Casimir force between atomically thin gold films

Boström, Mathias; Persson, Clas; Sernelius, Bo E.

doi:10.1140/epjb/e2012-31051-9

Cited by 18 publications

(45 citation statements)

References 48 publications

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“…16 This film is assumed to be at temperature T in thermal equilibrium with an environment. The anisotropic properties of film material are described by the diagonal tensor with the com-…”

Section: Free-standing Gold Filmmentioning

confidence: 99%

“…[16] within the density functional theory. They take into account both the effects of anisotropy and interband transitions of core electrons.…”

Section: Free-standing Gold Filmmentioning

confidence: 99%

“…(8) in the fully relativistic case using the anisotropic dielectric permittivity of Ref. [16]. The computational results are shown in Table I.…”

Section: Gold Film On a Substratementioning

confidence: 99%

“…1(a,b) in Ref. [16], we plot the ratio of the dielectric permittivities ε zz (iξ)/ε xx (iξ) as a function of the dimensionless quantity ξ/ξ 1 . The lines from bottom to top are for Au films consisting of n = 1, 3, 6 and 15 atomic layers, respectively.…”

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confidence: 99%

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Casimir and van der Waals energy of anisotropic atomically thin metallic films

Mostepanenko

2015

Phys. Rev. B

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We discuss the van der Waals (Casimir) free energies and pressures of thin metallic films, consisting from one to fifteen atomic layers, with regard to the anisotropy in their dielectric properties.Both free-standing films and films deposited on a dielectric substrate are considered. The computations are performed for a Au film and a sapphire substrate. According to our results, for free-standing Au films consisting of one and three atomic layers the respective relative error arising from the use of an isotropic (bulk) dielectric permittivity is equal to 73% and 37% for the van der Waals energy, and 70% and 35% for the pressure. We tabulate the energy and pressure van der Waals coefficients of thin Au films computed with account of their anisotropy. It is shown that the bulk permittivity of Au can be used for the films consisting of more than 30 atomic layers, i.e., more than approximately 7 nm thickness. The role of relativistic effects is also investigated and shown to be important even for the films consisting of two or three layers. The obtained results can find applications in the investigation of stability of thin films and development of novel nanoscale devices.

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“…16 This film is assumed to be at temperature T in thermal equilibrium with an environment. The anisotropic properties of film material are described by the diagonal tensor with the com-…”

Section: Free-standing Gold Filmmentioning

confidence: 99%

“…[16] within the density functional theory. They take into account both the effects of anisotropy and interband transitions of core electrons.…”

Section: Free-standing Gold Filmmentioning

confidence: 99%

“…(8) in the fully relativistic case using the anisotropic dielectric permittivity of Ref. [16]. The computational results are shown in Table I.…”

Section: Gold Film On a Substratementioning

confidence: 99%

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confidence: 99%

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Casimir and van der Waals energy of anisotropic atomically thin metallic films

Mostepanenko

2015

Phys. Rev. B

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“…[35] For calculations of Au and SiO 2 based systems, the details are given in our previous work. [14,36] We test how sensitive the results are to the details of the dielectric functions by also using an alternative dielectric function for gold given by Parsegian and Weiss. [37] Unlike the temperature dependence of the Casimir force between metal surfaces [38][39][40][41][42][43][44] the exact values for the low frequency dielectric function of gold are not very important in the present systems.…”

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confidence: 99%

The influence of Lifshitz forces and gas on premelting of ice within porous materials

Boström¹,

Malyi²,

Thiyam³

et al. 2016

EPL

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-Premelting of ice within pores in earth materials is shown to depend on the presence of vapor layers. For thick vapor layers between ice and pore surfaces, a nanosized water sheet can be formed due to repulsive Lifshitz forces. In the absence of vapor layers, ice is inhibited from melting near pore surfaces. In between these limits, we find an enhancement of the water film thickness in silica and alumina pores. In the presence of metallic surface patches in the pore, the Lifshitz forces can dramatically widen the water film thickness, with potential complete melting of the ice surface.At the interface between ice and a dissimilar material, interfacial melting can occur. In some cases this melting can become unbounded resulting in complete interfacial melting of ice. This case is here referred to as premelting in the case of the vapor-ice interface. [1, 2] In porous media, premelting of ice is here shown to depend on the presence of diluted gas layers between ice and pore surface as well as on the optical properties of the surface material. This ought to be important to account for in any realistic modeling that aims at understanding how liquid water can be present in frozen pores on icy planets and in permafrost regions. Different surface materials including silica (serving as model for rock composed of quartz), alumina, and gold are studied. We show how enhanced concentrations of liquid water can be induced in pores depending on the nature of the surface materials and the thickness of the vapor layers. Our model system is shown in Fig.

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Casimir‐Lifshitz Optical Resonators: A New Platform for Exploring Physics at the Nanoscale

Esteso,

Frustaglia,

Carretero‐Palacios

et al. 2023

Advanced Physics Research

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The Casimir‐Lifshitz force, FC − L, has become a subject of great interest to both theoretical and applied physics communities due to its fundamental properties and potential technological implications in emerging nano‐scale devices. Recent cutting‐edge experiments have demonstrated the potential of quantum trapping at the nano‐scale assisted by FC − L in metallic planar plates immersed in fluids through appropriate stratification of the inner dielectric media, opening up new avenues for exploring physics at the nano‐scale. This review article provides an overview of the latest results in Casimir‐Lifshitz based‐optical resonator schemes and their potential applications in fields such as microfluidic devices, bio‐nano and micro electromechanical systems (NEMS and MEMS), strong coupling, polaritonic chemistry, photo‐chemistry, sensing, and metrology. The use of these optical resonators provides a versatile platform for fundamental studies and technological applications at the nano‐scale, with the potential to revolutionize various fields and create new opportunities for research.

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Casimir force between atomically thin gold films

Cited by 18 publications

References 48 publications

Casimir and van der Waals energy of anisotropic atomically thin metallic films

Casimir and van der Waals energy of anisotropic atomically thin metallic films

The influence of Lifshitz forces and gas on premelting of ice within porous materials

Casimir‐Lifshitz Optical Resonators: A New Platform for Exploring Physics at the Nanoscale

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