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We investigate the flow of an electrolyte through a rigid nanochannel decorated with a surface charge pattern. Employing lattice Boltzmann and dissipative particle dynamics methods, as well as analytical theory, we show that the…

软凝聚态物质 · 物理学 2024-01-12 Tine Curk , Sergi G. Leyva , Ignacio Pagonabarraga

Aerosol injectors applied in single-particle diffractive imaging experiments demonstrated their potential in efficiently delivering nanoparticles with high density. Continuous optimization of injector design is crucial for achieving…

Macroscale experiments show that a train of two immiscible liquid drops, a bislug, can spontaneously move in a capillary tube because of surface tension asymmetries. We use molecular dynamics simulation of Lennard-Jones fluids to…

流体动力学 · 物理学 2009-12-15 Amir Houshang Bahrami , Mir Abbas Jalali

We investigate Poiseuille channel flow through intrinsically curved media, equipped with localized metric perturbations. To this end, we study the flux of a fluid driven through the curved channel in dependence of the spatial deformation,…

流体动力学 · 物理学 2016-04-27 J. -D. Debus , M. Mendoza , S. Succi , H. J. Herrmann

Recent experiments on active materials, such as dense bacterial suspensions and microtubule-kinesin motor mixtures, show a promising potential for achieving self-sustained flows. However, to develop active microfluidics it is necessary to…

软凝聚态物质 · 物理学 2019-01-23 Santhan Chandragiri , Amin Doostmohammadi , Julia M Yeomans , Sumesh P Thampi

Evolution of a suspension drop entrained by Poiseuille flow is studied numerically at a low Reynolds number. A suspension drop is modelled by a cloud of many non-touching particles, initially randomly distributed inside a spherical volume…

流体动力学 · 物理学 2015-05-18 Krzysztof Sadlej , Eligiusz Wajnryb , Maria L. Ekiel-Jeżewska

Molecular dynamics simulations are used to simulate the thermal properties of a model fluid containing nanoparticles (nanofluid). By modelling transient absorption experiments, we show that they provide a reliable determination of…

材料科学 · 物理学 2015-06-25 Mihail Vladkov , J. -L. Barrat

When colloids flow in a narrow channel, the transport efficiency is controlled by the non-equilibrium interplay between colloid-wall interactions and hydrodynamics. In this paper, a general, unifying description of colloidal dispersion flow…

流体动力学 · 物理学 2018-06-12 Patrice Bacchin

A molecular dynamics (MD) simulation of planar Couette flow is presented for the minimal channel in which turbulence structures can be sustained. Evolution over a single breakdown and regeneration cycle is compared to computational fluid…

流体动力学 · 物理学 2015-12-04 E. R. Smith

The existence of net flux across the nanochannels under the asymmetrical static electric fields obtained at room temperature from molecular dynamics (MD) simulations [Nat. Nanotechnol. 2, 709 (2007); Phys. Rev. Lett. 101, 064502 (2008)] has…

统计力学 · 物理学 2012-07-17 Haiping Fang , Rongzheng Wan

In this paper, we explore osmotic transport by means of molecular dynamics (MD) simulations. We first consider osmosis through a membrane, and investigate the reflection coefficient of an imperfectly semi-permeable membrane, in the dilute…

介观与纳米尺度物理 · 物理学 2017-05-18 Hiroaki Yoshida , Sophie Marbach , Lydéric Bocquet

Lattice Boltzmann simulations are used to explore the behavior of liquid crystals subject to Poiseuille flow. In the nematic regime at low shear rates we find two possible steady state configurations of the director field. The selected…

软凝聚态物质 · 物理学 2007-05-23 Colin Denniston , Enzo Orlandini , J. M. Yeomans

We simulate solid particles moving in the two-dimensional channel with the Poiseuille flow. We found that the collective chain excitation emerges with the increasing number of particles in the chain. We measured the spectrum of the chain…

计算物理 · 物理学 2021-12-14 Maria Guskova , Lev Shchur

The electronic analog of the Poiseuille flow is the transport in a narrow channel with disordered edges that scatter electrons in a diffuse way. In the hydrodynamic regime, the resistivity decreases with temperature, referred to as the…

介观与纳米尺度物理 · 物理学 2020-05-13 G. M. Gusev , A. S. Jaroshevich , A. D. Levin , Z. D. Kvon , A. K. Bakarov

Continuum simulation is employed to study ion transport and fluid flow through a nanopore in a solid-state membrane under an applied potential drop. Results show the existence of concentration polarization layers on the surfaces of the…

流体动力学 · 物理学 2015-06-16 Mao Mao , Sandip Ghosal , Guohui Hu

The migration of a Brownian fluid droplet in a parallel-plate microchannel was investigated using dissipative particle dynamics computer simulations. In a Newtonian solvent, the droplet migrated toward the channel walls due to inertial…

软凝聚态物质 · 物理学 2019-04-16 Michael P. Howard , Thomas M. Truskett , Arash Nikoubashman

The emergence of new nanoporous materials, based e.g. on 2D materials, offers new avenues for water filtration and energy. There is accordingly a need to investigate the molecular mechanisms at the root of the advanced performances of these…

介观与纳米尺度物理 · 物理学 2023-07-10 Geoffrey Monet , Marie-Laure Bocquet , Lydéric Bocquet

The electro-osmotic flow through a channel between two undulated surfaces induced by an external electric field is investigated. The gap of the channel is very small and comparable to the thickness of the electrical double layers. A lattice…

软凝聚态物质 · 物理学 2016-05-24 Hiroaki Yoshida , Tomoyuki Kinjo , Hitoshi Washizu

Condensation is an important aspect of many flow applications due to the universal presence of humidity in the air at ambient conditions. For direct numerical simulations of such flows, simulating the gas phase as a mixture characterized by…

流体动力学 · 物理学 2022-06-29 Philipp Bahavar , Claus Wagner

Using molecular dynamics simulations we study the slow dynamics of a hard sphere fluid confined in a disordered porous matrix. The presence of both discontinuous and continuous glass transitions as well as the complex interplay between…

软凝聚态物质 · 物理学 2009-09-29 Jan Kurzidim , Daniele Coslovich , Gerhard Kahl