Strongly Coupled Plasmonic Modes on Macroscopic Areas via Template-Assisted Colloidal Self-Assembly

被引：171

作者：

Hanske, Christoph ^{[1
]}

Tebbe, Moritz ^{[1
]}

Kuttner, Christian ^{[1
]}

Bieber, Vera ^{[1
]}

Tsukruk, Vladimir V. ^{[2
]}

Chanana, Munish ^{[1
,3
]}

Koenig, Tobias A. F. ^{[1
,2
]}

Fery, Andreas ^{[1
]}

机构：

[1] Univ Bayreuth, D-95440 Bayreuth, Germany

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[3] ETH, Inst Bldg Mat IfB, CH-8093 Zurich, Switzerland

来源：

NANO LETTERS | 2014年 / 14卷 / 12期

基金：

欧洲研究理事会;

关键词：

gold nanoparticle chains; protein coating; strong plasmon coupling; superradiant and subradiant modes; electromagnetic simulations; ENHANCED RAMAN-SCATTERING; ELECTROMAGNETIC ENERGY-TRANSPORT; GOLD NANORODS; NANOPARTICLE CHAINS; OPTICAL-PROPERTIES; WAVE-GUIDES; HOT-SPOTS; ARRAYS; SERS; NANOSTRUCTURES;

D O I：

10.1021/nl502776s

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present ensembles of surface-ordered nanoparticle arrangements, which are formed by template-assisted self-assembly of monodisperse, protein-coated gold nanoparticles in wrinkle templates. Centimeter-squared areas of highly regular, linear assemblies with tunable line width are fabricated and their extinction cross sections can be characterized by conventional UV/vis/NIR spectroscopy. Modeling based on electrodynamic simulations shows a clear signature of strong plasmonic coupling with an interparticle spacing of 1-2 nm. We find evidence for well-defined plasmonic modes of quasi-infinite chains, such as resonance splitting and multiple radiant modes. Beyond elementary simulations on the individual chain level, we introduce an advanced model, which considers the chain length distribution as well as disorder. The step toward macroscopic sample areas not only opens perspectives for a range of applications in sensing, plasmonic light harvesting, surface enhanced spectroscopy, and information technology but also eases the investigation of hybridization and metamaterial effects fundamentally.

引用

页码：6863 / 6871

页数：9

共 59 条

[1] Macroscale Plasmonic Substrates for Highly Sensitive Surface-Enhanced Raman Scattering [J].