期刊
NANO LETTERS
卷 12, 期 10, 页码 5318-5324出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl302650t
关键词
Plasmonics; templated self-assembly; Fano resonance; heptamer; magnetic dipole; nanoshell
类别
资金
- Robert A. Welch foundation [C-1222, E-1728]
- U.S. Department of Defense NSEFF program [N00244-09-1-0067]
- Office of Naval Research [N00014-10-1-0989]
- National Science Foundation [DMR-0907336, ECCS-1240510]
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1150584] Funding Source: National Science Foundation
Plasmonic nanoparticle assemblies are a materials platform in which optical modes, resonant frequencies, and near-field intensities can be specified by the number and position of nanoparticles in a cluster. A current challenge is to achieve clusters with higher yields and new types of shapes. In this Letter, we show that a broad range of plasmonic nanoshell nanoclusters can be assembled onto a lithographically defined elastomeric substrate with relatively high yields using templated assembly. We assemble and measure the optical properties of three cluster types: Fano-resonant heptamers, linear chains, and rings of nanoparticles. The yield of heptamer clusters is measured to be over 30%. The assembly of plasmonic nanoclusters on an elastomer paves the way for new classes of plasmonic nanocircuits and colloidal metamaterials that can be transfer-printed onto various substrate media.
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