Defect characterization and testing of QCA devices and circuits: A survey

QCA (Quantum-dot Cellular Automata) is the promising future nanotechnology for computing. In QCA, the cells must be aligned properly at nano scales for proper functioning. Defects may occur in synthesis and deposition phase. So the defect analyses and testing cannot be ignored. This paper presents a survey on QCA basics, defect characterization and various testing aspects of QCA.