新型凹锥形表面增强拉曼散射光纤探针的制备

发布时间：2018-06-26 20:09

本文选题：光学制造 + 拉曼散射　；参考：《中国激光》2017年02期

【摘要】：研制了一种新型凹锥形表面增强拉曼散射(SERS)光纤探针,研究了光纤探针凹锥形结构的制备方法,分析了凹锥光纤探针形貌与腐蚀时间的关系,通过化学自组装法将金纳米颗粒固化到凹锥内表面,制成凹锥SERS光纤探针,并测试了其远程SERS检测性能。结果表明,凹锥形光纤探针具有更低的光纤拉曼光谱背底,约为同种光纤制备的锥形探针的1/3;在633nm的激发波长下,固化金纳米颗粒的凹锥探针对于罗丹明6G(R6G)溶液的拉曼光谱远程检测浓度低至100nmol/L。这种凹锥形结构使基底不易脱落,探针不易损坏。基于上述优点,该种凹锥形光纤探针可能在SERS远程检测领域具有潜在的应用价值。
[Abstract]:A novel concave surface enhanced Raman scattering (SERS) fiber probe was developed. The fabrication method of concave fiber probe was studied, and the relationship between the morphology of concave fiber probe and corrosion time was analyzed. Gold nanoparticles were solidified onto the inner surface of concave cone by chemical self-assembly method to make concave SERS fiber probe and its remote SERS detection performance was tested. The results show that the concave tapered fiber probe has a lower bottom of the fiber Raman spectrum, which is about 1 / 3 of the conical probe prepared by the same optical fiber, and at the excitation wavelength of 633nm, The concentration of the concave cone probe of solidified gold nanoparticles in Rhodamine 6G (R6G) solution is as low as 100nmol / L by Raman spectroscopy. The concave conical structure makes the substrate not easy to fall off and the probe not to be damaged. Based on the above advantages, the concave tapered fiber probe may have potential application value in SERS remote detection field.
【作者单位】：上海大学特种光纤与光接入网重点实验室;上海大学通信与信息工程学院;
【基金】：国家自然科学基金(61027015,61177088,61475095,61575120) 上海大学特种光纤与光接入网省部共建国家重点实验室培育基地开放课题(SKLSFO2012-01,SKLSFO2013-02,SKLSFO2015-01)
【分类号】：TN253

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