Issue 15, 2021

Surface-enhanced Raman scattering-based molecular encoding with gold nanostars for anticounterfeiting applications

Abstract

Recently, surface-enhanced Raman scattering (SERS) joined other optical methods in making novel anticounterfeiting materials due to the fact that abundant molecular fingerprints in Raman spectra can be less susceptible to fraud. Using these molecular features, it is critical to make novel nanostructures with increased SERS enhancement and stability. Herein, we synthesized star-shaped gold nanoparticles as SERS substrates and applied various Raman probes with these gold nanostars to make SERS tags. The encoded molecular information was successfully decoded using principal component analysis (PCA). These colloidal tags can be further stabilized when embedded in a polymer matrix. We made a prototype ballpoint pen that can do simple writing with these secret SERS inks.

Graphical abstract: Surface-enhanced Raman scattering-based molecular encoding with gold nanostars for anticounterfeiting applications

Supplementary files

Article information

Article type
Paper
Submitted
16 Agd 2021
Accepted
04 Qas 2021
First published
07 Qas 2021
This article is Open Access
Creative Commons BY-NC license

Mater. Adv., 2021,2, 5116-5123

Surface-enhanced Raman scattering-based molecular encoding with gold nanostars for anticounterfeiting applications

Y. Huo, S. Curry, A. Trowbridge, X. Xu and C. Jiang, Mater. Adv., 2021, 2, 5116 DOI: 10.1039/D1MA00348H

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