IDENTIFICATION OF OBJECTS USING PLASMA RESONANT PARTICLES

摘要

A method and apparatus for identifying an object having a pattern of plasmon resonant particles (PREs) distributed in or on the object are disclosed. In the method, a field containing the pattern is illuminated, and one or more spectral emission characteristics of the light-scattering particles in the field are detected. From this data, an image of positions and spectral characteristic values in the field is constructed, allowing PREs with a selected spectral signature to be discriminated from other light-scattering entities, to provide information about the field. The image may be compared to a database of reference images to identify or validate the object.

主权项

1. A device for identifying an object, comprising:
a film comprising a pattern of plasmon resonant entities (PREs) deposited on at least a portion of a surface of the object, wherein the pattern of PREs produces an image comprising detectable spectral emissions when excited with a light source, wherein the image corresponds to one or more reference images stored within a database, and wherein the object is identified when the image is compared to and matches the one or more reference images.