ABSTRACT
In this chapter we discuss proposals for nanoelectronic circuit architectures, and we focus on those approaches which are different from the usual wired interconnection schemes employed in conventional silicon-based microelectronics technology. In particular, we discuss the
Quantum-Dot Cellular Automata
(QCA) concept, which uses physical interactions between closely spaced nanostructures to provide local connectivity. We also highlight an approach to molecular electronics that is based on the (imperfect) chemical self-assembly of atomic-scale switches in crossbar arrays and software solutions to provide defect-tolerant reconfiguration of the structure.
