  The superfluid-crystal quantum phase transition of a system of purely
repulsive dipolar bosons in two dimensions is studied by Quantum Monte Carlo
simulations at zero temperature. We determine freezing and melting densities,
and estimate the energy per unit length of a macroscopic interface separating
the two phases. The results rule out the microemulsion scenario for any
physical realization of this system, given the exceedingly large predicted size
of the bubbles.
