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Optical Absorption of Plasmonic Nanoparticles in Presence of a Local Interband Transition

Tavakol Pakizeh (Institutionen för teknisk fysik, Bionanofotonik)
Journal of Physical Chemistry C (1932-7447). Vol. 115 (2011), 44, p. 21826-21831.
[Artikel, refereegranskad vetenskaplig]

The influences of a local interband transition on optical absorptions of plasmonic nanoparticles are investigated It is found that the optical absorption associated with a local interband transition is remarkably enhanced because of the presence of a localized surface plasmon resonance on the basis of the quasistatic theory, Mie calculations, and the classical models, the electromagnetic interaction of plasmon- and interband-dipole is studied. It is shown that two modes with different characters are generated because of the strong inherent interaction. As a consequence of this interaction; the two modes are repulsed, and an avoided,crossing zone is constructed where the particle plasmon energy coincides with the energy of a local interband transition. The energies of the two modes are interchanged as the crossing zone traversed.

Nyckelord: gold, nanosandwiches, nanostructures, mechanisms, resonance, platinum, metals

Denna post skapades 2011-12-09.
CPL Pubid: 149882


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Institutioner (Chalmers)

Institutionen för teknisk fysik, Bionanofotonik (2007-2015)


Teknisk fysik

Chalmers infrastruktur