Fano-like Interference in Self-Assembled Plasmonic Quadrumer Clusters

被引：340

作者：

Fan, Jonathan A. ^{[1
]}

Bao, Kui ^{[2
]}

Wu, Chihhui ^{[3
]}

Bao, Jiming ^{[4
]}

Bardhan, Rizia ^{[5
]}

Halas, Naomi J. ^{[2
,5
]}

Manoharan, Vinothan N. ^{[1
,6
]}

Shvets, Gennady ^{[3
]}

Nordlander, Peter ^{[2
]}

Capasso, Federico ^{[1
]}

机构：

[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA

[2] Rice Univ, Dept Phys & Astron, Houston, TX 77005 USA

[3] Univ Texas Austin, Dept Phys, Austin, TX 78712 USA

[4] Univ Houston, Dept Elect & Comp Engn, Houston, TX 77204 USA

[5] Rice Univ, Dept Chem, Houston, TX 77251 USA

[6] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

来源：

NANO LETTERS | 2010年 / 10卷 / 11期

基金：

美国国家科学基金会;

关键词：

Fano resonance; plasmon; coupling; self-assembly; nanoshell; nanocluster; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; SYMMETRY-BREAKING; RESONANCES; ANALOG; MODES;

D O I：

10.1021/nl1029732

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Assemblies of strongly interacting metallic nanoparticles are the basis for plasmonic nanostructure engineering. We demonstrate that clusters of four identical spherical particles self-assembled into a close-packed asymmetric quadrumer support strong Fano-like interference. This feature is highly sensitive to the polarization of the incident electric held due to orientation-dependent coupling between particles in the cluster. This structure demonstrates how careful design of self-assembled colloidal systems can lead to the creation of new plasmonic modes and the enabling of interference effects in plasmonic systems.

引用

页码：4680 / 4685

页数：6

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