一种具有完全填充光还原银纳米棱镜的简化中空芯光子晶体光纤 SERS 探针。

A Simplified Hollow-Core Photonic Crystal Fiber SERS Probe with a Fully Filled Photoreduction Silver Nanoprism.

机构信息

Collage of Physics and Energy, Shenzhen Key Lab. of Sensor Technol., Shenzhen University, Shenzhen 518060, China.

The Electronic Communication Department, Shenzhen Institute of Information Technology, Shenzhen 518172, China.

出版信息

Sensors (Basel). 2018 May 28;18(6):1726. doi: 10.3390/s18061726.

DOI:10.3390/s18061726

PMID:29843365

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6021811/

Abstract

In this paper, a simplified hollow-core photonic crystal fiber surface-enhanced Raman scattering (SERS) probe is presented. Silver nanoprisms are grown with a photoreduction method and account for the SERS, which have better electromagnetic enhancement than spherical silver nanoparticles at 785 nm. Due to the antiresonant reflecting guidance mechanism, the excited laser and SERS signal are effectively guided in such a fully filled hollow-core photonic crystal fiber SERS probe and complicated selective filling with target sample is avoided. Rhodamine 6G molecules are used as probe molecules and the simplified hollow-core photonic crystal fiber SERS probe is test. Detection of low concentration Rhodamine 6G down to 10 M is achieved with a short integration time of 300 ms.

摘要

本文提出了一种简化的空心光子晶体光纤表面增强拉曼散射（SERS）探针。采用光还原法生长银纳米棱镜，用于 SERS，在 785nm 处比球形银纳米粒子具有更好的电磁增强。由于反共振反射导光机制，激发激光和 SERS 信号有效地在这种全填充空心光子晶体光纤 SERS 探针中引导，并避免了复杂的目标样品选择性填充。罗丹明 6G 分子被用作探针分子，并对简化的空心光子晶体光纤 SERS 探针进行了测试。在 300ms 的短积分时间内，实现了对低浓度罗丹明 6G 检测，浓度低至 10M。