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Atomic force microscopy is an important tool for characterizing surface acoustic waves, in particular for high frequencies, where the wavelength is too short to be resolved by laser interferometry. A caveat is, that the cantilever…

介观与纳米尺度物理 · 物理学 2022-09-29 Jan Hellemann , Filipp Müller , Madeleine Msall , Paulo V. Santos , Stefan Ludwig

In a recent work, we provided a standardized and exact analytical formalism for computing in the semiclassical regime the radiation force experienced by a two-level atom interacting with any number of plane waves with arbitrary intensities,…

量子物理 · 物理学 2021-06-02 L. Podlecki , J. Martin , T. Bastin

In splat painting, a collection of liquid droplets is projected onto the substrate by imposing a controlled acceleration to a paint-loaded brush. To unravel the physical phenomena at play in this artistic technique, we perform a series of…

This paper clarifies the nature of sound spectra within subsonic jets. Three problems, of increasing complexity, are presented. Firstly, a point source is placed in a two-dimensional plug flow and the sound field is obtained analytically.…

流体动力学 · 物理学 2014-01-17 S. Sinayoko , A. Agarwal , R. D. Sandberg

The effect of a standing acoustic wave on the diffusion of an ad-atom on a crystalline surface is theoretically studied. We used an unidimensional space model to study the ad-atom+substrate system. The dynamic equation of the ad-atom, a…

其他凝聚态物理 · 物理学 2015-06-04 Nicolas Combe , C. Taillan , J. Morillo

For a fluid of convex hard particles, characterized by a length scale $\sigma_\text{min}$ and an anisotropy parameter $\epsilon$, we develop a formalism allowing one to relate thermodynamic quantities to the body's shape. In a first step…

统计力学 · 物理学 2025-06-17 Thomas Franosch , Cristiano De Michele , Rolf Schilling

The secular equation for surface acoustic waves propagating on a monoclinic elastic half-space is derived in a direct manner, using the method of first integrals. Although the motion is at first assumed to correspond to generalized plane…

软凝聚态物质 · 物理学 2013-05-31 Michel Destrade

Attosecond transient-absorption spectroscopy (ATAS) is an established method for exploring electron dynamics on the subfemtosecond time-scale. ATAS spectra contain certain ubiquitous features, such as oscillating fringes, light-induced…

原子物理 · 物理学 2017-08-02 Jørgen Johansen Rørstad , Jens E. Bækhøj , Lars Bojer Madsen

We consider a (2+1)-dimensional mechanical system with the Lagrangian linear in the torsion of a light-like curve. We give Hamiltonian formulation of this system and show that its mass and spin spectra are defined by one-dimensional…

高能物理 - 理论 · 物理学 2009-10-31 A. Nersessian , R. Manvelyan , H. J. W. Mueller-Kirsten

We put forward a theory on the optical force exerted upon a dipolar particle by a stationary and ergodic partially coherent light field. We show through a rigorous analysis that the ensemble averaged electromagnetic force is given in terms…

光学 · 物理学 2016-11-26 Juan Miguel Auñón , Manuel Nieto-Vesperinas

Two decades after its introduction, laser-assisted Atom Probe Tomography (La-APT) has demonstrated a unique potential for the study of the 3D distribution of atomic species in semiconductor materials and devices, and in a growing list of…

材料科学 · 物理学 2026-02-17 Enrico Di Russo , François Vurpillot , Lorenzo Rigutti

The measurement of the spin angular momentum of circularly polarized light by Beth [Phys. Rev. 50, 115 (1936)] can be explained by using a microscopic torque density. However, the experiment does not resolve the space- and time-dependent…

光学 · 物理学 2024-03-18 Mikko Partanen , Jukka Tulkki

Acoustic fields effect steady transport of suspended particles by rectifying the inertia of primary oscillations. We develop a fully analytic theory that relates this steady particle motion to incident oscillatory (acoustic) flow and the…

流体动力学 · 物理学 2023-10-03 Xiaokang Zhang , Jake Minten , Bhargav Rallabandi

Thermoacoustic tomography (TAT) is an imaging modality based on the thermoacoustic effect. In TAT, a short microwave or radio wave pulse is directed to the imaged target. The energy of the electromagnetic pulse is absorbed depending on the…

计算物理 · 物理学 2025-11-11 Teemu Sahlström , Tanja Tarvainen

We present the results of direct numerical simulation of three-dimensional acoustic turbulence in medium with weak positive dispersion. It is shown that at the beginning of the long-wavelength region in the turbulence energy distribution in…

流体动力学 · 物理学 2022-12-22 E. A. Kochurin , E. A. Kuznetsov

We present a detailed derivation of the electromagnetic force density and pressure in linear dielectric media according to the so-called Microscopic Amp\`ere formulation, which considers the classical dipolar sources in matter along with…

光学 · 物理学 2023-11-27 Bruno Anghinoni , Mikko Partanen , Nelson G. C. Astrath

Opto-mechano-fluidic resonators (OMFRs) are a new platform for high-throughput sensing of the mechanical properties of freely flowing microparticles in arbitrary media. Experimental extraction of OMFR mode shapes, especially the acoustic…

光学 · 物理学 2018-03-14 Jeewon Suh , Kewen Han , Gaurav Bahl

We construct a relativistic and curved space version of action- angle variables for a particle trapped in a gravity and electromagnetic background with time-like isometry. As an example, we consider a particle in AdS background.…

广义相对论与量子宇宙学 · 物理学 2015-11-25 Jaehun Lee , Corneliu Sochichiu

Charged particle motion in axisymmetric toroidal magnetic fields is analyzed within the context of the canonical Hamiltonian Guiding Center theory. A canonical transformation to variables measuring the drift orbit deviation from a magnetic…

等离子体物理 · 物理学 2021-02-08 Yannis Antonenas , Giorgos Anastassiou , Yannis Kominis

The analysis using the partial-wave series expansion (PWSE) method in spherical coordinates is extended to evaluate the acoustic radiation force experienced by rigid oblate and prolate spheroids centered on the axis of wave propagation of…

经典物理 · 物理学 2020-07-21 F. G. Mitri