Molecular Cellular Automata at Notre Dame

November 21, 2007

Here’s a link to a group of scientists at Notre Dame working on making cellular automata devices out of quantum dots, ultimately to make reversible computers. The idea is that there are molecules that can exist in bi-stable states, typically with four molecular groups per cell, arranged in a square. If each cell has two excess electrons, coulomb interactions will keep the charges along either of the diagonals of the square. By arranging the cells in grids, they can do things like majority polling and the like.

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