Bistable Propagation of Monostable Molecules in Molecular Field-Coupled Nanocomputing

The molecular Field-Coupling Nanocomputing (FCN) is considered as one of the most promising technologies which are intended to overcome the problems of CMOS scaling. The information is encoded in the charge distribution of molecules and propagated through intermolecular electrostatic interaction. In this work, we analyze the information propagation in monostable molecules. These molecules have been analyzed so far as isolated elements, describing the possibility of encoding the information in their dipole moment, yet it is not clear whether they allow the information propagation, or the information is lost after a few molecules. We define a parameter named “bistable coefficient” which directly links the size and the polarizability of the molecule, and the intermolecular distance to the propagation of the information. The bistable coefficient provides a metric for the characterization of the bistable propagation. We demonstrate in this work that the bistability of the molecule is not an essential requirement for achieving computation. Monostable molecules witch guarantee a minimum value of the bistable coefficient provides bistable propagation. We define a Safe-Operating Area which determines the constraints which monostable molecules must satisfy in order to provide bistable information propagation.