High-density bead arrays

By functionalizing the beads with receptors, the result is a dense array of those receptors densities as high as 250000 elements in a 1 -mm2 area have been achieved. One of the inviting aspects of this approach is its operational simplicity. Any chemical library, combinatorial or otherwise, that can be formatted onto beads can be densely arrayed with no precision equipment whatsoever. All array-forming processes are bulk processes. 

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