Patent ID: 8895072
Filing Date: 2014-11-25
Classification: A61K,B82Y,C01P,C09C,G01N,H01L,Y10T

Abstract:
1. A microstructure comprising (a) a core; and (b) a plurality of distinct layers surrounding the core; wherein the plurality of distinct layers comprises (i) quantum dot-containing layers, and (ii) spacer layers not containing quantum dots, wherein there are at least two quantum dot containing layers; wherein the quantum dots are present in each quantum dot containing layer at a defined intensity level, wherein each quantum dot containing layer comprises a plurality of a single type of quantum dot that is different relative to quantum dots contained in any of the other quantum dot containing layers, wherein each quantum dot-containing layer is separated from other quantum dot containing layers by a spacer layer, and wherein a ratio of fluorescent intensities from the quantum dots in the plurality of quantum dot containing layers after simultaneous excitation defines a unique barcode for the microstructure.