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基于半导体和贵金属材料的高灵敏光纤SERS探测器

Yafang Pan¹, Xiaolong Song¹, Shi Wang¹

¹State Key Laboratory of Metastable Materials Science and Technology, Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|August 28, 2025

概括

研究人员使用Cu2O@Ag核心外粒子开发了一种高度敏感的光纤表面增强拉曼散射 (SERS) 探测器. 这种便携式SERS探测器显示出各种分子的极佳检测极限,

科学领域:

材料科学
纳米技术
分析化学

背景情况:

表面增强拉曼散射 (SERS) 需要敏感的基板来检测微量分析物.
将半导体和贵金属的特性结合起来可以提高SERS的性能.
光纤为SERS应用提供了便携性.

研究的目的:

使用光纤开发一个便携式和高度灵敏的SERS探测器.
为了比较光纤SERS探针的不同制备方法.
评估开发的探测器对各种分析物的检测能力.

主要方法:

制备Cu2O@Ag核心外纳米粒子.
通过静电吸附和化学结合制造光纤SERS探头.
使用Rhodamine 6G (R6G) 和4-nitrophenyl thiophenol (4-NTP) 的探针性能表征.
探测器在梨中的应用.

主要成果:

通过化学结合准备的光纤SERS探测器显示出卓越的拉曼增强.
探测器的低检测度为10-6M.
探测器在梨中检测到0.5毫克/升,明显低于国家标准.
在纤维SERS探测器中观察到高均性和可重复性.

结论:

一个高度灵敏和便携式光纤SERS探测器成功开发.
化学结合方法对于制造高性能SERS探头是有效的.
开发的探测器显示了在真实世界样本中敏感和可靠的分析物检测的巨大潜力.

关键词:

化学结合光纤探测器其他国家半导体西拉姆

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