SERS substrate of Ag decorated flexible wrinkled nanostage and anti-counterfeiting application

IF 6.3 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Applied Surface Science Pub Date : 2024-12-12 DOI:10.1016/j.apsusc.2024.162071

Yuxia Wang, Yongjun Zhang, Yaxin Wang, Fan Zhang, Hexing Ren, Renxian Gao, Kun Zhang, Fengyi Zhang, Rufei Cui, Xiaoyu Zhao

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引用次数: 0

Abstract

The flexible SERS substrates have received great interests in recent years due to the feature of deformations and portability. In this paper, the flexible SERS substrate of the Ag/PET wrinkled nanostage array were fabricated by self-assembly technology and plasma etching technology based on transparent PET film. The three-dimensional nanostage composed of muti-wrinkled sidewalls improved significantly residence space for probe molecules. The decoration of Ag nanoparticles within these wrinkles resulted in a 10-fold SERS enhancement compared to rigid Si substrates with smooth surfaces, attributed to the formation of numerous uniform hot spots. Combining the various shapes of the nanostructures with the characteristics of SERS spectra, the flexible nanostage was used as the map of anti-counterfeiting coding. The average height, top diameter and bottom diameter of each nanostage formed a unique three-stage anti-counterfeiting code. At the same time, combined with the SERS spectra, the anti-counterfeiting bar code was further compiled according to the peak position and intensity. Our work provided an idea for the preparation of economical and high-performance flexible SERS substrate and broadened its application field.

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来源期刊

Applied Surface Science 工程技术-材料科学：膜

CiteScore

12.50

自引率

7.50%

发文量

3393

审稿时长

67 days

期刊介绍： Applied Surface Science covers topics contributing to a better understanding of surfaces, interfaces, nanostructures and their applications. The journal is concerned with scientific research on the atomic and molecular level of material properties determined with specific surface analytical techniques and/or computational methods, as well as the processing of such structures.