  Analytical expressions are derived for the time-averaged, quasi-steady,
acoustic radiation force on a heated, spherical, elastic, solid microparticle
suspended in a fluid and located in an axisymmetric incident acoustic wave. The
heating is assumed to be spherically symmetric, and the effects of particle
vibrations, sound scattering, and acoustic microstreaming are included in the
calculations of the acoustic radiation force. It is found that changes in the
speed of sound of the fluid due to temperature gradients can significantly
change the force on the particle, particularly through perturbations to the
microstreaming pattern surrounding the particle. For some fluid-solid
combinations, the effects of particle heating even reverse the direction of the
force on the particle for a temperature increase at the particle surface as
small as 1 K.
