Patent ID: 7241629
Filing Date: 2007-07-10
Classification: B01J,B82Y,C03C,C40B,G01N

Abstract:
1. A detectable label comprising a glass particle doped with a plurality of rare earth elements, which are arranged in a pattern or array to provide a unique identification code to identify a functional group attached thereto, wherein the functional group is selected from the group consisting of a nucleic acid, an antibody, a protein, and an enzyme, and wherein the rare earth element is selected from the group consisting of Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, U, and combinations thereof, and whereby the particle has a diameter of between 10 microns and 100 microns; and the particle is a fiber having a cross-section including an array of layers, each of the layers having an optical property different from an optical property of adjacent layers.