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We examine the stability of a soft dielectric plate deformed by the coupled effects of a mechanical pre-stress applied on its lateral faces and an electric field applied through its thickness under charge control. The electric field is…

软凝聚态物质 · 物理学 2020-03-17 Hannah Conroy Broderick , Michele Righi , Michel Destrade , Ray W. Ogden

A direct numerical simulation of the three-dimensional elektrokinetic instability near a charge selective surface (electric membrane, electrode, or system of micro-/nanochannels) is carried out and analyzed. A special finite-difference…

流体动力学 · 物理学 2014-08-06 E. A. Demekhin , N. V. Nikitin , V. S. Shelistov

A six-dimensional reversible normal form system occurs in B{\'e}nard-Rayleigh convection between parallel planes, when we look for domain walls intersecting orthogonally (see Buffoni et al [1]). On the truncated system, we prove…

数学物理 · 物理学 2025-12-02 Gérard Iooss

In this paper, we show that four main diagonal spaces of injective tensor products are pairwise isometrically isomorphic. When E is a Banach lattice, we show that the tensor diagonal of E is a 1-unconditional basic sequence in both the…

泛函分析 · 数学 2015-02-18 Donghai Ji , Byunghoon Lee , Qingying Bu

The Euler-Maxwell system as a hydrodynamic model for plasma physics to describe the dynamics of the compressible electrons in a constant charged non-moving ion background is studied. The global smooth flow with small amplitude is…

偏微分方程分析 · 数学 2011-07-12 Renjun Duan

A parabolic free boundary problem modeling a three-dimensional electrostatic MEMS device is investigated. The device is made of a rigid ground plate and an elastic top plate which is hinged at its boundary, the plates being held at…

偏微分方程分析 · 数学 2021-03-12 Katerina Nik

We consider classical electromagnetic systems in which the current density ${\bf J}$ does not change with time, but has nonzero divergence, so that electric charge does build up steadily over time. We show that for such a system, the…

经典物理 · 物理学 2018-01-01 Edward Parker

We find first nonlinear correction to the field, produced by a static charge at rest in a background constant magnetic field. It is quadratic in the charge and purely magnetic. The third-rank polarization tensor - the nonlinear response…

高能物理 - 理论 · 物理学 2013-07-08 Dmitry M. Gitman , Anatoly E. Shabad

The problems of Classical Electrodynamics with the electron equation of motion and with non-integrable singularity of its self-field stress tensor are well known. They are consequences, we show, of neglecting terms that are null off the…

高能物理 - 理论 · 物理学 2016-09-06 Manoelito M. de Souza

We investigate transport phenomena and dynamical effects in flat bands where the band dispersion plays no role. We show that wavepackets in geometrically non-trivial flat bands can display dynamics when inhomogeneous electric fields are…

介观与纳米尺度物理 · 物理学 2025-06-06 Jing-Xin Liu , Giandomenico Palumbo , Marco Di Liberto

We consider the Nernst-Planck-Stokes system on a bounded domain of $\mathbb{R}^d$, $d=2,3$ with general nonequilibrium Dirichlet boundary conditions for the ionic concentrations. It is well known that, in a wide range of cases, equilibrium…

偏微分方程分析 · 数学 2025-01-09 Fizay-Noah Lee

We consider gradient flows of surface energies which depend on the surface by a parameterization and on a tangential tensor field. The flow allows for dissipation by evolving the parameterization and the tensor field simultaneously. This…

数学物理 · 物理学 2024-03-25 Ingo Nitschke , Souhayl Sadik , Axel Voigt

A flat elastic sheet may contain pointlike conical singularities that carry a metrical "charge" of Gaussian curvature. Adding such elementary defects to a sheet allows one to make many shapes, in a manner broadly analogous to the familiar…

软凝聚态物质 · 物理学 2013-10-02 Jemal Guven , J. A. Hanna , Osman Kahraman , Martin Michael Mueller

In this work we use first-principles density-functional theory (DFT) calculations combined with the maximally localized Wannier function tight binding Hamiltonian (MLWF-TB) and Bethe-Salpeter equation (BSE) formalism to investigate…

Patterned surfaces with large effective slip lengths, such as super-hydrophobic surfaces containing trapped gas bubbles, have the potential to greatly enhance electrokinetic phenomena. Existing theories assume either homogeneous flat…

流体动力学 · 物理学 2015-05-13 Supreet S. Bahga , Olga I. Vinogradova , Martin Z. Bazant

A system consisting of a doubly clamped beam with an attached body (slider) free to move along the beam has been studied recently by multiple research groups. Under harmonic base excitation, the system has the capacity to passively adapt…

适应与自组织系统 · 物理学 2022-08-02 Florian Müller , Maximilian Beck , Malte Krack

A numerical and systematic parameter study of three-dimensional vesicle electrohydrodynamics is presented to investigate the effects of different fluid and membrane properties. The dynamics of vesicles in the presence of DC electric fields…

软凝聚态物质 · 物理学 2016-05-24 Ebrahim M. Kolahdouz , David Salac

We consider here time-dependent three-dimensional stratified geophysical water flows of finite depth over a variable bottom with a free surface and an interface (separating two layers of constant and different densities). Under the…

偏微分方程分析 · 数学 2023-10-12 Calin Martin

We show that the field equations of the Schwarzschild geometry are invariant under passive Lorentz transformations to a freely falling system. We decompose the field equations with respect to the accelerated system and find that the force…

广义相对论与量子宇宙学 · 物理学 2007-05-23 Rainer Burghardt

A fundamental result of classical electromagnetism is that Maxwell's equations imply that electric charge is locally conserved. Here we show the converse: Local charge conservation implies the local existence of fields satisfying Maxwell's…

经典物理 · 物理学 2019-07-08 Lucas Burns