4 research outputs found
Dynamical Casimir-Polder atom-surface interaction
We have calculated dynamical Casimir-Polder interaction force between a
moving ground state atom and a flat polarizable surface. The velocity of an
atom can be close to the velocity of light. The material properties are taken
into account using a single oscillator model of the atomic dynamic
polarizability and the Drude dielectric function of a metal substrate. The
limit cases of nonrelativistic velocities and an ideal metal substrate are also
considered. We have found specific dependence of the calculated forces on the
velocity (energy), distance and material properties.Comment: 21 pages,11 figures, 1 table; improved version of previous paper;
submitted to Surface Scienc
Radiative heat exchange of spherical particles with metal and insulator plates
Radiative heat exchange of spherical particles between each other and with
thick polarizable plates is studied in the framework of fluctuation
electrodynamics. An additive dipole approximation for the thermal conductance
of micrometer sized particles is proposed. The numerical calculations are
performed for particles and plates made of gold and silica. Several theoretical
models of radiative conductance are compared and juxtaposed with the known
experimental data.Comment: 19 pages, 7 figure