How to observe the giant thermal effect in the Casimir force for graphene systems

Abstract

A differential measurement scheme is proposed which allows for a clear observation of the giant thermal effect for the Casimir force, that was recently predicted to occur in graphene systems at short separation distances. The difference among the Casimir forces acting between a metal-coated sphere and the two halves of a dielectric plate, one uncoated and the other coated with graphene, is calculated in the framework of the Dirac model using the rigorous formalism of the polarization tensor. It is shown that in the proposed configuration both the difference among the Casimir forces and its thermal contributioncan be easily measured using already existing experimental setups. An observation of the giant thermal effect should open opportunities for modulation and control of dispersion forces in micromechanical systems based on graphene and other novel 2D-materials.

13 pages, 3 figures; accepted for publication in Phys. Rev. A

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• Thermal effect in the Casimir force for graphene and graphene-coated substrates: Impact of nonzero mass gap and chemical potential
• Casimir and Casimir-Polder Forces in Graphene Systems: Quantum Field Theoretical Description and Thermodynamics
• Quantum field theoretical description of the Casimir effect between two real graphene sheets and thermodynamics
• The Casimir effect for fermionic currents in conical rings with applications to graphene ribbons
• The Casimir effect in graphene systems: Experiment and theory
• On the convergence of the polarization tensor in space-time of three dimensions
• The Casimir-Polder interaction of an atom and real graphene sheet: Verification of the Nernst heat theorem
• Casimir effect for fermion condensate in conical rings
• Reflectance of graphene-coated dielectric plates in the framework of Dirac model: Joint action of energy gap and chemical potential