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System and method for programmable illumination pattern generation

  • US 20040072372A1
  • Filed: 07/21/2003
  • Published: 04/15/2004
  • Est. Priority Date: 04/25/1996
  • Status: Active Grant
First Claim
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1. A process of spatially encoding a planar assembly of particles formed on a substrate by sequential injection of a multiplicity of groups of particles of at least one type, said process comprising:

  • providing a substrate comprising a light-sensitive planar electrode, the light-sensitive electrode being aligned with another planar electrode in substantially parallel arrangement, with said electrodes being separated by a gap, and the gap containing an electrolyte solution which is in contact with said electrodes;

    placing a group of at least one type of particles selected from a reservoir containing said at least one type of particles into the electrolyte solution so as to confine said injected particles into a first segment of the light-sensitive electrode delineated by a first illumination pattern on said light-sensitive electrode;

    translocating said confined particles to a second segment of the light-sensitive electrode delineated by a second illumination pattern on said light-sensitive electrode; and

    merging said particles with any pre-existing planar assembly of particles previously formed in said second segment of the light-sensitive electrode.

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