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Microfabricated optically encoded particles

IP.com Disclosure Number: IPCOM000016421D
Original Publication Date: 2003-Jan-21
Included in the Prior Art Database: 2003-Jun-21

Publishing Venue

IBM

Abstract

Disclosed is a device comprised of particles made from layers of reflective, refractive or absorptive materials to achieve a large number of distinctively "colored" particles which may be optically decoded for sizes down to the micrometer scale. Such distinctive particles are currently of interest as carriers of distinctive biomolecules, such as DNAs, as they allow parallel measurements of many different molecules, each identifiable through the encoded particle. In commercially available embodiments such particles are commonly available as polymer beads loaded with varying amounts of spectrally distinct dyes or colored particles.