期刊
NANO LETTERS
卷 11, 期 4, 页码 1838-1844出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl2008357
关键词
Metamaterial; asymmetric nanostructures; stamp-based pattern transfer; angle-dependent scattering; light-bending
类别
资金
- Center for Advanced Solar Photophysics
- U.S. Department of Energy, Office of Basic Energy Sciences [78506-001-09]
- Air Force Office of Scientific Research [F49620-03-C-0068]
- Office of Naval Research [N00014-10-1-0989]
- Department of Defense National Security Science and Engineering [N00244-09-1-0067]
- Robert A. Welch Foundation [C1220]
A nanocup, or semishell, is an asymmetric plasmonic Janus nanoparticle with electric and magnetic plasmon modes, the latter scatters light in a direction controlled by nanoparticle,orientation, making it the nanoscale analog of a parabolic antenna. Here we report a method for transferring nanocups from their growth substrate to oxide terminated substrates that precisely preserves their three-dimensional orientation, enabling their use as nanophotonic components. This enables us to selectively excite and probe the electric and magnetic plasmon modes of individual nanocups, showing how the scattered light depends on the direction of incoming light and the orientation of this nanoparticle antenna.
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