Confined plasmons in metallic nanocavities
Confined plasmons in metallic nanocavities
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DOI：
10.1103/physrevlett.87.176801
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发表时间：
2001-10-22
影响因子：
8.6
通讯作者：
Whittaker, DM
中科院分区：
文献类型：
--
作者：
Coyle, S;Netti, MC;Whittaker, DM
通过自组装乳胶模板的电化学沉积，我们研究了利用纳米尺度的“失蜡”技术图案化的金表面的性质。形成的多孔膜中的近球形金纳米腔支持局域表面等离子激元，这些等离子体与入射光强烈耦合，在反射率测量中表现为尖锐的光谱特征。通过控制纳米腔的直径和高度，共振的能量可以很容易地从紫外线到近红外进行调节。这些特征的能量与完美球形空洞的Mie共振很好地吻合。
We investigate the properties of gold surfaces patterned using a nanoscale "lost wax" technique by electrochemical deposition through a self-assembled latex template. Near-spherical gold nanocavities within the resulting porous films support localized surface plasmons which couple strongly to incident light, appearing as sharp spectral features in reflectivity measurements. The energy of the resonances is easily tunable from ultraviolet to near infrared by controlling the diameter and height of the nanocavities. The energies of these features agree well with the Mie resonances of a perfect spherical void.