Arithmetic Design on Quantum-Dot Cellular Automata Nanotechnology

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Quantum-dot cellular automata nanotechnology promises molecular digital circuits with ultra-high clock frequencies, to replace the traditional approaches reaching their physical limits. Although large scale utilization requires still several breakthroughs, there has been serious effort in digital design on this sunrise technology. This review describes the basic concepts of the nanotechnology and the most important existing designs, providing new research directions for the digital community.