Casimir-Polder Interaction of an Atom with a Cavity Wall Made of Phase-Change Material out of Thermal Equilibrium
arXiv:2101.06995 · doi:10.3390/atoms9010004
Abstract
We consider the out-of-thermal-equilibrium Casimir-Polder interaction between atoms of He, Na, Cs, and Rb and a cavity wall made of sapphire coated with a vanadium dioxide film which undergoes the dielectric-to-metal phase transition with increasing wall temperature. Numerical computations of the Casimir-Polder force and its gradient as the functions of atom-wall separation and wall temperature are made when the latter exceeds the temperature of the environment. The obtained results are compared with those in experiment on measuring the gradient of the Casimir-Polder force between Rb atoms and a silica glass wall out of thermal equilibrium. It is shown that the use of phase-change wall material increases significantly the force magnitude and especially the force gradient, as opposed to the case of dielectric wall.
15 pages, 7 figures
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- Nonequilibrium Casimir-Polder Force between Nanoparticles and Graphene-Coated Silica Plate: Combined Effect of the Chemical Potential and Mass Gap
- Casimir-Polder Force on Atoms or Nanoparticles from the Gapped and Doped Graphene: Asymptotic Behavior at Large Separations
- Optical forces on an oscillating dipole near VO phase transition
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