·Aug 7, 2017SaveLearn
Canonical Transformation of Potential Model Hamiltonian Mechanics to Geometrical Form IUsing the methods of symplectic geometry, we establish the existence of a canonical transformation from potential model Hamiltonians of standard form in a Euclidean space to an equivalent geometrical…Y. Strauss, L. P. Horwitz, A. Yahalom et al.·Aug 2, 2017SaveLearn
Rainbow-trapping absorbers: Broadband, perfect and asymmetric sound absorption by subwavelength panels with ventilationPerfect, broadband and asymmetric sound absorption is theoretically, numerically and experimentally reported by using subwavelength thickness panels in a transmission problem. The panels are composed…Noé Jiménez, Vicent Romero-García, Vincent Pagneux et al.·Jul 31, 2017SaveLearn
Radiation Reaction in a Lorentz-Violating ElectrodynamicsWe study radiation reaction in a Lorentz violating electrodynamics [1]. We explore the possible modification whatsoever present in the radiation reaction force experienced by an accelerating charge…Veera Reddy Vippala, Sashideep Gutti, Asrarul Haque·Jul 29, 2017SaveLearn
Light emission by accelerated electric, toroidal and anapole dipolar sourcesEmission of electromagnetic radiation by accelerated particles with electric, toroidal and anapole dipole moments is analyzed. It is shown that ellipticity of the emitted light can be used to…V. Savinov·Jul 25, 2017SaveLearn
Floquet-Bloch waves in periodic networks of the Rayleigh beams: honeycomb systems, dispersion degeneracies and structured interfacesThe paper addresses novel dispersion properties of elastic flexural waves in periodic structures which possess rotational inertia. The structure is represented as a lattice, whose elementary links…L. Cabras, A. B. Movchan, A. Piccolroaz·Jul 24, 2017SaveLearn
Unidirectional zero reflection as gauged parity-time symmetryWe introduce here the concept of establishing Parity-time symmetry through a gauge transformation involving a shift of the mirror plane for the Parity operation. The corresponding unitary…James Gear, Yong Sun, Shiyi Xiao et al.·Jul 21, 2017SaveLearn
On the validity range of strain-gradient elasticity: a mixed static-dynamic identification procedureWave propagation in architectured materials, or materials with microstructure, is known to be dependent on the ratio between the wavelength and a characteristic size of the microstructure. Indeed,…Rosi Giuseppe, Placidi Luca, Auffray Nicolas·Jul 21, 2017SaveLearn
Charge densities that change linearly with time are effectively electrostaticWe consider classical electromagnetic systems in which the current density J does not change with time, but has nonzero divergence, so that electric charge does build up steadily over time.…Edward Parker·Jul 18, 2017SaveLearn
Introducing advanced concepts for young studentsThe compound Atwood's machine (Atm) problem is revisited in order to introduce young students on advanced concepts in Physics. Atm is an old-fashioned device. However, it allows us to speak about…Paulo de F Borges·Jul 18, 2017SaveLearn
Stored Electromagnetic Field Energies in General MaterialsThe most general expressions of the stored energies for time-harmonic electromagnetic fields are derived from the time-domain Poynting theorem, and are valuable in characterizing the energy storage…Wen Geyi·Jul 18, 2017SaveLearn
Homogenization of Maxwell's equations in layered system beyond static approximationThe propagation of electromagnetic waves through disordered layered system is considered in the paradigm of Maxwell's equations homogenization. In spite of the impossibility to describe the…Alexander M. Merzlikin, Roman S. Puzko·Jul 17, 2017SaveLearn
Dynamics of non-holonomic systems with stochastic transportThis paper formulates a variational approach for treating observational uncertainty and/or computational model errors as stochastic transport in dynamical systems governed by action principles under…Darryl D Holm, Vakhtang Putkaradze·Jul 15, 2017SaveLearn
Experimental and Theoretical Study of Magnetohydrodynamic Ship ModelsMagnetohydrodynamic (MHD) ships represent a clear demonstration of the Lorentz force in fluids, which explains the number of students practicals or exercises described on the web. However, the…David Cébron, Sylvain Viroulet, Jérémie Vidal et al.·Jul 10, 2017SaveLearn
The 0 to R1 cylinder radial coordinate transformation can not be used to make cylinder layer electromagnetic cloakIn this paper, we discover and proved that the 0 to R1 cylinder radial coordinate transformation can not be used to make cylinder layer electromagnetic EM cloak. Because in the 0 to R1…Jianhua Li, Feng Xie, Lee Xie et al.·Jul 8, 2017SaveLearn
Field patterns: a new type of wave with infinitely degenerate band structureField pattern materials (FP-materials) are space-time composites with PT-symmetry in which the one-dimensional- spatial distribution of the constituents changes in time in such a special manner to…Ornella Mattei, Graeme W. Milton·Jul 6, 2017SaveLearn
Gee-Haw Whammy DiddleGee-Haw Whammy Diddle is a seemingly simple mechanical toy consisting of a wooden stick and a second stick that is made up of a series of notches with a propeller at its end. When the wooden stick is…Martin Marek, Matej Badin, Martin Plesch·Jul 4, 2017SaveLearn
All-angle Negative Reflection with An Ultrathin Acoustic Gradient Metasurface: Floquet-Bloch Modes Perspective and Experimental VerificationMetasurface with gradient phase response offers new alternative for steering the propagation of waves. Conventional Snell's law has been revised by taking the contribution of local phase gradient…Bingyi Liu, Jiajun Zhao, Xiaodong Xu et al.·Jul 1, 2017SaveLearn