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Design and Evaluation of a Reconfigurable Fault Tolerant Quantum-Dot Cellular Automata Gate

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Quantum-dot cellular automata (QCA) which encodes binary information by means of charge configuration of quantum-dot cells rather than current, represents a new computing platform at the nanotechnology level. On the plus side, it offers significant improvements over CMOS due to its low power consumption, high speed and small dimension, however on the negative side a large number of manufacturing defects are likely to occur requiring new fault tolerant architectures. The defects might occur in manufacturing or synthesis phases of the design process. In this paper, we present and analyze a novel reconfigurable fault tolerant gate. In addition to its reconfigurability property which makes it capable of covering some commonly used functions, the gate is designed in such a way that it is defect-tolerant against the synthesis phase defects. In order to simulate the functionality of the proposed gate, QCADesigner is used and related waveforms are presented.
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Document Type: Research Article

Publication date: February 1, 2013

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  • Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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