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Computer simulations are used to investigate the response of a charged colloid and its surrounding microion cloud to an external electric field. Both static fields (DC) and alternating fields (AC) are considered. A mesoscopic simulation…

软凝聚态物质 · 物理学 2013-07-19 Jiajia Zhou , Roman Schmitz , Burkard Duenweg , Friederike Schmid

We explore the force generation and surface interactions arising when electric fields are applied across fluid films. Using a surface force balance (SFB) we measure directly the force between two electrodes in crossed-cylinder geometry…

软凝聚态物质 · 物理学 2019-04-09 Carla Perez-Martinez , Susan Perkin

We present numerical studies of the transport dynamics of a charged soliton in conjugated polymers under the influence of an external time-dependent electric field. All relevant electron-phonon and electron-electron interactions are nearly…

强关联电子 · 物理学 2009-09-29 Haibo Ma , Ulrich Schollwoeck

To gain some insight into electrochemical activity of dielectric colloids of technical and biomedical interest we investigate a model of dielectric nanosolution whose micro-constitution is dominated by dipolarions -- positively and…

软凝聚态物质 · 物理学 2014-03-27 Sergey Bastrukov , Pik-Yin Lai , Irina Molodtsova

This paper investigates the problem of electrophoretic motion of a polyelectrolyte capsule with a porous arbitrary charged conducting shell in an electrolyte under the action of an external electric field. The corresponding boundary value…

流体动力学 · 物理学 2021-08-11 Anatoly N. Filippov , Daria Yu. Khanukaeva , Petr A. Aleksandrov

We compare two theoretical approaches to dielectric diblock copolymer melts in an external electric field. The first is a relatively simple analytic expansion in the relative copolymer concentration, and includes the full electrostatic…

软凝聚态物质 · 物理学 2012-01-31 Yoav Tsori , David Andelman , Chin-Yet Lin , M. Schick

This study examined the effects of surfactants on the motion and positioning of microparticles in an inhomogeneous electric field. The microparticles were suspended in oil with a surfactant and the electric field was generated using…

软凝聚态物质 · 物理学 2020-01-07 Marcos Masukawa , Masayuki Hayakawa , Masahiro Takinoue

Thermally induced particle flow in a charged colloidal suspension is studied in a fluid-mechanical approach. The force density acting on the charged boundary layer is derived in detail. From Stokes' equation with no-slip boundary conditions…

软凝聚态物质 · 物理学 2014-01-31 S. Fayolle , T. Bickel , A. Würger

This paper builds on two previous works, Lindgren et al. J. Comp. Phys. 371, 712-731 (2018) and Quan et al. arXiv:1807.05384 (2018), to devise a new method to solve the problem of calculating electrostatic interactions in a system composed…

软凝聚态物质 · 物理学 2019-02-20 Eric B. Lindgren , Chaoyu Quan , Benjamin Stamm

We present a numerical study of polyelectrolytes electrophoresing in free solution while squeezed by an axisymmetric confinement force transverse to their net displacement. Hybrid multi-particle collision dynamics and molecular dynamics…

软凝聚态物质 · 物理学 2016-06-22 Tyler N. Shendruk , Martin Bertrand , Gary W. Slater

The localization of electrons caused by atomic disorder is a well-known phenomenon. However, what circumstances allow electrons to remain delocalized and retain band-like characteristics even when the crystal structure is completely absent,…

In this article, we derive a magnetic dipole model for two identical, electrically conducting, and permeable spheres that are exposed to an oscillating homogeneous magnetic field. Our model predicts both amplitude and phase of the induced…

经典物理 · 物理学 2022-12-07 Florian Bönsel , Alfred Müller , Rafael Psiuk

Electrochemical phenomena in biology often unfold in confined geometries where micrometer- to millimeter-scale domains coexist with nanometer-scale interfacial diffuse charge layers. We analyze a model lipid membrane-electrolyte system…

软凝聚态物质 · 物理学 2025-08-20 Joshua B. Fernandes , Hyeongjoo Row , Kranthi K. Mandadapu , Karthik Shekhar

A mobile Coulomb gas permeating a fixed background crystalline lattice of charged colloidal crystals is subject to an electrostatic-elastic coupling, which we study on the continuum level by introducing a minimal coupling between…

软凝聚态物质 · 物理学 2025-02-14 Hao Wu , Zhong-Can Ou-Yang , Rudolf Podgornik

Particle-particle interactions in sedimenting systems have been investigated in the present study considering the many-body hydrodynamic and electrodynamic interactions. These interactions primarily occur in two modes: near-field and…

流体动力学 · 物理学 2016-05-04 Sagardip Majumder , Jayabrata Dhar , Suman Chakraborty

Colloidal particles in liquid crystals tend to induce topological defects and distortions of the molecular alignment within the surrounding anisotropic host medium, which results in elasticity-mediated interactions not accessible to their…

软凝聚态物质 · 物理学 2021-12-30 Bohdan Senyuk , Richmond E. Adufu , Ivan I. Smalyukh

The mobility of surface electrons localized over helium films underlying solid substrates has been evaluated by solving the Boltzmann equation in the time relaxation approximation and the force balance equation in which an effective…

介观与纳米尺度物理 · 物理学 2007-05-23 Debora Coimbra , Sviatoslav S. Sokolov , J. -P. Rino , Nelson Studart

We use computer simulations to study the (driven) dynamics of a charged polymer in a disordered medium, thus mimicking the setting used in gel electrophoresis. In agreement with experiments, we find that inside the gel the mobility of the…

统计力学 · 物理学 2007-05-23 Walter Kob , Leticia F. Cugliandolo

The transport of soft viscoelastic gels through confined geometries underlies critical processes in biomedical, biological, and industrial systems. Here, we examine the translocation of a spherical microgel through a narrow capillary whose…

软凝聚态物质 · 物理学 2026-02-24 Subhadip Biswas , Buddhapriya Chakrabarti

Cells and other soft particles are often forced to flow in confined geometries in both laboratory and natural environments, where the elastic deformation induces an additional drag and pressure drop across the particle. In contrast with…

流体动力学 · 物理学 2025-07-09 Charles Paul Moore , Hiba Belkadi , Brouna Safi , Gabriel Amselem , Charles N. Baroud