| Literature DB >> 23687561 |
Sean T Sivapalan1, Jarrett H Vella, Timothy K Yang, Matthew J Dalton, Joy E Haley, Thomas M Cooper, Augustine M Urbas, Loon-Seng Tan, Catherine J Murphy.
Abstract
Surface-plasmon-initiated interference effects of polyelectrolyte-coated gold nanorods on the two-photon absorption of an organic chromophore were investigated. With polyelectrolyte bearing gold nanorods of 2,4,6 and 8 layers, the role of the plasmonic fields as function of distance on such effects was examined. An unusual distance dependence was found: enhancements in the two-photon cross-section were at a minimum at an intermediate distance, then rose again at a further distance. The observed values of enhancement were compared to theoretical predictions using finite element analysis and showed good agreementdue to constructive and destructive interference effects.Entities:
Keywords: Plasmonics; two-photon absorption
Year: 2013 PMID: 23687561 PMCID: PMC3653337 DOI: 10.1021/jz4000774
Source DB: PubMed Journal: J Phys Chem Lett ISSN: 1948-7185 Impact factor: 6.475