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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 12, Iss. 1 — Jan. 12, 2004
  • pp: 143–148

Information coding and retrieving using fluorescent semiconductor nanocrystals for object identification

Shoude Chang, Ming Zhou, and Chander P. Grover  »View Author Affiliations


Optics Express, Vol. 12, Issue 1, pp. 143-148 (2004)
http://dx.doi.org/10.1364/OPEX.12.000143


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Abstract

The spectral features, i.e., wavelength and intensity, of fluorescence generated from semiconductor nanocrystals (quantum dots) can be used for coding information. Unlike the 1-D and 2-D barcodes, the information carrier is applied to a very small area and hardly visible. The information retrieving by a fluorospectrometer is not subjected to the changes of rotation and scale. A de-convolution-based algorithm is used to separate the overlapped spectral profiles. This technology can be applied to small products labeling, document security and object identification.

© 2004 Optical Society of America

OCIS Codes
(040.0040) Detectors : Detectors
(070.4790) Fourier optics and signal processing : Spectrum analysis
(120.4630) Instrumentation, measurement, and metrology : Optical inspection

ToC Category:
Research Papers

History
Original Manuscript: December 5, 2003
Revised Manuscript: December 19, 2003
Published: January 12, 2004

Citation
Shoude Chang, Ming Zhou, and Chander Grover, "Information coding and retrieving using fluorescent semiconductor nanocrystals for object identification," Opt. Express 12, 143-148 (2004)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-12-1-143


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