Using hydrogen and chlorine on Si(1 1 1) to store data

The interaction of a pyridine molecule with H and Cl atoms on an Si(1 1 1) surface is studied using a cluster model in conjunction with the B3LYP/6-31G level of theory. Regardless of the type of the neighboring atoms, the interaction of the pyridine with a hydrogen atom is very different from its interaction with a chlorine atom. This system is discussed in terms of our atomic data storage proposal.