4 days of experiments at 33BM beamline scheduled. We will be investigating the structure of heterostructures of iridates and titanates to determine structural order and search for possible topological polar structures. This will be done with synchrotron x-ray diffraction using 2D and 3D mapping of reciprocal space to find superstructure features corresponding to these emergent orders. See recent work by our collaborators at UC Berkeley for more details.