  We investigate the structure and phase behavior of the Stockmayer fluid in
the presence of nonuniform electric fields using molecular simulation. We find
that an initially homogeneous vapor phase undergoes a local phase separation in
a nonuniform field due to the combined effect of the field gradient and the
fluid vapor--liquid equilibrium. This results in a high density fluid
condensing in the strong field region. The system polarization exhibits a
strong field dependence due to the fluid condensation.
