表面等离激元——机理、应用与展望

Surface plasmons——mechanisms, applications and perspectives

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, renewab｜e 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.