摘要
在可见/红外频段,纳米光学天线一般是指金属(金、银、铜等)纳米颗粒及其相同结构的不同组合构成,这些金属纳米结构在特定波长光激发下产生局域表面等离子体共振(LSPR),因此在纳米尺寸上能对可见/红外场约束、场增强或重定向等功能。对纳米光学天线的调控分为通过改变天线设计的被动控制和通过改变介质的介电常数主动控制模式。纳米光学天线是近年来纳米光学方向新兴的前沿课题,有望广泛应用于纳米光学、化学、生物医学等领域。主要介绍纳米光学天线的主要功能、调控模式及其在生物医学中的应用。
In the visible and infrared regimes, optical nano-antennas are usually referred to metal nanoparticles and arrangement of the same, having distinct properties based on the localized surface plasmon resonance （LSPR）. Optical antennas are generally characterized by their capabilities to strongly confine light, to enhance an optical response and even to modify emission directivity. On the basis of the principles of the surface plasmon, the charactistics of nano-antennas can be tuned by passive mode through changing design paramaters and active mode through an externally control. Optical nano-antennas have promising applications in the fields ranging from nanooptics, chemistry to biomedicine. This paper focuses on its most important functionalties and controlling modes, ended by a brief introduction in the applications in biomedicine.
出处
《激光与光电子学进展》
CSCD
北大核心
2012年第6期40-47,共8页
Laser & Optoelectronics Progress
基金
国家973计划(2007CB613306)资助课题
