CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

A bimetallic nanoantenna for directional colour routing

Timur Shegai (Institutionen för teknisk fysik, Bionanofotonik) ; Si Chen (Institutionen för teknisk fysik, Bionanofotonik) ; Vladimir D. Miljkovic (Institutionen för teknisk fysik, Bionanofotonik) ; Gülis Zengin (Institutionen för teknisk fysik, Bionanofotonik) ; Peter Johansson (Institutionen för teknisk fysik, Bionanofotonik) ; Mikael Käll (Institutionen för teknisk fysik, Bionanofotonik)
Nature Communications (2041-1723). Vol. 2 (2011),
[Artikel, refereegranskad vetenskaplig]

Recent progress in nanophotonics includes demonstrations of meta-materials displaying negative refraction at optical frequencies, directional single photon sources, plasmonic analogies of electromagnetically induced transparency and spectacular Fano resonances. The physics behind these intriguing effects is to a large extent governed by the same single parameter-optical phase. Here we describe a nanophotonic structure built from pairs of closely spaced gold and silver disks that show phase accumulation through material-dependent plasmon resonances. The bimetallic dimers show exotic optical properties, in particular scattering of red and blue light in opposite directions, in spite of being as compact as similar to lambda(3)/100. These spectral and spatial photon-sorting nanodevices can be fabricated on a wafer scale and offer a versatile platform for manipulating optical response through polarization, choice of materials and geometrical parameters, thereby opening possibilities for a wide range of practical applications.

Nyckelord: gold nanosandwiches, visible frequencies, field enhancement, nanoparticle, emission, light, metamaterials, film



Denna post skapades 2011-12-01. Senast ändrad 2015-12-17.
CPL Pubid: 149387

 

Läs direkt!

Lokal fulltext (fritt tillgänglig)

Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för teknisk fysik, Bionanofotonik (2007-2015)

Ämnesområden

Teknisk fysik

Chalmers infrastruktur