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US 11,222,249 B2Granted
Optically configurable charge-transfer materials and methods thereof
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsBryan James Kaehr, Joseph J. Reczek
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Abstract
The present invention relates to an optical code including a film of a charge-transfer material, as well as methods thereof. Described herein are optical codes having anisotropic and/or isotropic regions within the film, which can be provided in a pattern that serves as an optical code.
Claims11
A method of writing an optical code, the method comprising:
- providing a film comprising a charge-transfer material, wherein the charge-transfer material comprises a plurality of domains and wherein each of the plurality of domains comprises a donor moiety and an acceptor moiety;
- thermally melting the film to provide a first pattern disposed within the film, in which the first pattern comprises a plurality of first regions;
- and
- optionally erasing by thermally melting the first pattern.
1 more element
Dependencies are inferred from the claim text.