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Classical Physics papers — page 101

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Analytic Materials
The theory of inhomogeneous analytic materials is developed. These are materials where the coefficients entering the equations involve analytic functions. Three types of analytic materials are…
Graeme W. MiltonOct 18, 2016
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Analytical approximation to the dynamics of a binary stars system with time depending mass variation
We study the classical dynamics of a binary stars when there is an interchange of mass between them. Assuming that one of the star is more massive than the other, the dynamics of the lighter one is…
Gustavo V. López, Elkin L. LópezOct 17, 2016
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Electromagnetic-Power-based Characteristic Mode Theory for Perfect Electric Conductors
In this paper, an ElectroMagnetic-Power-based Characteristic Mode Theory (CMT) for PEC systems (PEC-EMP-CMT) is built. The PEC-EMP-CMT is valid for the PEC systems which are surrounded by any…
Renzun LianOct 14, 2016
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Dynamic Nonlinear Focal Shift in Amplitude Modulated Moderately Focused Acoustic Beams
The phenomenon of the displacement of the position of the pressure, intensity and acoustic radiation force maxima along the axis of focused acoustic beams under increasing driving amplitudes…
Noé Jiménez, Francisco Camarena, Nuria González-SalidoOct 13, 2016
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Quasi-perfect absorption by sub-wavelength acoustic panels in transmission using accumulation of resonances due to slow sound
We theoretically and experimentally report sub-wavelength resonant panels for low-frequency quasi-perfect sound absorption including transmission by using the accumulation of cavity resonances due to…
Noé Jiménez, Vicent Romero-García, Vincent Pagneux et al.Oct 13, 2016
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Hybrid membrane resonators for multiple frequency asymmetric absorption and reflection in large waveguide
We report that Hybrid membrane resonators (HMRs) made of a decorated membrane resonator backed by a shallow cavity can function as Helmholtz resonators (HRs) when mounted on the sidewall of a clear…
Caixing Fu, Xiaonan Zhang, Min Yang et al.Oct 12, 2016
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Acoustic Coherent Perfect Absorbers as Sensitive Null Detectors
We report the experimental realization of acoustic coherent perfect absorption (CPA) of four symmetric scatterers of very different structures. The only conditions necessary for these scatterers to…
Chong Meng, Xiaonan Zhang, Suet To Tang et al.Oct 12, 2016
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Hamiltonian Analysis of an On-shell U(1) Gauge Field Theory
We perform the Hamiltonian analysis of an on-shell U(1) gauge field theory, in which the action is not invariant under local U(1) transformations but recovers the invariance when the equations of…
Chunshan Lin, Misao SasakiOct 11, 2016
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Modeling real phononic crystals via the weighted relaxed micromorphic model with free and gradient micro-inertia
In this paper the relaxed micromorphic continuum model with weighted free and gradient micro-inertia is used to describe the dynamical behavior of a real two-dimensional phononic crystal for a wide…
Angela Madeo, Manuel Collet, Marco Miniaci et al.Oct 11, 2016
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Optimal parameters uncoupling vibration modes of oscillators
A novel optimization concept for an oscillator with two degrees of freedom is proposed. By using specially defined motion ratios, we control the action of springs and dampers to each degree of…
Khanh Chau Le, Alexander PieperOct 11, 2016
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Determining the value of the fine-structure constant from a current balance: getting acquainted with some upcoming changes to the SI
The revised International System of Units (SI), expected to be approved late in 2018, has implications for physics pedagogy; the ampere definition which dates from 1948 will be replaced by a…
Richard S. DavisOct 10, 2016
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Wedge Diffraction as an Instance of Radiative Shielding
The celebrated Sommerfeld wedge diffraction solution is reexamined from a null interior field perspective. Exact surface currents provided by that solution, when considered as disembodied half-plane…
J. A. GrzesikOct 6, 2016
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Seismic waves in a three-dimensional block medium
We study numerically the propagation of seismic waves in a three-dimensional block medium. The medium is modeled by a spatial lattice of masses connected by elastic springs and viscous dampers. We…
Nadezhda AleksandrovaOct 5, 2016
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Double-temperature ratchet model and current reversal of coupled Brownian motors
On the basis of the transport features and experimental phenomena observed in studies of molecular motors, we proposea double-temperature ratchet model of coupled motors to reveal the dynamical…
Chen-pu Li, Hong-bin Chen, Zhi-gang ZhengOct 4, 2016
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Hidden momentum and the Abraham-Minkowski debate
We use an extended version of electrodynamics, which admits the existence of magnetic charges and currents, to discuss how different models for electric and magnetic dipoles do or do not carry hidden…
Pablo L. Saldanha, J. S. Oliveira FilhoOct 3, 2016
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Oscillator Based on Lumped Double Ladder Circuit with Band Edge Degeneracy
An oscillator design based on a periodic, double ladder resonant circuit is proposed. The circuit exhibits a degenerate band edge (DBE) in the dispersion diagram of its phase-frequency eigenstates,…
Dmitry Oshmarin, Farshad Yazdi, Mohamed A. K. Othman et al.Oct 3, 2016
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Broadband quasi perfect absorption using chirped multi-layer porous materials
This work theoretically analyzes the sound absorption properties of a chirped multi-layer porous material including transmission, in particular showing the broadband unidirectional absorption…
Noé Jiménez, Vicent Romero-García, Alejandro Cebrecos et al.Oct 1, 2016
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The destabilizing effect of external damping: Singular flutter boundary for the Pfluger column with vanishing external dissipation
Elastic structures loaded by nonconservative positional forces are prone to instabilities induced by dissipation: it is well-known in fact that internal viscous damping destabilizes the marginally…
Mirko Tommasini, Oleg N. Kirillov, Diego Misseroni et al.Oct 1, 2016
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Is the tautochrone curve unique?
The answer to this question is no. In fact, in addition to the solution first obtained by Christiaan Huygens in 1658, given by the cycloid, we show that there is an infinite number of tautochrone…
Pedro Terra, Reinaldo de Melo e Souza, C. FarinaOct 1, 2016
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Scattering intensity limit value at very small angles
The existence of the limit of a sample scattering intensity, as the scattering vector approaches zero, requires and is ensured by the property that the mean value of the scattering density…
Salvino CiccarielloSep 30, 2016
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Optimal Sound Absorbing Structures
Causal nature of the acoustic response, for any materials or structures, dictates an inequality that relates the absorption spectrum of the sample to its thickness. We present a general recipe for…
Min Yang, Shuyu Chen, Caixing Fu et al.Sep 30, 2016
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Wave-particle duality coming from a bead oscillator in an elastic medium, theoretical study and quantum similarities
We introduce a dual wave-particle macroscopic system, where a bead oscillator oscillates in an elastic medium which obeys the Klein-Gordon equation. This theoretical system is mostly inspired by…
Christian BorghesiSep 29, 2016
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Solution of Cavity Resonance and Waveguide Scattering Problems Using the Eigenmode Projection Technique
An eigenmode projection technique (EPT) is developed and employed to solve problems of electromagnetic resonance in closed cavities and scattering from discontinuities in guided-wave structures. The…
Mamdouh H. Nasr, Mohamed A. K. Othman, Islam A. Eshrah et al.Sep 29, 2016
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Maximum range of a projectile thrown from constant-speed circular motion
The problem of determining the angle at which a point mass launched from ground level with a given speed is a standard exercise in mechanics. Similar, yet conceptually and calculationally more…
Nikola PoljakSep 27, 2016
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Geometry dependence of 2-dimensional space-charge-limited currents
The space-charge-limited current in a zero thickness planar thin film depends on the geometry of the electrodes. We present a theory which is to a large extent analytical and applicable to many…
Patrick De VisschereSep 27, 2016
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