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Colloids immersed in a critical binary liquid mixture are subject to critical Casimir forces (CCFs) because they confine its concentration fluctuations and influence the latter via effective surface fields. To date, CCFs have only been…

软凝聚态物质 · 物理学 2013-09-04 Akira Furukawa , Andrea Gambassi , Siegfried Dietrich , Hajime Tanaka

We report a numerical study of equilibrium phase-diagrams and interfacial properties of bulk and confined colloid-polymer mixtures using grand canonical Monte Carlo simulations. Colloidal particles are treated as hard spheres, while the…

软凝聚态物质 · 物理学 2009-11-13 Andrea Fortini , Peter G. Bolhuis , Marjolein Dijkstra

In this study we try to answer the qustion : What happens when explicit constraints are introduced such that the low energy, long wavelength modes of a system are unavailable ? This question has assumed some importance in recent years due…

软凝聚态物质 · 物理学 2009-11-11 Abhishek Chaudhuri

We experimentally investigate the dynamics of capillary-driven flows at the nanoscale, using an original platform that combines nanoscale pores and microfluidic features. Our results show a coherent picture across multiple experiments…

软凝聚态物质 · 物理学 2015-10-05 Olivier Vincent , Alexandre Szenicer , Abraham D. Stroock

At nanometer separation, the dominant interaction between an atom and a material surface is the fluctuation-induced Casimir-Polder potential. We demonstrate that slow atoms crossing a silicon nitride transmission nanograting are a…

原子物理 · 物理学 2021-10-26 C Garcion , N Fabre , H Bricha , F Perales , S Scheel , M Ducloy , G Dutier

This paper concerns the dynamics of two layers of compressible, barotropic, viscous fluid lying atop one another. The lower fluid is bounded below by a rigid bottom, and the upper fluid is bounded above by a trivial fluid of constant…

偏微分方程分析 · 数学 2016-02-17 Juhi Jang , Ian Tice , Yanjin Wang

A theoretical study is presented of surface waves at a monomolecular surfactant film between an isotropic liquid and a nematic liquid crystal for the case when the surfactant film is in the isotropic two-dimensional fluid phase and induces…

软凝聚态物质 · 物理学 2008-04-15 S. V. Lishchuk

Molecular dynamics simulations are used to study the capillary adhesion from a nonvolatile liquid meniscus between a spherical tip and a flat substrate. The atomic structure of the tip, the tip radius, the contact angles of the liquid on…

软凝聚态物质 · 物理学 2014-06-10 Shengfeng Cheng , Mark O. Robbins

The static Casimir effect describes an attractive force between two conducting plates, due to quantum fluctuations of the electromagnetic (EM) field in the intervening space. {\it Thermal fluctuations} of correlated fluids (such as critical…

凝聚态物理 · 物理学 2008-11-26 Mehran Kardar , Ramin Golestanian

Molecular dynamics simulation have shown that after initial surface melting, nanowires can melt via two mechanisms: an interface front moves towards the wire centre; the growth of an instability at the interface can cause the solid to…

材料科学 · 物理学 2022-07-11 Kannan M. Ridings , Shaun C. Hendy

We derive expressions for the leading-order far-field flows generated by externally driven and active (swimming) colloids at planar fluid-fluid interfaces. We consider colloids adjacent to the interface or adhered to the interface with a…

软凝聚态物质 · 物理学 2021-07-01 Nicholas G. Chisholm , Kathleen J. Stebe

One of the most intriguing manifestations of quantum zero-point fluctuations are the van der Waals and Casimir forces, often associated with vacuum fluctuations of the electromagnetic field. Here we study generalized fluctuation potentials…

量子物理 · 物理学 2018-05-01 Ephraim Shahmoon , Ulf Leonhardt

Colloids immersed in a critical or near-critical binary liquid mixture and close to a chemically patterned substrate are subject to normal and lateral critical Casimir forces of dominating strength. For a single colloid we calculate these…

软凝聚态物质 · 物理学 2010-08-18 M. Tröndle , S. Kondrat , A. Gambassi , L. Harnau , S. Dietrich

We consider the capillary-gravity water wave equation in two dimensions. We assume that the fluid is inviscid, incompressible, irrotational and the air density is zero. We construct an energy functional and prove a local wellposedness…

偏微分方程分析 · 数学 2020-12-25 Siddhant Agrawal

We investigate effective interactions between a colloidal particle, immersed in a binary mixture of smaller spheres, and a semipermeable membrane. The colloid is modeled as a big hard sphere and the membrane is represented as an infinitely…

软凝聚态物质 · 物理学 2007-05-23 Pawel Bryk

We discuss the effective interactions between two localized perturbations in one-dimensional (1D) quantum liquids. For non-interacting fermions, the interactions exhibit Friedel oscillations, giving rise to a RKKY-type interaction familiar…

其他凝聚态物理 · 物理学 2016-08-16 Alessio Recati , Jean-Noël Fuchs , Claudia Sofia Peca , Wilhelm Zwerger

An example of capillary phenomena commonly seen and often studied is a droplet of water hanging in air from a horizontal surface. A thin capillary surface interface between the liquid and gas develops tangential surface tension, which…

流体动力学 · 物理学 2019-04-09 Dale G. Karr

Critical Casimir interactions represent a perfect example of bath-induced forces at mesoscales. These forces may have a relevant role in the living systems as well as a role in the design of nanomachines fueled by environmental…

介观与纳米尺度物理 · 物理学 2023-12-20 Ignacio A. Martinez , Artyom Petrosyan , Sergio Ciliberto

Particles trapped at a fluid-fluid interface by capillary forces can form a monolayer that jams and buckles when subject to uni-axial compression. Here we investigate experimentally the buckling mechanics of monolayers of millimeter-sized…

软凝聚态物质 · 物理学 2023-07-04 Suriya Prakash , Hugo Perrin , Lorenzo Botto

We present a theoretical study of nonlinear pattern formation in parametric surface waves for fluids of low viscosity, and in the limit of large aspect ratio. The analysis is based on a quasi-potential approximation to the equations…

patt-sol · 物理学 2025-02-25 Wenbin Zhang , Jorge Vinals