Fanoshells: Nanoparticles with Built-in Fano Resonances
Fanoshells: Nanoparticles with Built-in Fano Resonances
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DOI：
10.1021/nl1016392
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发表时间：
2010-07-01
期刊：
影响因子：
10.8
通讯作者：
Halas, Naomi J.
中科院分区：
文献类型：
--
作者：
Mukherjee, Shaunak;Sobhani, Heidar;Halas, Naomi J.
一种由介电(SiO_2)和金属(Au)壳层围绕固体Au纳米粒子核组成的纳米粒子，其超辐射和亚辐射等离子体激元模式在能量上重叠，导致其光学响应中的Fano共振。单粒子暗场显微光谱学揭示了该纳米粒子在非对称核周围合成产生额外Fano共振的结构。质量-弹簧耦合振子模型很好地描述了该纳米粒子的等离子体相互作用和由此产生的光学响应。
A nanoparticle consisting of a dielectric (SiO2) and metallic (Au) shell layer surrounding a solid Au nanoparticle core can be designed with its superradiant and subradiant plasmon modes overlapping in energy, resulting in a Fano resonance in its optical response Synthesis of this nanoparticle around an asymmetric core yields a structure that possesses additional Fano resonances as revealed by single particle dark field microspectroscopy A mass-and-spring coupled oscillator model provides an excellent description of the plasmon interactions and resultant optical response of this nanoparticle