Casimir pressure in peptide films on metallic substrates: Change of sign via graphene coating

@inproceedings{Klimchitskaya2021CasimirPI,
title={Casimir pressure in peptide films on metallic substrates: Change of sign via graphene coating},
author={Galina L. Klimchitskaya and Vladimir M. Mostepanenko and E. N. Velichko},
year={2021}
}
• Published 11 June 2021
• Physics
We find that the Casimir pressure in peptide films deposited on metallic substrates is always repulsive which makes these films less stable. It is shown that by adding a graphene sheet on top of peptide film one can change the sign of the Casimir pressure by making it attractive. For this purpose, the formalism of the Lifshitz theory is extended to the case when the film and substrate materials are described by the frequency-dependent dielectric permittivities, whereas the response of graphene…

References

SHOWING 1-10 OF 79 REFERENCES
Casimir free energy and pressure for magnetic metal films
• Physics
• 2016
We examine the Casimir free energy and pressure of magnetic metal films, which are free-standing in vacuum, sandwiched between two dielectric plates, and deposited on either nonmagnetic or magnetic
Fluctuation-induced free energy of thin peptide films.
• Physics
Physical review. E
• 2019
The Lifshitz theory of dispersion forces is applied to find a contribution to the free energy of peptide films that is caused by the zero-point and thermal fluctuations of the electromagnetic field and it is shown that thefree energy of a freestanding peptide film is negative and thus contributes to its stability.
Effect of increased stability of peptide-based coatings in the Casimir regime via nanoparticle doping
• Physics
• 2020
We find that thin peptide films and coatings doped with metallic nanoparticles are more stable due to the role of electromagnetic fluctuations. It is shown that for the doped freestanding in vacuum
Theory of the Casimir interaction from graphene-coated substrates using the polarization tensor and comparison with experiment
• Physics
• 2014
We propose a theory of the thermal Casimir interaction for multilayered test bodies coated with a graphene sheet. The reflection coefficients on such structures are expressed in terms of the
Characteristic properties of the Casimir free energy for metal films deposited on metallic plates
• Physics
• 2016
The Casimir free energy and pressure of thin metal films deposited on metallic plates are considered using the Lifshitz theory and the Drude and plasma model approaches to the role of conduction
Thermal effect in the Casimir force for graphene and graphene-coated substrates: Impact of nonzero mass gap and chemical potential
• Physics
• 2017
The rigorous finite-temperature QED formalism of the polarization tensor is used to study the combined effect of nonzero mass gap $m$ and chemical potential $\mu$ on the Casimir force and its thermal
Casimir free energy of dielectric films: classical limit, low-temperature behavior and control.
• Physics
Journal of physics. Condensed matter : an Institute of Physics journal
• 2017
It is argued that physically correct values are obtained by disregarding the role of dc conductivity in the framework of two calculation approaches, and there are material-dependent and universal classical limits in the former and latter cases.
Influence of the chemical potential on the Casimir-Polder interaction between an atom and gapped graphene or a graphene-coated substrate
• Physics
• 2018
We present a formalism based on first principles of quantum electrodynamics at nonzero temperature which permits to calculate the Casimir-Polder interaction between an atom and a graphene sheet with
Casimir free energy of metallic films: Discriminating between Drude and plasma model approaches
• Physics
• 2015
We investigate the Casimir free energy of a metallic film either sandwiched between two dielectric plates or in vacuum. It is shown that even for a thin film of several tens of nanometer thickness
Casimir and van der Waals energy of anisotropic atomically thin metallic films
• Physics
• 2015
We discuss the van der Waals (Casimir) free energies and pressures of thin metallic films, consisting of from one to fifteen atomic layers, with regard to the anisotropy in their dielectric