  We construct charged generalizations of the dilaton C-metric in various
four-dimensional theories, including STU gauged supergravity as well as a
one-parameter family of Einstein-Maxwell-dilaton theories whose scalar
potential can be expressed in terms of a superpotential. In addition, we
present time-dependent generalizations of the dilaton C-metric and dilaton
Ernst solutions, for which the time evolution is driven by the dilaton. These
C-metric solutions provide holographic descriptions of a strongly-coupled
three-dimensional field theory on the background of a black hole, a
gravitational soliton, and a black hole undergoing time evolution.
