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Molecular electronics are difficult to fabricate with precise positioning of large numbers of devices and their connections. Self-assembly techniques can create such circuits but with some random variation in their connection locations and characteristics. Using simulations, we show how to produce reliable circuits in spite of this variation by adding enough redundant components to pass a sharp threshold in likely circuit correctness. As an example of this approach, we examine a demultiplexer circuit, which is useful for connecting nanoscale circuits with larger conventional circuits.
Date of Publication: March 2006