Acoustic wave polarization and energy flow in periodic beam lattice materialsThe free propagation of acoustic plane waves through cellular periodic materials is generally accompanied by a flow of mechanical energy across the adjacent cells. The paper focuses on the energy…Andrea Bacigalupoa, Marco Lepidi·Mar 2, 2018SaveLearn
Exact gravitational potential of a homogeneous torus in toroidal coordinates and a surface integral approach to Poisson's equationNew exact solutions are derived for the gravitational potential inside and outside a homogeneous torus as rapidly converging series of toroidal harmonics. The approach consists of splitting the…Matt Majic·Feb 28, 2018SaveLearn
High-order functional derivatives of the diffracted field according to the permittivity-contrast functionIn this work, we propose to extend an approach to calculate at any order (n), the functional derivative of the diffracted field with respect to the permittivity-contrast function. These derivatives…Slimane Arhab, Dimitrios Anagnostou, Maminirina Joelson·Feb 27, 2018SaveLearn
Reply to: "Section IV. G. Mitri's cross sections" in the paper titled "Multiple scattering and scattering cross sections" [J. Acoust. Soc. Am. 143, 995 (2018)]The aim of this note is to rebut some unsupported claims which cast suspicions on the results of the papers titled: "Extrinsic extinction cross-section in the multiple acoustic scattering by…F. G. Mitri·Feb 26, 2018SaveLearn
Micropolar modeling approach for periodic sandwich beamsWe develop a micropolar Timoshenko beam theory and use it to model web-core sandwich beams. The beam theory is derived by a vector approach and the general displacement solution to the governing…Anssi T. Karttunen, JN Reddy, Jani Romanoff·Feb 22, 2018SaveLearn
Calculation of apsidal precession via perturbation theoryThe calculus of apsidal precession frequencies of the planets is developed by means of a perturbation thecnique. A model of concentric rings (ring model), suitable for improving calculations, is…L. Barbieri, F. Talamucci·Feb 20, 2018SaveLearn
Uncovering Universal Wave Fluctuations In a Scaled Ray-Chaotic Cavity With Remote InjectionThe Random Coupling Model (RCM), introduced by Zheng, Antonsen and Ott, predicts the statistical properties of waves inside a ray-chaotic enclosure in the semi-classical regime by using Random Matrix…Bo Xiao, Thomas M. Antonsen, Edward Ott et al.·Feb 15, 2018SaveLearn
Interfacial waveforms in chiral lattices with gyroscopic spinnersWe demonstrate a new method of achieving topologically protected states in a discrete hexagonal lattice by attaching gyroscopic spinners, which bring chirality to the system. Dispersive features of…Marta Garau, Giorgio Carta, Michael Nieves et al.·Feb 15, 2018SaveLearn
Synchronization of a double pendulum with moving pivots: a study of the spectrumThe model we consider consists in a double pendulum set, where the pivot points are free to shift along a horizontal line. Moreover, the two pendula are coupled by means of a spring whose extremities…Federico Talamucci·Feb 14, 2018SaveLearn
An extended Lagrangian formalismA simple formal procedure makes the main properties of the lagrangian binomial extendable to functions depending to any kind of order of the time--derivatives of the lagrangian coordinates. Such a…Federico Talamucci·Feb 14, 2018SaveLearn
Platonic crystal with low-frequency locally resonant snail structures. Wave trapping, transmission amplification and shieldingWe propose a new type of platonic crystal. The proposed microstructured plate includes snail resonators with low-frequency resonant vibrations. The particular dynamic effect of the resonators are…M. Morvaridi, G. Carta, M. Brun·Feb 13, 2018SaveLearn
Storage of RF photons in minimal conditionsWe investigate the minimal conditions to store coherently a RF pulse in a material medium. We choose a commercial quartz as memory support because it is a widely available component with a high…J. -P. Cromières, T. Chanelière·Feb 9, 2018SaveLearn
Classical Electrodynamics of Extended BodiesWe study the classical electrodynamics of extended bodies. Currently, there is no self-consistent dynamical theory of such bodies in the literature. Electromagnetic energy-momentum is not conserved…P. D. Flammer·Feb 6, 2018SaveLearn
Isotropic Scattering in a Flatland Half-SpaceWe solve the Milne, constant-source and albedo problems for isotropic scattering in a two-dimensional "Flatland" half-space via the Wiener-Hopf method. The Flatland H-function is derived…Eugene d'Eon, M. M. R. Williams·Feb 3, 2018SaveLearn
An Improved Body Shape Definition for Acoustic GuitarsAcoustic guitar body shapes usually belong to one of a small number of families of body shapes. However, these shapes are not standardized or even precisely described in the literature on the…Mark French·Feb 1, 2018SaveLearn
Circumventing Magnetic Reciprocity: a Diode for Magnetic FieldsLorentz reciprocity establishes a stringent relation between electromagnetic fields and their sources. For static magnetic fields, a relation between magnetic sources and fields can be drawn in…J. Prat-Camps, P. Maurer, G. Kirchmair et al.·Jan 30, 2018SaveLearn
On a C-integrable equation for second sound propagation in heated dielectricsAn exactly solvable model in heat conduction is considered. The C-integrable (i.e., change-of-variables-integrable) equation for second sound (i.e., heat wave) propagation in a thin, rigid…Ivan C. Christov·Jan 30, 2018SaveLearn
Momentum exchange between an electromagnetic wave and a dispersive mediumWe present an elementary discussion of the momentum transferred by an electromagnetic wave propagating in a dispersive medium. Our analysis is based on Minkowski's electromagnetic momentum…Rodrigo Medina, J. Stephany·Jan 29, 2018SaveLearn
Results for Capacitances and Forces in cylindrical systemsIn this paper we report on some new results concerning the behavior of forces between two equal circular electrodes with finite thickness. We show that for close electrodes different scenarios can…Giampiero Paffuti·Jan 24, 2018SaveLearn
Using the Geometric Phase to Optimise Planar SomersaultsWe derive the equations of motion for the planar somersault, which consist of two additive terms. The first is the dynamic phase that is proportional to the angular momentum, and the second is the…William Tong, Holger R. Dullin·Jan 24, 2018SaveLearn
The Relativistic Point Charge Revisited : Novel FeaturesA fully relativistically covariant formulation of the classical Maxwell electrodynamics of an arbitrarily-moving point charge is presented, purely in terms of gauge invariant potentials without…Anarya Ray, Parthasarathi Majumdar, Zahid Ansari·Jan 23, 2018SaveLearn
The effect of liquid on the vibrational intensity of a wineglass at steady state resonanceAs a liquid is inserted into a wineglass, the natural frequency of the wineglass decreases. This phenomenon, known as pitch lowering, is well explained in past papers. However, previous literature…Junghwan Lee·Jan 23, 2018SaveLearn
Super Scatterers Based on Artificial Localized Magnon ResonancesThe interaction between electromagnetic waves and objects is strongly affected by the shape and material composition of the latter. Artificially created materials, formed by a subwavelength…Dmitry Filonov, Andrey Shmidt, Amir Boag et al.·Jan 23, 2018SaveLearn
On Huygens' Principle, Extinction Theorem, and Equivalence Principle (Inhomogeneous Anisotropic Material System in Inhomogeneous Anisotropic Environment)Huygens' principle (HP), extinction theorem (ET), and Franz's / Franz-Harrington formulation (FHF, which is a mathematical expression of surface equivalence principle) are the important…Renzun Lian·Jan 21, 2018SaveLearn
Elastic Purcell effectIn this work, we introduce an elastic analog of the Purcell effect and show theoretically that spherical nanoparticles can serve as tunable and robust antennas for modifying the emission from…Mikołaj K. Schmidt, L. G. Helt, Christopher G. Poulton et al.·Jan 15, 2018SaveLearn