期刊
ACS NANO
卷 5, 期 10, 页码 8223-8229出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn2029007
关键词
dark plasmon mode; nanoantenna array; gold nanocube; plasmon coupling
类别
资金
- National Science Council in Taiwan [NSC-99-2120-M-007-004]
- MEXT, Japan [470, 19049007]
- Grants-in-Aid for Scientific Research [19049007] Funding Source: KAKEN
Plasmonic nanoantenna arrays hold great promise for diffraction-unlimited light localization, confinement, and transport. Here, we report on linear plasmonic nanoantenna arrays composed of colloidal gold nanocubes precisely assembled using a nanomanipulation technique. In particular, we show the direct evidence of dark propagating modes In the plasmon coupling regime, allowing for transport of guided plasmon waves without far-field radiation losses. Additionally, we demonstrate the possibility of plasmon dispersion engineering in coupled gold nanocube chains. By assembling a nanocube chain with two sections of coupled nanocubes of different intercube separations, we are able to produce the effect of a band-pass nanofilter.
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