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本文总结了近年来基于传播型表面等离激元(Propagating surface plasmons,PSPs)参与的表面增强拉曼(Surface-enhanced Raman scattering,SERS)技术和仪器方面的研究进展.内容主要包括3部分:(1)基于PSPs激励拉曼散射的装置和技术,包括在消逝场下激发PSPs共振增强拉曼的原理与装置、与表面等离子体共振(Surface plasmon resonance,SPR)传感技术的联用及新型结构的长程等离激元激励拉曼技术的研究进展;(2)通过引入局域型表面等离激元(Localized surface plasmons,LSPs)进一步增强SERS,进而实现PSPs-LSPs共同增强拉曼的超灵敏检测技术,包括在消逝场激发的PSPs基础上,增加纳米粒子实现的PSPs与LSPs共同增强拉曼的原理、装置,以及用该方法进行生物体系的免疫识别检测,此外,还在微纳周期结构上实现了PSPs与LSPs共同激励拉曼;(3)基于PSPs耦合的定向SERS技术,包括在消逝场结构和周期结构上实现SERS定向耦合发射以达到高激发和高收集效率的新技术.
In this paper, we summarize the research progress of surface-enhanced Raman scattering (SERS) based on Propagating surface plasmons (PSPs) and instruments in recent years, including three parts: ( 1) Devices and techniques for stimulating Raman scattering based on PSPs, including the principle and device of stimulating enhanced resonance Raman scattering of PSPs in the evanescent field, combined with surface plasmon resonance (SPR) sensing technology, and new structure (2) further enhance the SERS by introducing localized localized plasmons (LSPs), and then achieve PSPs-LSPs co-enhanced Raman super-sensitivity The detection techniques, including the PSPs stimulated by the evanescent field, based on the principle and device for increasing Raman by increasing the interaction between PSPs and LSPs realized by nanoparticles, and the immune recognition detection by the biological system by the method are also carried out in the micro-nano periodical structure (3) directional SERS based on PSPs coupling, including SERS directional coupling in the evanescent field structure and periodic structure Launch to achieve high excitation and high collection efficiency of new technologies.