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Clusters of Closely Spaced Gold Nanoparticles as a Source of Two‐Photon Photoluminescence at Visible Wavelengths
Author(s) -
Ueno K.,
Juodkazis S.,
Mizeikis V.,
Sasaki K.,
Misawa H.
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200602680
Subject(s) - photoluminescence , materials science , nanostructure , optoelectronics , wavelength , nanometre , nanotechnology , nanoparticle , colloidal gold , composite material
Gold nanostructures consisting of nanoblocks separated by a few nanometer‐wide gaps were fabricated, and found to exhibit strong photoluminescence due to enhancement of the optical near‐field localized in the nanogaps. The fabricated structures demonstrate a nanostructured metallic material capable of efficient photoluminescence, whose efficiency can be adjusted by tailoring the nanogap width.