期刊
NANO LETTERS
卷 10, 期 7, 页码 2574-2579出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl101235d
关键词
Plasmonics; nanoparticles; broadband device; transformation optics
类别
资金
- European Community [213390]
- U K Engineering and Physical Sciences Research Council (EPSRC)
- Engineering and Physical Sciences Research Council [EP/H000917/1, EP/D063329/1, EP/H000917/2] Funding Source: researchfish
- EPSRC [EP/D063329/1, EP/H000917/2, EP/H000917/1] Funding Source: UKRI
On the basis of conformal transformation, a general strategy is proposed to design plasmonic nanostructures capable of an efficient harvesting of light over a broadband spectrum The surface plasmon modes propagate toward the singularity of these structures where the group velocity vanishes and energy accumulates A considerable held enhancement and confinement is thus expected Radiation losses are also investigated when the structure dimension becomes comparable to the wavelength
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