Controlled plasmon resonance in closed metal/insulator/metal nanocavities
Controlled plasmon resonance in closed metal/insulator/metal nanocavities
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DOI：
10.1063/1.2397037
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发表时间：
2006-11-20
影响因子：
4
通讯作者：
Kurokawa, Yoichi
中科院分区：
文献类型：
--
作者：
Miyazaki, Hideki T.;Kurokawa, Yoichi
证明了纳米级闭合光腔中的受控等离子激元共振。纳米薄片等离子体激元腔是一种有限长度的金属/绝缘体/金属波导。它的最低阶横磁导模在端部被反射，表现出法布里-珀罗共振。在这项研究中，一端被倾斜蒸发的Au膜封闭，并观察到所谓的风琴管共振作为反射凹陷。由于这种闭合结构提供了更高的场增强和更高的散射光检测效率，它们很有希望成为拉曼增强的基本结构。(C)2006年美国物理研究所。
The controlled plasmon resonance in nanometer-sized optical cavities with a closed end has been demonstrated. A nanosheet plasmon cavity is a metal/insulator/metal waveguide with a finite length. Its lowest-order transverse-magnetic guided mode is reflected at the ends and exhibits the Fabry-Perot resonance. In this study, one of the ends was closed by an obliquely evaporated Au film, and the so-called organ pipe resonances were observed as reflection dips. Since such closed configurations offer a higher field enhancement and higher detection efficiency of the scattered light, they are promising as fundamental structures for Raman enhancement. (c) 2006 American Institute of Physics.