Effects of Symmetry Breaking and Conductive Contact on the Plasmon Coupling in Gold Nanorod Dimers

ACS Nano ◽  
2010 ◽  
Vol 4 (8) ◽  
pp. 4657-4666 ◽  
Author(s):  
Liane S. Slaughter ◽  
Yanpeng Wu ◽  
Britain A. Willingham ◽  
Peter Nordlander ◽  
Stephan Link
Keyword(s):  
Symmetry Breaking ◽  
Gold Nanorod ◽  
Plasmon Coupling

Plasmon Coupling in Layer-by-Layer Assembled Gold Nanorod Films

Langmuir ◽  
2007 ◽  
Vol 23 (8) ◽  
pp. 4606-4611 ◽  
Author(s):  
Stéphanie Vial ◽  
Isabel Pastoriza-Santos ◽  
Jorge Pérez-Juste ◽  
Luis M. Liz-Marzán
Keyword(s):  
Gold Nanorod ◽  
Plasmon Coupling ◽  
Layer By Layer

Nanodisk-Induced Modification of Plasmon Coupling and Appearance of Fano Resonance Without Symmetry Breaking in Concentric Ag Nanoring-Nanodisk

Plasmonics ◽  
2016 ◽  
Vol 12 (3) ◽  
pp. 889-898 ◽  
Author(s):  
Zao Yi ◽  
Gao Niu ◽  
Xin Ye ◽  
Jiangshan Luo ◽  
Xibo Li ◽  
...  
Keyword(s):  
Symmetry Breaking ◽  
Fano Resonance ◽  
Plasmon Coupling

Plasmon Coupling Between Gold Nanorod and Adsorbed Organic Molecule

2009 ◽  
Vol 9 (9) ◽  
pp. 5198-5207 ◽  
Author(s):  
Goutam Chandra ◽  
Animesh Kumar Ojha ◽  
Shruti Puri ◽  
Anushree Roy
Keyword(s):  
Organic Molecule ◽  
Gold Nanorod ◽  
Plasmon Coupling

Evidence Of Plasmon Coupling Between Gold Nanorod and Benzonitrile Molecule

2010 ◽  
Author(s):  
Anushree Roy ◽  
Goutam Kumar Chandra ◽  
Goutam Mukhopadhyay ◽  
P. M. Champion ◽  
L. D. Ziegler
Keyword(s):  
Gold Nanorod ◽  
Plasmon Coupling

Heat-enhanced symmetry breaking in dynamic gold nanorod oligomers: the importance of interface control

Nanoscale ◽  
2016 ◽  
Vol 8 (19) ◽  
pp. 10030-10034 ◽  
Author(s):  
Jiao Yan ◽  
Shuai Hou ◽  
Yinglu Ji ◽  
Xiaochun Wu
Keyword(s):  
Symmetry Breaking ◽  
Gold Nanorod ◽  
Interface Control

scholarly journals Gold Nanorod Assemblies: The Roles of Hot-Spot Positioning and Anisotropy in Plasmon Coupling and SERS

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 942 ◽  
Author(s):  
Priyanka Dey ◽  
Verena Baumann ◽  
Jessica Rodríguez-Fernández
Keyword(s):  
Hot Spots ◽  
Hot Spot ◽  
Critical Role ◽  
Gold Nanorod ◽  
Plasmon Coupling ◽  
Surface Enhanced ◽  
Sybr Gold ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Plasmon-coupled colloidal nanoassemblies with carefully sculpted “hot-spots” and intense surface-enhanced Raman scattering (SERS) are in high demand as photostable and sensitive plasmonic nano-, bio-, and chemosensors. When maximizing SERS signals, it is particularly challenging to control the hot-spot density, precisely position the hot-spots to intensify the plasmon coupling, and introduce the SERS molecule in those intense hot-spots. Here, we investigated the importance of these factors in nanoassemblies made of a gold nanorod (AuNR) core and spherical nanoparticle (AuNP) satellites with ssDNA oligomer linkers. Hot-spot positioning at the NR tips was made possible by selectively burying the ssDNA in the lateral facets via controlled Ag overgrowth while retaining their hybridization and assembly potential at the tips. This strategy, with slight alterations, allowed us to form nanoassemblies that only contained satellites at the NR tips, i.e., directional anisotropic nanoassemblies; or satellites randomly positioned around the NR, i.e., nondirectional nanoassemblies. Directional nanoassemblies featured strong plasmon coupling as compared to nondirectional ones, as a result of strategically placing the hot-spots at the most intense electric field position of the AuNR, i.e., retaining the inherent plasmon anisotropy. Furthermore, as the dsDNA was located in these anisotropic hot-spots, this allowed for the tag-free detection down to ~10 dsDNA and a dramatic SERS enhancement of ~1.6 × 108 for the SERS tag SYBR gold, which specifically intercalates into the dsDNA. This dramatic SERS performance was made possible by manipulating the anisotropy of the nanoassemblies, which allowed us to emphasize the critical role of hot-spot positioning and SERS molecule positioning in nanoassemblies.

Gold Nanorod–pNIPAM Hybrids with Reversible Plasmon Coupling: Synthesis, Modeling, and SERS Properties

2015 ◽  
Vol 7 (23) ◽  
pp. 12530-12538 ◽  
Author(s):  
Cristina Fernández-López ◽  
Lakshminarayana Polavarapu ◽  
Diego M. Solís ◽  
José M. Taboada ◽  
Fernando Obelleiro ◽  
...  
Keyword(s):  
Gold Nanorod ◽  
Plasmon Coupling

Angle- and Energy-Resolved Plasmon Coupling in Gold Nanorod Dimers

ACS Nano ◽  
2010 ◽  
Vol 4 (6) ◽  
pp. 3053-3062 ◽  
Author(s):  
Lei Shao ◽  
Kat Choi Woo ◽  
Huanjun Chen ◽  
Zhao Jin ◽  
Jianfang Wang ◽  
...  
Keyword(s):  
Gold Nanorod ◽  
Plasmon Coupling
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