Abstract
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 field enhancement and confinement is thus expected. Radiation losses are also investigated when the structure dimension becomes comparable to the wavelength.
Original language | English |
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Pages (from-to) | 2574-2579 |
Number of pages | 6 |
Journal | Nano Letters |
Volume | 10 |
Issue number | 7 |
DOIs | |
Publication status | Published - 14 Jul 2010 |
Externally published | Yes |
Keywords
- Broadband device
- Nanoparticles
- Plasmonics
- Transformation optics
ASJC Scopus subject areas
- Bioengineering
- General Chemistry
- General Materials Science
- Condensed Matter Physics
- Mechanical Engineering