表面等离激元——机理、应用与展望

【关键词】:表面等离激元;;局域表面等离激元;;传导的表面等离激元;;电磁场增强
【摘要】:等离激元光子学(plasmonics)的研究内容是金属纳米结构独特的光学性质及其应用.随着纳米科技的进步,等离激元光子学已经迅速发展成为一门新兴学科,在生物、化学、能源、信息等领域具有重要的应用前景.文章主要介绍表面等离激元(surface plasmons,SPs)的一些基本物理性质,包括局域的表面等离激元(localized surface plas-mon,LSP)和传导的表面等离激元(propagating surface plasmon polariton,SPP),文章还介绍了表面等离激元的几个重要的应用方向,例如生物/化学传感器、表面等离激元激光、光开关器件以及表面等离激元光逻辑运算,等等.
With the fast development of nanoscience and nanotechnology, research on the unique optical properties of metal nanostructures and related applications has rapidly grown into an important branch discipline of nano-optics, known as plasmonics, with abundant content and extensive applications in many fields such as biology, chemistry, renewable energy, and information technology. This article introduces some basic concepts of surface plasmons, including localized surface plasmons and propagating surface plasmon polaritons. An overview of various important applications in bio/chemo sensing, nanolasers, ultrafast optical switches, surface plasmon-based logic, and so forth is presented.