Surface plasmon (SP) is electron density oscillation wave that propagates at the metal-dielectric interface .When the oscillation frequency matches with the incident light frequency ,surface plasmon resonance effects are induced .It leads to strong light extinction and field enhancement near the metal structures . SP resonance effect can be applied to SP imaging , SP waveguide ,biology sensing and spectral enhancement .The research progress of metal nanostructure enhanced fluorescence was reviewed .Firstly ,the mechanism of metal enhanced fluorescence and the factors influencing fluorescence enhancement were introduced .Then ,the research progress in fluorescence enhancement using different metal structures was reviewed .Finally ,some new applications of fluorescence enhancement such as food testing ,environmental testing ,imaging optics ,optoelectronic devices ,fluorescence upconversion were introduced .%金属表面等离子体(surface plasmon)是金属与介质界面处传播的电荷振荡密度波.当振荡频率与激发光频率相匹配时将产生金属表面等离子体共振,从而能够在金属结构附近产生强烈的消光和近场增强效应,该效应在表面等离子共振成像、表面等离子体波导、生物传感、光谱增强等方面有着重要的应用前景.本文综述了金属结构的表面等离子共振效应在增强荧光光谱方面的研究进展.论文首先介绍了金属表面等离子体增强荧光的机理以及影响荧光增强效果的因素;其次,从用于荧光增强的各类金属纳米结构的角度分别综述了荧光增强研究的最新进展;最后,介绍了荧光增强在食品检测、环境监测、光学成像、光电器件、荧光上转换等领域的最新应用情况.
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