Silver-based nanodisk codes

Matthew J. Banholzer, Kyle D. Osberg, Shuzhou Li, Bryan F. Mangelson, George C Schatz, Chad A. Mirkin

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

We report a novel method for synthesizing silver-based nanodisk code (NDC) structures using on-wire lithography, where we employ milder synthetic and etching conditions than those used to synthesize the analogous gold structures. The silver structures exhibit stronger surface-enhanced Raman scattering signals than their Au counterparts at 633 and 532 nm excitation and, therefore, lead to lower limits of detection when used in the context of DNA-based detection assays. Finally, use of two enhancing nanostructured materials in one disk code dramatically increases the information storage density for encoding. For example, a disk code consisting of 5 gold disk pairs has 13 unique combinations of enhancing patterns, while one with 5 disk pairs that can be either gold or silver has 98.

Original languageEnglish
Pages (from-to)5446-5452
Number of pages7
JournalACS Nano
Volume4
Issue number9
DOIs
Publication statusPublished - Sep 28 2010

Fingerprint

Silver
Gold
silver
gold
Nanostructured materials
Lithography
Raman scattering
Etching
Assays
DNA
Wire
Data storage equipment
coding
lithography
deoxyribonucleic acid
etching
wire
Raman spectra
excitation

Keywords

  • biodetection
  • encoding
  • on-wire lithography
  • SERS
  • surface-enhanced Raman scattering
  • tagging

ASJC Scopus subject areas

  • Engineering(all)
  • Materials Science(all)
  • Physics and Astronomy(all)

Cite this

Banholzer, M. J., Osberg, K. D., Li, S., Mangelson, B. F., Schatz, G. C., & Mirkin, C. A. (2010). Silver-based nanodisk codes. ACS Nano, 4(9), 5446-5452. https://doi.org/10.1021/nn101231u

Silver-based nanodisk codes. / Banholzer, Matthew J.; Osberg, Kyle D.; Li, Shuzhou; Mangelson, Bryan F.; Schatz, George C; Mirkin, Chad A.

In: ACS Nano, Vol. 4, No. 9, 28.09.2010, p. 5446-5452.

Research output: Contribution to journalArticle

Banholzer, MJ, Osberg, KD, Li, S, Mangelson, BF, Schatz, GC & Mirkin, CA 2010, 'Silver-based nanodisk codes', ACS Nano, vol. 4, no. 9, pp. 5446-5452. https://doi.org/10.1021/nn101231u
Banholzer MJ, Osberg KD, Li S, Mangelson BF, Schatz GC, Mirkin CA. Silver-based nanodisk codes. ACS Nano. 2010 Sep 28;4(9):5446-5452. https://doi.org/10.1021/nn101231u
Banholzer, Matthew J. ; Osberg, Kyle D. ; Li, Shuzhou ; Mangelson, Bryan F. ; Schatz, George C ; Mirkin, Chad A. / Silver-based nanodisk codes. In: ACS Nano. 2010 ; Vol. 4, No. 9. pp. 5446-5452.
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