Design parameters for a nano-optical Yagi-Uda antenna
Design parameters for a nano-optical Yagi-Uda antenna
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DOI：
10.1088/1367-2630/9/7/217
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发表时间：
2007-07-06
影响因子：
3.3
通讯作者：
Kadoya, Yutaka
中科院分区：
文献类型：
--
作者：
Hofmann, Holger F.;Kosako, Terukazu;Kadoya, Yutaka
我们研究了使用由有限纳米粒子线性阵列组成的八木宇田天线引导光发射的可能性。确定了表征纳米颗粒等离子体共振的相关参数，并相应地制定了阵列元件之间的相互作用。结果表明，即使纳米颗粒中存在不可忽略的吸收损失，也可以观察到光发射的方向性。我们得出的结论是，有限的金纳米棒阵列可能足以实现纳米光学八木宇田天线。
We investigate the possibility of directing optical emissions using a Yagi-Uda antenna composed of a finite linear array of nanoparticles. The relevant parameters characterizing the plasma resonances of the nanoparticles are identified and the interaction between the array elements is formulated accordingly. It is shown that the directionality of the optical emission can be observed even in the presence of non-negligible absorption losses in the nanoparticles. We conclude that a finite array of gold nanorods may be sufficient for the realization of a working nano-optical Yagi-Uda antenna.