Techniques to automatically manage overlapping objects are described. In the compounds of Formula 1, A1 and A2 are each an aromatic ring, a 5-6-membered heterocyclic ring, an aromatic ring fused to a heterocyclic ring, a phenyl ring fused to a heterocyclic ring, or a cycloalkyl ring. A first layer of a first capacitor dielectric material is formed over the first capacitor electrode. All of the patient support surface can be covered by the x-ray cassettes.