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Acoustic-directed assembly is a modular and flexible bottom-up technique with the potential to pattern a wide range of materials. Standing acoustic waves have been previously employed for patterning preformed metal particles, however,…

Resonant scattering of energetic protons off magnetic irregularities is the main process in cosmic ray diffusion. The typical theoretical description uses Alfven waves in the low frequency limit. We demonstrate that the usage of…

太阳与恒星天体物理 · 物理学 2014-05-09 Cedric Schreiner , Felix Spanier

We present a theoretical framework allowing to properly address the nature of surface-like eigenmodes in a hypersonic surface phononic crystal, a composite structure made of periodic metal stripes of nanometer size and periodicity of 1…

介观与纳米尺度物理 · 物理学 2015-03-13 D. Nardi , F. Banfi , C. Giannetti , B. Revaz , G. Ferrini , F. Parmigiani

Magnetic emergent crystals are periodic alignment of "particle-like" spin textures that emerge in magnets. Instead of focusing on an individual spin or a macroscopic magnetization field, we analyze the dynamical behaviors of these novel…

介观与纳米尺度物理 · 物理学 2019-05-13 Yangfan Hu

Electrostatic waves play a critical role in nearly every branch of plasma physics from fusion to advanced accelerators, to astro, solar, and ionospheric physics. The properties of planar electrostatic waves are fully determined by the…

等离子体物理 · 物理学 2023-09-18 J. P. Palastro , K. G. Miller , R. K. Follett , D. Ramsey , K. Weichman , A. V. Arefiev , D. H. Froula

We study the drift of suspended micro-particles in a viscous liquid pumped back and forth through a periodic lattice of pores (drift ratchet). In order to explain the particle drift observed in such an experiment, we present an…

流体动力学 · 物理学 2012-05-22 Philippe Beltrame , Peter Talkner , Peter Hänggi

Composite particles---atoms, molecules, or microspheres---are unique tools for testing joint quantum and general relativistic effects, macroscopic limits of quantum mechanics, and searching for new physics. However, all studies of the free…

量子物理 · 物理学 2021-01-20 Carolyn E. Wood , Magdalena Zych

We study travelling waves on a two--dimensional lattice with linear and nonlinear coupling between nearest particles and a periodic nonlinear substrate potential. Such a discrete system can model molecules adsorbed on a substrate crystal…

斑图形成与孤子 · 物理学 2007-05-23 Michal Feckan , Vassilis M. Rothos

Scattering of electromagnetic waves by many small particles of arbitrary shapes is reduced rigorously to solving linear algebraic system of equations bypassing the usual usage of integral equations. The matrix elements of this linear…

数学物理 · 物理学 2009-11-11 A. G. Ramm

We provide a detailed analysis on the acoustic radiation force and torque exerted on a homogeneous viscoelastic particle in the long-wave limit (the particle radius is much smaller than the incident wavelength) by an arbitrary wave. We…

经典物理 · 物理学 2016-04-19 J. P. Leao-Neto , Glauber T. Silva

Particles such as microplastics and phytoplankton suspended in the water column in the natural environment are often subject to the action of surface gravity waves. By modelling such anisotropic particles as small spheroids that slowly…

流体动力学 · 物理学 2023-08-03 Nimish Pujara , Jean-Luc Thiffeault

The essence of levitation technology is the countervailing of gravity. It is known that an ultrasound standing wave is capable of suspending small particles at its sound pressure nodes. The acoustic axis of the ultrasound beam in…

经典物理 · 物理学 2015-06-18 Yoichi Ochiai , Takayuki Hoshi , Jun Rekimoto

Following a recent demonstration of stable trapping of floating particles by stationary (monochromatic) structured water waves [Nature 638, 394 (2025)], we report dynamic water-wave tweezers that enable controllable transport of trapped…

Building on a previous study that analyses surface waves in magnetic slabs embedded in a non-magnetic external environment, in this study the model is generalised and external magnetic fields are added. The slab is assumed to be thin, with…

太阳与恒星天体物理 · 物理学 2020-07-29 William Oxley , Noémi Kinga Zsámberger , Róbert Erdélyi

Acoustic vibrations of nanoparticles made of materials with anisotropic elasticity and nanoparticles with non-spherical shapes are theoretically investigated using a homogeneous continuum model. Cubic, hexagonal and tetragonal symmetries of…

介观与纳米尺度物理 · 物理学 2009-06-02 Lucien Saviot , Daniel B. Murray

Space-time light structuring has emerged as a very powerful tool for controlling the propagation dynamics of pulsed beam. The ability to manipulate and generate space-time distributions of light has been remarkably enhanced in past few…

光学 · 物理学 2022-10-26 Pierre Béjot , Bertrand Kibler

Manipulating the way in which colloidal particles self-organise is a central challenge in the design of functional soft materials. Meeting this challenge requires the use of building blocks that interact with one another in a highly…

软凝聚态物质 · 物理学 2021-03-30 Joe G Donaldson , Peter Schall , Laura Rossi

Radiation from acoustic sources located inside randomly-layered structures is studied using the transfer matrix method. It is shown that in contrast to the periodically layered cases where the radiation can be either enhanced or inhibited…

凝聚态物理 · 物理学 2007-05-23 Zhen Ye , Pi-Gang Luan

We propose a new acceleration mechanism for charged particles by using cylindrical or spherical non-linear acoustic waves propagating in ion-electron plasma. The acoustic wave, which is described by the cylindrical or spherical Kortweg-de…

高能天体物理现象 · 物理学 2018-12-19 Hideki Ishihara , Ken Matsuno , Masaaki Takahashi , Syuto Teramae

Analytical expressions are derived for the time-averaged, quasi-steady, acoustic radiation force on a heated, spherical, elastic, solid microparticle suspended in a fluid and located in an axisymmetric incident acoustic wave. The heating is…

流体动力学 · 物理学 2025-10-30 Henrik Bruus , Bjørn G. Winckelmann