Molecular Electronic Logic and Memory


James M. Tour Departments of Chemistry, Mechanical Engineering and Materials Science, Rice University

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Electronic logic chips are used in many products today, from cell phones to robotic toys to automobiles and trucks, dishwashers and freezers, thermostats, and coffee makers. The most visible application of course is in our desktop and laptop computers. To enable further miniaturization of the circuitry used in these devices, recent research has focused on developing molecular-based logic and memory. In this chapter, we will review the state of the art in the development and characterization of molecular electronic logic and memory, with discussions of the quantum cellular array approach (QCA) (and the related electrostatic repulsion architecture) and the crossbar approach to building molecular circuits followed by a more in-depth look at very recent results from our laboratory concerning the NanoCell approach to molecular logic and memory.