Observability of thermal effects in the Casimir interaction from graphene-coated substrates

Abstract

Using the recently proposed theory, we calculate thermal effect in the Casimir interaction from graphene-coated metallic and dielectric substrates. The cases when only one or both of the two parallel plates are coated with graphene are considered. It is shown that the graphene coating does not influence the Casimir interaction between metals, but produces large impact for dielectrics. This impact increases with decreasing static dielectric permittivity of the plate material. The thermal correction to the gradient of the Casimir force between an Au sphere and graphene coated fused silica plate is calculated. It is shown to be significanlty greater than the total experimental error in the recently performed experiment, which is demonstrated to be only one step away from observation of the thermal effect from a graphene-coated substrate at short separation distances. To achieve this goal, one should increase the thickness of the fused silica film from 300 nm to 2000 nm.

13 pages, 4 figures, to appear in Phys. Rev. A; several minor changes are made in accordance to the Journal version

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• Impact of magnetic nanoparticles on the Casimir pressure in three-layer systems
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• Casimir and Casimir-Polder Forces in Graphene Systems: Quantum Field Theoretical Description and Thermodynamics
• Comparison of hydrodynamic model of graphene with recent experiment on measuring the Casimir interaction
• Quantum electrodynamic approach to the conductivity of gapped graphene
• Fluctuation-induced free energy of thin peptide films
• Nernst heat theorem for the thermal Casimir interaction between two graphene sheets
• Quantum field theoretical description of the Casimir effect between two real graphene sheets and thermodynamics
• How to confirm and exclude different models of material properties in the Casimir effect
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• The effect of agglomeration of magnetic nanoparticles on the Casimir pressure through a ferrofluid
• The Casimir effect in graphene systems: Experiment and theory
• Effect of increased stability of peptide-based coatings in the Casimir regime via nanoparticle doping
• On the convergence of the polarization tensor in space-time of three dimensions
• Attractive and repulsive fluctuation-induced pressure in peptide films deposited on semiconductor substrates
• Temperature Dependence of the Response Functions of Graphene: Impact on Casimir and Casimi-Polder Forces in and out of Thermal Equilibrium