中文摘要：

表面等离激元光子学是研究光和金属表面自由电子耦合所引起金属表面电荷密度振荡的性质及其应用的一门学科．金属中的自由电子在入射光的作用下产生集体振荡．在垂直表面的方向上强度呈指数衰减，使得亚波长金属结构中光场高度局域．由于独特的光学性质，使得其具有广泛的应用，其中两个重要的分支为：表面增强光谱和表面等离激元共振传感器．表面增强光谱传感器是利用纳米结构的巨大表面增强效应来直接探测表面分子，表面等离激元共振传感器通过检测目标分子对等离激元共振峰的影响进行定性定量检测．这两种优势互补的传感器技术都可以达到单细胞甚至单分子的检测水平．本文将论述表面等离激元光子学的原理、表面增强光谱和表面增强光谱传感器研究领域的国内外最新进展和发展趋势．

英文摘要：

Because of its unique optical properties, localization and large electromagnetic enhancement, localized surface plasmon resonance spectroscopy is a powerful technique for chemical and biological sensing experiments. The largest contributor to these results from the electric field enhancement that occurs in the vicinity of small, interacting metal particles that are illuminated with light resonant or near resonant with the localized surface-plasmon frequency of the metal structure. This review mainly focuses on surface-enhanced spectroscopy and surface plasmon resonance sensor.