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Space-time materials are obtained by modulating a physical medium with a traveling-wave perturbation of one or several of its constitutive parameters, such as the density or the bulk modulus in the case of acoustic materials. When this…

材料科学 · 物理学 2026-02-10 J. Galiana , J. Redondo , R. Picó , V. J. Sánchez-Morcillo

Waves propagating through a weakly scattering random medium show a pronounced branching of the flow accompanied by the formation of freak waves, i.e., extremely intense waves. Theory predicts that this strong fluctuation regime is…

无序系统与神经网络 · 物理学 2013-11-05 S. Barkhofen , J. Metzger , R. Fleischmann , U. Kuhl , H. -J. Stoeckmann

At present, many works about magneto-hydrodynamics wave diagnostics in magnetic flux tubes are based on some pioneer works not considering the contributions of magnetic twist. Other works considered the effect on magneto-hydrodynamics…

太阳与恒星天体物理 · 物理学 2021-06-23 Wei Wu , Robert Sych , Jie Chen , Jiang-tao Su

The effects of both density stratification and magnetic field expansion on torsional Alfven waves in magnetic flux tubes are studied. The frequencies, the period ratio P1/P2 of the fundamental and its first-overtone, and eigenfunctions of…

太阳与恒星天体物理 · 物理学 2011-05-10 K. Karami , K. Bahari

We investigate the convective stability of a thin, infinite fluid layer with a rectangular cross-section, subject to imposed heat fluxes at the top and bottom and fixed temperature along the vertical sides. The instability threshold depends…

We discuss and briefly overview recent progress with studying fluctuations in scattering on a resonance state coupled to the background of many chaotic states. Such a problem arises naturally, e.g., when dealing with wave propagation in the…

量子物理 · 物理学 2017-12-21 D. V. Savin

Gravitational waves (GW) propagating through a magnetised plasma excite low-frequency magnetohydrodynamic (MHD) waves. In this paper we investigate whether these waves can produce observable radio emission at higher frequencies by…

天体物理学 · 物理学 2009-11-11 Joachim Moortgat , Jan Kuijpers

A large variability of carrier mobility of graphene-based field effect transistors hampers graphene science and technology. We determine the scattering strength of the dominant scatterer responsible for the variability of graphene-based…

介观与纳米尺度物理 · 物理学 2015-07-27 Jyoti Katoch , Duy Le , Simranjeet Singh , Rahul Rao , Talat S. Rahman , Masa Ishigami

Transport properties of a single-mode waveguide with rough boundary are studied by discrimination between two mechanisms of surface scattering, the amplitude and square-gradient ones. Although these mechanisms are generically mixed, we show…

统计力学 · 物理学 2015-05-30 Manuel Rendón , Felix M. Izrailev , Nykolay M. Makarov

The aim of this work is to identify the physical processes that occur in the network and contribute to its dynamics and heating. We model the network as consisting of individual flux tubes with a non-potential field structure that are…

天体物理学 · 物理学 2009-11-10 S. S. Hasan , A. A. van Ballegoiijen , W. Kalkofen , O. Steiner

Studies into scatterings of photonic structures have been so far overwhelmingly focused on their dependencies on the spatial and spectral morphologies of the incident waves. In contrast, the evolution of scattering properties through…

光学 · 物理学 2023-05-19 Chunchao Wen , Jianfa Zhang , Shiqiao Qin , Zhihong Zhu , Wei Liu

The study of capillary wave scattering by a circular region with different interfacial properties from the rest of an otherwise homogeneous interface is motivated by experiments on wave attenuation at a monolayer covered air-water interface…

凝聚态物理 · 物理学 2016-08-31 T. Chou , S. K. Lucas , H. A. Stone

We investigate symmetry-selective surface-mode excitation in a general periodically time-modulated double-layer system, where the modulation of the two layers has a constant phase difference. By deriving a semi-analytic trans-fer matrix…

光学 · 物理学 2022-05-25 Ya-Wen Tsai , Yao-Ting Wang , Emanuele Galiffi , Andrea Alù , Ta-Jen Yen

We report, for the first time, a full experimental and computational investigation of all possible light matter interactions on the surface of an infrared metamaterial absorber (MMA). Two channels of energy dissipation - diffuse scattering…

We perform experiments to study the inverse cascade regime of gravity wave turbulence on the surface of a fluid. Surface waves are forced at an intermediate scale corresponding to the gravity-capillary wavelength. In response to this…

流体动力学 · 物理学 2011-10-27 Luc Deike , Claude Laroche , Eric Falcon

We study the motion of strongly inelastic particles in a narrow vibrating tube using molecular dynamics simulation. At low frequency of the vibration, we observe qualitative changes of the motion, as the depth of the pile increases. The…

统计力学 · 物理学 2009-10-31 Jysoo Lee

Recent experiments by Baxter et al. showed the existence of density waves in granular material flowing out of a hopper. We show, using Molecular Dynamics Simulations, that this effect is a consequence of static friction and find that these…

凝聚态物理 · 物理学 2007-05-23 G. Ristow , H. J. Herrmann

Motion of test particles in the gravitational field associated with an electromagnetic plane wave is investigated. The interaction with the radiation field is modeled by a force term {\it \`a la} Poynting-Robertson entering the equations of…

广义相对论与量子宇宙学 · 物理学 2015-06-22 Donato Bini , Andrea Geralico

We investigate the low-frequency dynamics for transmission or reflection of a wave by a cavity with chaotic scattering. We compute the probability distribution of the phase derivative phi'=d phi/d omega of the scattered wave amplitude,…

无序系统与神经网络 · 物理学 2007-05-23 K. J. H. van Bemmel , H. Schomerus , C. W. J. Beenakker

We study magnon modes in the presence of a vortex in a circular easy-plane ferromagnet. The problem of vortex-magnon scattering is investigated for partial modes with different values of the azimuthal quantum number m over a wide range of…

强关联电子 · 物理学 2007-05-23 Denis D. Sheka , Ivan A. Yastremsky , Boris A. Ivanov , Gary M. Wysin , Franz G. Mertens