Submicrometer metallic barcodes

S. R. Nicewarner-Peña, R. G. Freeman, B. D. Reiss, L. He, D. J. Peña, I. D. Walton, R. Cromer, C. D. Keating, M. J. Natan

Research output: Contribution to journalArticlepeer-review

1289 Scopus citations


We synthesized multimetal microrods intrinsically encoded with submicrometer stripes. Complex striping patterns are readily prepared by sequential electrochemical deposition of metal ions into templates with uniformly sized pores. The differential reflectivity of adjacent stripes enables identification of the striping patterns by conventional light microscopy. This readout mechanism does not interfere with the use of fluorescence for detection of analytes bound to particles by affinity capture, as demonstrated by DNA and protein bioassays.

Original languageEnglish
Pages (from-to)137-141
Number of pages5
Issue number5540
StatePublished - 5 Oct 2001
Externally publishedYes


Dive into the research topics of 'Submicrometer metallic barcodes'. Together they form a unique fingerprint.

Cite this