With modern technology, DNA strands of any predetermined sequence can be synthesized and "cloned" in vitro at relatively low cost, and the availability of such carefully defined molecular material has led scientists to seek for novel applications of DNA outside the biological realm. A number of DNA-based computing schemes have been proposed and tested. There is also interest in using DNA as a building material on the nanometer scale.
Interest in DNA conductivity, apart from its biological function, has heightened in recent years, as computer-chip technology continues to develop ways of making chips from smaller and smaller components. The components still need to be wired together, and the size of the wires has to decrease if more powerful chips with larger numbers of components are to be made. Thus the prospect of being able to use individual DNA molecules as "wires" to connect the elements in future generations of integrated circuits (chips) is quite attractive.
To describe an individual molecule as a conductor requires carefully defining what being a conductor might mean on a molecular level.
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