Compact dual-fiber surface-enhanced Raman scattering sensor with monolayer gold nanoparticles self-assembled on optical fiber.
Compact dual-fiber surface-enhanced Raman scattering sensor with monolayer gold nanoparticles self-assembled on optical fiber.
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DOI：
10.1364/ao.57.007931
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发表时间：
2018-09
期刊：
影响因子：
1.9
通讯作者：
Hongwen Zhou;Jiansheng Liu;Haitao Liu;Zheng Zheng-Zheng
中科院分区：
文献类型：
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作者：
Hongwen Zhou;Jiansheng Liu;Haitao Liu;Zheng Zheng-Zheng
采用自组装方法和双光纤结构，实现了一种紧凑、低成本、高灵敏度、快速表面增强拉曼散射（SERS）光纤传感器。通过检测 10 ppm 罗丹明 B 分析物的 SERS 信号，优化了传感器参数，如耦合角度、光纤类型和相应的玻璃基板结构。 SERS信号强度与激发光残余峰强度的比率被用作优化过程中的重要参数。研究了传感器特性，例如 SERS 信号对激励功率的依赖性、与激励时间相关的稳定性以及可重复使用性。它的尺寸与微流控结构的兼容性使其成为集成到微流控芯片中的潜在候选者。
Employing a self-assembly method and dual-fiber structure, a compact, low-cost, highly sensitive, fast surface-enhanced Raman scattering (SERS) optical fiber sensor was realized. Through detecting a SERS signal of 10 ppm rhodamine B analyte, sensor parameters such as coupling angle, fiber types, and corresponding glass substrate structure were optimized. The ratio of the SERS signal intensity to excitation light residual peak intensity was used as a significant parameter during the optimization process. Sensor characteristics such as the SERS signal dependence on excitation power, stability related to excitation time, and reusability were studied. Its compatibility in size with microfluidic structure would make it a prospective candidate for integrating into a microfluidic chip.