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Ag-coated cotton fabric as ultrasensitive and flexible SERS substrate
Journal of Industrial Textiles ( IF 3.2 ) Pub Date : 2021-07-11 , DOI: 10.1177/15280837211027781
Xueyan Bian 1 , Jiangtao Xu 1 , Yi Pu 1 , Jing Yang 1 , Ka-lam Chiu 1 , Shouxiang Jiang 1
Affiliation  

Surface enhanced Raman scattering (SERS) has proven to be increasingly valuable as an analytical tool since this phenomenon was first observed in 1973. However, challenges still exist to ensure their ability to access targeted analytes and adequate levels of sensitivity to them on irregular surfaces. Herein, silver (Ag) nanoparticles are deposited onto cotton fabric through magnetron sputtering to develop a flexible and ultrasensitive SERS-active substrate. To obtain a better enhancement effect, Ag nanoparticles of different sizes are produced by controlling the argon flow rate and the sputtering time. The finite-difference time-domain (FDTD) method and Raman mapping are used to explain the process behind Raman signal enhancement. The cotton fabric sample with Ag nanoparticles deposited at an argon flow rate of 200 sccm (labelled as AC-200) shows a high enhancement factor (EF) of 104 with a Methylene blue (MB) solution of 10−3 M, stability with a related standard deviation (RSD) of 1.03%, excellent reproducibility with an RSD of 1.92% and high sensitivity with 10−9 M of MB solution. Therefore, AC-200 demonstrates exceptional SERS signal reproducibility and stability for different types of chemical analytes and has the potential to be used in future practical applications.



中文翻译:

银涂层棉织物作为超灵敏和灵活的 SERS 基材

自 1973 年首次观察到这种现象以来,表面增强拉曼散射 (SERS) 已被证明作为一种分析工具越来越有价值。然而,仍然存在挑战,以确保它们能够在不规则表面上获取目标分析物并对其具有足够的灵敏度。在此,银 (Ag) 纳米粒子通过磁控溅射沉积在棉织物上,以开发出一种灵活且超灵敏的 SERS 活性基底。为了获得更好的增强效果,通过控制氩气流速和溅射时间来制备不同尺寸的Ag纳米颗粒。时域有限差分 (FDTD) 方法和拉曼映射用于解释拉曼信号增强背后的过程。4使用 10 -3 M的亚甲蓝 (MB) 溶液,稳定性,相关标准偏差 (RSD) 为 1.03%,出色的重现性,RSD 为 1.92%,使用 10 -9 M MB 溶液具有高灵敏度。因此,AC-200 对不同类型的化学分析物展示了出色的 SERS 信号重现性和稳定性,并有可能用于未来的实际应用。

更新日期:2021-07-12
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