Review of Recent Progress of Plasmonic Materials and Nano-Structures for Surface-Enhanced Raman Scattering.
Review of Recent Progress of Plasmonic Materials and Nano-Structures for Surface-Enhanced Raman Scattering.
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DOI：
10.3390/ma8063024
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发表时间：
2015-06
期刊：
影响因子：
--
通讯作者：
Kong X
中科院分区：
文献类型：
--
作者：
Wang AX;Kong X
表面增强拉曼散射（Sers）技术具有单分子灵敏度，由于其在化学和生物医学领域的巨大应用潜力而受到广泛关注。Sers传感高度依赖于基底，其中局部表面等离子体（LSP）的激发增强了邻近分析物分子的拉曼散射信号。本文综述了基于等离子体材料和纳米光子结构的Sers基底的研究进展。我们首先讨论基本的等离子体材料，如金属纳米粒子和纳米棒制备的传统的自下而上的化学合成过程。然后，我们回顾了合理设计的等离子体纳米结构创建的自上而下的方法或精细控制的合成与高密度的热点，以提供大的Sers增强因子（EF）。最后，我们讨论了通过等离子体纳米结构与其他纳米光子器件（例如光子晶体、生物纳米材料、导波系统、微流体和石墨烯）的集成来实现混合Sers基底的研究进展。
Surface-enhanced Raman scattering (SERS) has demonstrated single-molecule sensitivity and is becoming intensively investigated due to its significant potential in chemical and biomedical applications. SERS sensing is highly dependent on the substrate, where excitation of the localized surface plasmons (LSPs) enhances the Raman scattering signals of proximate analyte molecules. This paper reviews research progress of SERS substrates based on both plasmonic materials and nano-photonic structures. We first discuss basic plasmonic materials, such as metallic nanoparticles and nano-rods prepared by conventional bottom-up chemical synthesis processes. Then, we review rationally-designed plasmonic nano-structures created by top-down approaches or fine-controlled synthesis with high-density hot-spots to provide large SERS enhancement factors (EFs). Finally, we discuss the research progress of hybrid SERS substrates through the integration of plasmonic nano-structures with other nano-photonic devices, such as photonic crystals, bio-enabled nanomaterials, guided-wave systems, micro-fluidics and graphene.