Mesophysics and Granular Models

Now lets continue shrinking until our system is smaller yet. The realm of mesophysics currently incorporates microelectronics, quantum computing and molecular biology. Mesophysics asks such questions as how do we transport electrons and how might we achieve higher densities of components in our microelectronic silicon-based circuits. In conventional circuits, electrons flow as would streams of water confined within the boundaries of their conductors. The wider a conductor is, the less the conductor confines a carrier and the more continuous the flow. If we shrink a conductor's diameter as much as possible, we must ask how do electrons squeeze past the narrowest places? Because of the coulomb blockade effect, electrons can distribute themselves to pass in single file, but a conductor's shape and properties and how electron motion and quantum fluctuation interact create many complexities we do not yet understand. But we have several analogies.

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