  Dust aggregates are formed in a laboratory plasma as monodisperse spheres are
accelerated in a self-excited dust density wave. The asymmetric charge on the
aggregates causes them to rotate as they interact with the sheath electric
field or other aggregates The charge and dipole moment can be estimated and
compared to numerical models. "Dust molecules", where two particles are
electrostatically bound but not physically touching, are also observed.
