journal article·2022-11-09

Designed Growth of AgNP Arrays for Anti-counterfeiting Based on Surface-Enhanced Raman Spectroscopy Signals

Zhifeng Yang, Xiaoyu Zhao, Jia Liu, Jiahong Wen, Fengyi Zhang, Xiaojie Guo, Kun Zhang, Jian Zhang, Aofang Wang, Renxian Gao, Yaxin Wang, Yongjun Zhang

ACS Applied Materials & Interfaces· Volume 14· Issue 44
Publisher page

Abstract

Based on etched PS sphere arrays, the different growths of Ag nanoparticles with tunable LSPR are designed when SiO2-25 nm/Ag-30 nm/SiO2-100 nm sandwich nanocavity structures are annealed at 500 °C, including the hexagonal silver nanoparticle rings, circular silver nanoparticle rings, and aggregated silver nanoparticles. The uniformity of particle size and regularity of position generate enhanced electromagnetic field and good surface-enhanced Raman spectroscopy signals as confirmed by UV–vis observation and finite difference time domain method simulation. The developed nanostructures are effectively used as stable, nonreproducible, and markable anti-counterfeiting signs.
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Research context

OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Nanomaterials and Printing Technologies · Nanoparticles: synthesis and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou310018, P. R. China

The College of Electronics and Information, Hangzhou Dianzi University, Hangzhou310018, P. R. China

Zhejiang Laboratory, Hangzhou311100, P. R. China

Medical School of Hangzhou Dianzi University, Hangzhou310018, P. R. China

College of Physical Science and Technology, Xiamen University, Xiamen361005, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Zhejiang Lab · Zhejiang Province

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