Application of the theory of dispersion forces to the surface melting of ice

Elbaum, Michael; Schick, M.

doi:10.1103/physrevlett.66.1713

Cited by 166 publications

(309 citation statements)

References 19 publications

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“…One notices from Fig. 1 in [33] that the crossing point between the permittivities for ice and water occurs at about 1.5 × 10 16 rad/s, about the same point as the crossing point in our Fig. 1.…”

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confidence: 68%

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Retardation turns the van der Waals attraction into a Casimir repulsion as close as 3 nm

et al. 2012

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confidence: 68%

“…It is instructive finally to compare this with the theory for surface melting of ice [33]. Surface melting takes place if the liquid phase wets the solid-vapor interface at the triple point.…”

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confidence: 99%

Retardation turns the van der Waals attraction into a Casimir repulsion as close as 3 nm

et al. 2012

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“…Other studies discussing the transition between attractive and repulsive interactions are found in Refs. [16][17][18][19].…”

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confidence: 99%

“…Other studies discussing the transition between attractive and repulsive interactions are found in Refs. [16][17][18][19].Surfaces of interest in biology and biotechnology may involve alkane molecules creating an oil-water interface. In this Brief Report we will demonstrate that the Casimir-Polder interaction between dissolved atoms and different oil-water * mabos@ifm.liu.se † Drew.Parsons@anu.edu.au ‡ bos@ifm.liu.se interfaces may be either repulsive or attractive, or as we will see for some of the alkanes, it may change from repulsion to attraction as the distance to the interface increases.…”

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confidence: 99%

Sign of the Casimir-Polder interaction between atoms and oil-water interfaces: Subtle dependence on dielectric properties

et al. 2012

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We demonstrate that Casimir-Polder energies between noble gas atoms (dissolved in water) and oil-water interfaces are highly surface specific. Both repulsion (e.g., hexane) and attraction (e.g., glycerine and cyclodecane) is found with different oils. For several intermediate oils (e.g., hexadecane, decane, and cyclohexane) both attraction and repulsion can be found in the same system. Near these oil-water interfaces the interaction is repulsive in the nonretarded limit and turns attractive at larger distances as retardation becomes important. These highly surface specific interactions may have a role to play in biological systems where the surface may be more or less accessible to dissolved atoms. The Casimir-Polder interaction [1] between polarizable particles and a wall has received intense attention in recent decades. The theoretical framework for this interaction was worked out a long time ago [1][2][3][4][5], yet it remains a topic of great interest due to its many applications in biological, chemical, and atomic systems. For reviews, cf., e.g., [6][7][8].An interesting aspect of the Casimir-Lifshitz and CasimirPolder forces is that according to theories these forces can either be attractive or repulsive. Anderson and Sabiski performed experiments on films of liquid helium on calcium fluorite, and similar molecularly smooth surfaces [9]. The film thicknesses ranged from 10 to 200Å [9]. In these measurements the repulsive van der Waals potential opposed the gravitational potential [9]. A good agreement was found [10] between experimental data and Lifshitz theory [3]. In a set of experiments that inspired the present work, Hauxwell and Ottewill [11] measured the thickness of films of oil on water near the alkane saturated vapor pressure, an asymmetric system (oil-water-air) in which the surfaces are molecularly smooth. For this system n-alkanes up to octane spread on water. Higher alkanes do not spread. The phenomenon depends on a balance of van der Waals forces against the vapor pressure [11,12]. The net force, as a function of film thickness, depends on the dielectric properties of the oils [13]. As demonstrated [12] it involves an intricate balance of repulsive and attractive components from different frequency regimes. When the ultraviolet components are exponentially damped by retardation, the opposing (repulsive) infrared and visible components take over [14,15]. Other studies discussing the transition between attractive and repulsive interactions are found in Refs. [16][17][18][19].Surfaces of interest in biology and biotechnology may involve alkane molecules creating an oil-water interface. In this Brief Report we will demonstrate that the Casimir-Polder interaction between dissolved atoms and different oil-water * mabos@ifm.liu.se † Drew.Parsons@anu.edu.au ‡ bos@ifm.liu.se interfaces may be either repulsive or attractive, or as we will see for some of the alkanes, it may change from repulsion to attraction as the distance to the interface increases. The relevant geometry is sketched in Fig. 1. The n...

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“…The critical spacing, where the van der Waals interaction changes sign, observed for the system discussed is very close to the case of water-one-ice [36]. In both cases there is thus an equilibrium distance set only by the van der Waals interactions.…”

Section: Numerical Results and Discussionmentioning

confidence: 54%

Repulsive interactions of a lipid membrane with graphene in composite materials

Phan

Hoang²,

Phan

et al. 2013

The Journal of Chemical Physics

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The van der Waals interaction between a lipid membrane and a substrate covered by a graphene sheet is investigated using the Lifshitz theory. The reflection coefficients are obtained for a layered planar system submerged in water. The dielectric response properties of the involved materials are also specified and discussed. Our calculations show that a graphene covered substrate can repel the biological membrane in water. This is attributed to the significant changes in the response properties of the system due to the monolayer graphene. It is also found that the van der Waals interaction is mostly dominated by the presence of graphene, while the role of the particular substrate is secondary.

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Application of the theory of dispersion forces to the surface melting of ice

Cited by 166 publications

References 19 publications

Retardation turns the van der Waals attraction into a Casimir repulsion as close as 3 nm

Retardation turns the van der Waals attraction into a Casimir repulsion as close as 3 nm

Sign of the Casimir-Polder interaction between atoms and oil-water interfaces: Subtle dependence on dielectric properties

Repulsive interactions of a lipid membrane with graphene in composite materials

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