The Helmholtz theorem and retarded fieldsTextbooks frequently use the Helmholtz theorem to derive expressions for the electrostatic and magnetostatic fields but they do not usually apply this theorem to derive expressions for the…Ricardo Heras·Sep 24, 2016SaveLearn
Memory in random bouncing ball dynamicsThe bouncing of an inelastic ball on a vibrating plate is a popular model used in various fields, from granular gases to nanometer-sized mechanical contacts. For random plate motion, so far, the…C Zouabi, J Scheibert, J Perret-Liaudet·Sep 23, 2016SaveLearn
Confining rigid balls by mimicking quadrupole ion trappingThe rotating saddle not only is an interesting system that is able to trap a ball near its saddle point, but can also intuitively illustrate the operating principles of quadrupole ion traps in modern…Wenkai Fan, Li Du, Sihui Wang et al.·Sep 23, 2016SaveLearn
Optical Measurement of In-plane Elastic Waves in Mechanical Metamaterials Through Digital Image CorrelationWe report on a Digital Image Correlation-based technique for the detection of in-plane elastic waves propagating in structural lattices. The experimental characterization of wave motion in lattice…Marshall Schaeffer, Giuseppe Trainiti, Massimo Ruzzene·Sep 20, 2016SaveLearn
The Planck Blackbody Spectrum Follows from the Structure of Relativistic SpacetimeHere we show that within classical physics, the Planck blackbody spectrum can be derived directly from the structure of relativistic spacetime. In noninertial frames, thermal radiation at positive…Timothy H. Boyer·Sep 20, 2016SaveLearn
Is Feynman's Analysis of Electrostatic Screening Correct?In a recent paper on electrostatic shielding, Chapman, Hewett and Trefethen present arguments that the analysis of this effect by Feynman is incorrect. Feynman analyzed shielding by a row of…Kris Subbarao, Sukhbir Mahajan·Sep 18, 2016SaveLearn
Some comments on the electrostatic forces between circular electrodesWe study the force between two circular electrodes in different configurations. A formula analogous to Kelvin's formula for the spheres is given in the case of equal disks held at the same…F. Maccarrone, G. Paffuti·Sep 16, 2016SaveLearn
Phononic High Harmonic GenerationThis paper reports experimental evidence for phononic low-order to high-order harmonic conversion leading to high harmonic generation. Phononic high harmonic generation is mediated by a threshold…Adarsh Ganesan, Cuong Do, Ashwin A. Seshia·Sep 15, 2016SaveLearn
A two-way model for nonlinear acoustic waves in a non-uniform lattice of Helmholtz resonatorsPropagation of high amplitude acoustic pulses is studied in a 1D waveguide connected to a lattice of Helmholtz resonators. An homogenized model has been proposed by Sugimoto (J. Fluid. Mech.,…Jean-François Mercier, Bruno Lombard·Sep 13, 2016SaveLearn
Acoustic quasi-lossless transmission in arbitrary pathway of networkAcoustic metamaterials have exhibited extraordinary possibilities to manipulate the propagation of the sound wave. Up to now, it is still a challenge to control the propagation of the sound wave in…Hongqing Dai, Tingting Liu, Baizhan Xia et al.·Sep 13, 2016SaveLearn
Constitutive relations for electromagnetic field in a form of 6× 6 matrices derived from the geometric algebraTo have a closed system, the Maxwell equations should be supplemented by constitutive relations which connect the primary electromagnetic fields (,) with the secondary ones (,)…A. Dargys·Sep 12, 2016SaveLearn
Coupling cavity model for circular cylindrical waveguide with uniform cross sectionWe developed the general approach that gives possibility to calculate the coupling coefficients for arbitrary chain of resonators without using the great number of eigen functions. For understanding…M. I. Ayzatsky, V. V. Mytrochenko·Sep 12, 2016SaveLearn
An asymptotically exact theory of functionally graded piezoelectric shellsAn asymptotically exact two-dimensional theory of functionally graded piezoelectric shells is derived by the variational-asymptotic method. The error estimation of the constructed theory is given in…Khanh Chau Le·Sep 11, 2016SaveLearn
Local equilibria and state transfer of charged classical particles on a helix in an electric fieldWe explore the effects of a homogeneous external electric field on the static properties and dynamical behavior of two charged particles confined to a helix. In contrast to the field-free setup which…J. Plettenberg, J. Stockhofe, A. V. Zampetaki et al.·Sep 9, 2016SaveLearn
Controlling flexural waves in semi-infinite platonic crystalsWe address the problem of scattering and transmission of a plane flexural wave through a semi-infinite array of point scatterers/resonators, which take a variety of physically interesting forms. The…Stewart G. Haslinger, Natasha V. Movchan, Alexander B. Movchan et al.·Sep 7, 2016SaveLearn
Topology optimization of microwave waveguide filtersWe present a density based topology optimization approach for the design of metallic microwave insert filters. A two-phase optimization procedure is proposed in which we, starting from a uniform…Niels Aage, Villads Egede Johansen·Sep 7, 2016SaveLearn
Pythagorean means and Carnot machines: When music meets heatSome interesting relations between Pythagorean means (arithmetic, geometric and harmonic means) and the coefficients of performance of reversible Carnot machines (heat engine, refrigerator and heat…Ramandeep S. Johal·Sep 5, 2016SaveLearn
Integral equations and boundary-element solution for static potential in a general piece-wise homogeneous volume conductorBoundary element methods (BEM) are used for forward computation of bioelectromagnetic fields in multi-compartment volume conductor models. Most BEM approaches assume that each compartment is in…Matti Stenroos·Sep 5, 2016SaveLearn
Theory of Double Ladder Lumped Circuits With Degenerate Band EdgeA conventional periodic LC ladder circuit forms a transmission line that has a regular band edge between a pass and a stop band. Here for the first time we develop the theory of simple yet…Jeff Sloan, Mohamed A. K. Othman, Filippo Capolino·Aug 30, 2016SaveLearn
Identifying space-dependent coefficients and the order of fractionality in fractional advection diffusion equationTracer tests in natural porous media sometimes show abnormalities that suggest considering a fractional variant of the Advection Diffusion Equation supplemented by a time derivative of non-integer…Boris Maryshev, Alain Cartalade, Christelle Latrille et al.·Aug 30, 2016SaveLearn
Polarization Control by Using Anisotropic 3D Chiral StructuresDue to the mirror symmetry breaking, chiral structures show fantastic electromagnetic (EM) properties involving negative refraction, giant optical activity, and asymmetric transmission. Aligned…Menglin L. N. Chen, Li Jun Jiang, Wei E. I. Sha et al.·Aug 29, 2016SaveLearn
Nonreciprocal Nongyrotropic Magnetless MetasurfaceWe introduce a nonreciprocal nongyrotropic magnetless metasurface. In contrast to previous nonreciprocal structures, this metasurface does not require a biasing magnet, and is therefore lightweight…Sajjad Taravati, Bakhtiar A. Khan, Shulabh Gupta et al.·Aug 25, 2016SaveLearn
A rotational traveling wave based levitation device - Modeling, design, and controlDescribed is a device acting on an acoustically levitated object by manipulating the pressure and flow of a thin layer of air such that its rotation can be precisely controlled without mechanical…Ran Gabai, Dotan Ilssar, Ran Shaham et al.·Aug 24, 2016SaveLearn
Ambiguity in deriving Larmor's formula from the LAD equation of motionThe power radiated by a moving charge is given by Larmor's formula which can be derived by integrating the Liénard-Wiechert potential over the whole past history of the charge. However,…Sofiane Faci, José A. Helayël-Neto·Aug 23, 2016SaveLearn
On the physical limitations for radio frequency absorption in gold nanoparticle suspensionsThis paper presents a study on the physical limitations for radio frequency absorption in gold nanoparticle suspensions. A canonical spherical geometry is considered consisting of a spherical…Sven Nordebo, Mariana Dalarsson, Yevhen Ivanenko et al.·Aug 23, 2016SaveLearn