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基于暴露核心光纤的高灵敏 evanescent 波SERS 探测器及其应用

Luping Meng¹, Guangqiang Liu², Zongying Feng³

¹School of Optoelectronic Engineering, Zaozhuang University Zaozhuang 277160 China qfnumlp@126.com.

|March 17, 2025

概括

研究人员创建了一个新的光纤探头,使用银纳米柱在暴露的核心光纤 (ECF) 上. 这种表面增强的拉曼散射 (SERS) 探测器提供了灵敏的,在现场检测分析物,具有低限度的4-aminothiophenol.

科学领域:

光电学是指光电子产品.
纳米技术纳米技术
化学传感器化学传感器

背景情况:

渐变波纤维表面增强拉曼散射 (SERS) 探测器利用光纤的渐变场来提高灵敏度.
暴露的核心光纤 (ECF) 提供直接访问 evanescent 场,使强烈的光物质相互作用和高效的分析物透.
众所周知,由于等离子体效应,银纳米结构可以增强拉曼信号.

研究的目的:

开发一种方便,有效和可重复的方法来制造 evanescent 波纤维 SERS 探针.
在ECF上利用有序的银纳米柱阵列来增强 evanescent 场强度和光物质重叠.
为了证明探测器对特定分析物的敏感和现场检测的能力.

主要方法:

在暴露核心光纤 (ECF) 的曲面上制造有序的银纳米柱阵列.
利用增强的 evanescent 场和增加的表面积,以改善 SERS 检测.
在现场检测4-aminothiophenol (4-ATP) 和thiram使用开发的ECF SERS探针.

主要成果:

为4-氨基甲基醇 (4-ATP) 达到10-10M的低检测极限.
证明有效地在现场检测4-ATP和thiram.
探测器表现出高灵敏度和可重复性,这是由于ECF特性和银纳米柱阵列之间的协同作用.

结论:

展示了一种具有成本效益和可重现的方法,用于制造高效的 evanescent 波纤维 SERS 探针.
开发的ECF SERS探头显示了无标签传感和生物分子检测的巨大潜力.
结合ECF和银纳米柱阵列,为先进的化学传感应用提供了一个有前途的平台.

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