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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银装饰柔性起皱纳米级SERS衬底及其防伪应用

近年来，柔性SERS基板因其可变形性和可移植性而受到广泛关注。本文在透明PET薄膜的基础上，采用自组装技术和等离子体刻蚀技术制备了Ag/PET皱褶纳米级阵列柔性SERS衬底。由多个皱褶侧壁组成的三维纳米级显著提高了探针分子的驻留空间。由于形成了许多均匀的热点，与具有光滑表面的刚性Si衬底相比，银纳米颗粒在这些皱纹内的装饰导致SERS增强10倍。结合纳米结构的不同形状和SERS光谱特征，将柔性纳米级作为防伪编码的图谱。每个纳米级的平均高度、上直径和下直径形成了独特的三级防伪码。同时，结合SERS光谱，根据峰值位置和强度进一步编制防伪条形码。为制备经济高效的柔性SERS基板提供了思路，拓宽了其应用领域。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.