Longitudinal near-field coupling between acoustic resonators grafted onto a waveguideWe investigate longitudinal near-field coupling between acoustic resonators grafted onto a waveguide. Experiments are performed in the audible range with a simple acoustic system composed of a finite…Yan-Feng Wang, Vincent Laude·Jan 17, 2017SaveLearn
Capacitor-Loaded Spoof Surface Plasmon (SSP) for Flexible Dispersion Control and High-Selectivity FilteringThis letter proposes a new spoof surface plasmon transmission line (SSP-TL) using capacitor loading techniques. This new SSP-TL features flexible and reconfigurable dispersion control and highly…Xiaolan Tang, Qingfeng Zhang, Sanming Hu et al.·Jan 16, 2017SaveLearn
Symmetry recovery of exceptional points and their dynamical encircling in a two-state systemExceptional points are degeneracies in non-Hermitian systems. A two-state system with parity-time (PT) symmetry usually has only one exceptional point beyond which the eigenmodes are PT-symmetry…Xu-Lin Zhang, Shubo Wang, Wen-Jie Chen et al.·Jan 13, 2017SaveLearn
On the Accuracy of Equivalent Antenna RepresentationsThe accuracy of two equivalent antenna representations, near-field sources and far-field sources, are evaluated for an antenna installed on a simplified platform in a series of case studies using…Johan Malmström, Henrik Holter, B. L. G. Jonsson·Jan 12, 2017SaveLearn
Formation of Local Resonance Band Gaps in Finite Acoustic Metamaterials: A Closed-form Transfer Function ModelThe objective of this paper is to use transfer functions to comprehend the formation of band gaps in locally resonant acoustic metamaterials. Identifying a recursive approach for any number of…H. Al Ba'ba'a, M. Nouh, T. Singh·Jan 10, 2017SaveLearn
Giant Non-reciprocity Near Exceptional Point DegeneraciesWe show that gyrotropic structures with balanced gain and loss that respect anti-linear symmetries exhibit a giant non-reciprocity at the so-called exact phase where the eigenfrequencies of the…Roney Thomas, Huanan Li, F. M. Ellis et al.·Jan 10, 2017SaveLearn
Two-Dimensional Structure-Embedded Acoustic Lenses based on Periodic Acoustic Black HolesRecent studies have introduced a new class of two-dimensional acoustic metamaterials whose dispersion and propagation properties results from the use of geometric inhomogeneities in the form of…Hongfei Zhu, Fabio Semperlotti·Jan 8, 2017SaveLearn
Asymptotic orderings and approximations of the Master kinetic equation for large hard spheres systemsIn this paper the problem is posed of determining the physically-meaningful asymptotic orderings holding for the statistical description of a large N-body system of hard spheres, i.e.,…Massimo Tessarotto, Claudio Asci·Jan 7, 2017SaveLearn
Synthesis of Ultra-Wideband TEM Horn with Inhomogeneous Dielectric MediumThere were proposed new formulas for the dielectric medium permittivity distribution along spatial coordinates in the space between a linear TEM-horn's leafs, which were obtained according to the…G. K. Uskov, P. A. Kretov, V. A. Stepkin et al.·Jan 4, 2017SaveLearn
Comment on Jackson's analysis of electric charge quantization due to interaction with Dirac's magnetic monopoleIn J.D. Jackson's Classical Electrodynamics textbook, the analysis of Dirac's charge quantization condition in the presence of a magnetic monopole has a mathematical omission and an all too…Masud Mansuripur·Jan 3, 2017SaveLearn
Derivation of the Lorentz transformation without the use of Einstein's second postulateDerivation of the Lorentz transformation without the use of Einstein's Second Postulate is provided along the lines of Ignatowsky, Terletskii, and others. This is a write-up of the lecture first…Andrei Galiautdinov·Jan 1, 2017SaveLearn
The Theoretical Proof for GLHUA EM Invisible Double Layer Cloak By Using GL No Scattering Modeling and InversionIn this paper, we proposed the GLHUA double layer cloak; proved the properties of GLHUA double layer cloak; Using GL no scattering inversion and the pre cloak condition 6.1 to 6.4 in paper [1], we…Jianhua Li, Feng Xie, Lee Xie et al.·Dec 31, 2016SaveLearn
Harnessing Geometric Frustration to Form Band Gaps in Acoustic Channel LatticesWe demonstrate both numerically and experimentally that geometric frustration in two-dimensional periodic acoustic networks consisting of arrays of narrow air channels can be harnessed to form band…Pai Wang, Yue Zheng, Matheus C. Fernandes et al.·Dec 29, 2016SaveLearn
Rectification Effect on Solitary Waves in the Symmetric Y-shaped Granular ChainThe rectification effect on the propagation of solitary waves in the symmetric Y-shaped granular chain is numerically investigated in this Letter. A heterojunction with mass mismatch occurs at the…Xingyi Liu, Tengfei Jiao, Jiaye Su et al.·Dec 29, 2016SaveLearn
Classification of the classical SL(2,R) gauge transformations in the rigid bodyIn this paper we revisit the classification of the gauge transformations in the Euler top system using the generalized classical Hamiltonian dynamics of Nambu. In this framework the Euler equations…Manuel de la Cruz, Néstor Gaspar, Lidia Jiménez et al.·Dec 28, 2016SaveLearn
Extended optical theorem in isotropic solids and its application to the elastic radiation forceThe optical theorem is an important tool for scattering analysis in acoustics, electromagnetism, and quantum mechanics. We derive an extended version of the optical theorem for the scattering of…J. P. Leao-Neto, J. H. Lopes, G. T. Silva·Dec 27, 2016SaveLearn
Electromagnetic Wave Propagation in GLHUA Invisible Sphere by GL No Scattering Full Wave Modeling and InversionUsing GL no scattering full wave modeling and inversion, we create a GLHUA pre cloak electromagnetic (EM) material in the virtual sphere that makes the sphere is invisible. The invisible sphere is…Jianhua Li, Feng Xie, Lee Xie et al.·Dec 26, 2016SaveLearn
Equivalent quantum equations in a system inspired by bouncing droplets experimentsIn this paper we study a classical and theoretical system which consists of an elastic medium carrying transverse waves and one point-like high elastic medium density, called concretion. We compute…Christian Borghesi·Dec 22, 2016SaveLearn
Minimization of Antenna Quality FactorThe optimal currents on arbitrarily shaped radiators with respect to the minimum quality factor Q are found using a simple and efficient procedure. The solution starts with a reformulation of the…Miloslav Capek, Mats Gustafsson, Kurt Schab·Dec 22, 2016SaveLearn
Falling Coupled Oscillators & Trigonometric SumsA method for evaluating finite trigonometric summations is applied to a system of N coupled oscillators under acceleration. Initial motion of the nth particle is shown to be of the order…S. R. Holcombe·Dec 21, 2016SaveLearn
Asymmetric Micro-Doppler Frequency Comb Generation via Magneto-Electric CouplingElectromagnetic scattering from moving bodies, being inherently time-dependent phenomenon, gives rise to a generation of new frequencies, which could characterize the motion. While a standard linear…Dmitry Filonov, Ben Z. Steinberg, Pavel Ginzburg·Dec 21, 2016SaveLearn
Sound clocks and sonic relativitySound propagation within certain non-relativistic condensed matter models obeys a relativistic wave equation despite such systems admitting entirely non-relativistic descriptions. A natural question…Scott L. Todd, Nicolas C. Menicucci·Dec 20, 2016SaveLearn
The (not so simple!) chain fountainGiven a sufficiently long bead chain in a cup, if we pull the end of the chain over the rim of the cup, the chain tends to continuously flow out of the cup, under gravity, in a common siphon process.…Rogério Martins·Dec 20, 2016SaveLearn
A New Twisting Somersault - 513XDWe present the mathematical framework of an athlete modelled as a system of coupled rigid bodies to simulate platform and springboard diving. Euler's equations of motion are generalised to…William Tong, Holger R. Dullin·Dec 19, 2016SaveLearn
Saturn rings: fractal structure and random field modelThis study is motivated by the observation, based on photographs from the Cassini mission, that Saturn's rings have a fractal structure in radial direction. Accordingly, two questions are…Anatoliy Malyarenko, Martin Ostoja-Starzewski·Dec 16, 2016SaveLearn