  We study glass transitions in mixtures of elliptic and circular particles in
two dimensions using an orientation-dependent Lennard-Jones potential. Changing
anisotropic parameters of the potential, the size ratio, and the concentration,
we realize double glass, where both the particle positions and orientations are
disordered but still hold mesoscopic order. The ellipses are anchored around
the circular impurities in the homeotropic or planar directions. We examine
slowing-down of rotational and translational time-correlation functions.
Turnover motions of the ellipses are activated more frequently than the
configuration changes, where the latter cause the structural relaxation.
