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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 2, Iss. 10 — Oct. 31, 2007

Influence of stabilizing agents on the nonlinear susceptibility of silver nanoparticles

Luis A. Gómez, Cid B. de Araújo, A. M. Brito Silva, and André Galembeck  »View Author Affiliations

JOSA B, Vol. 24, Issue 9, pp. 2136-2140 (2007)

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The nonlinear (NL) optical properties of silver nanoparticles (NPs) colloids stabilized using sodium citrate, poly(N-vinylpyrrolidone), and polyvinyl alcohol in aqueous solutions were investigated. The characterization of the colloids was made through linear absorption, transmission electron microscopy, and the Z-scan technique at 532 nm . Changes in the NL optical response of the samples were observed due to different molecules adsorbed on the NPs’ surface. The third-order nonlinearity of the silver NPs with different stabilizers is discussed, and the results are associated with the scattering parameter A, which is related to the shift and broadening of the NPs’ surface plasmon resonance. The NL susceptibility of the NPs was determined for each colloid, and from the results the influence of the stabilizing agents on the NPs’ susceptibility is clear.

© 2007 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(190.4400) Nonlinear optics : Nonlinear optics, materials
(240.6680) Optics at surfaces : Surface plasmons
(300.6420) Spectroscopy : Spectroscopy, nonlinear

ToC Category:
Nonlinear Optics

Original Manuscript: November 16, 2006
Revised Manuscript: March 26, 2007
Manuscript Accepted: May 17, 2007
Published: August 6, 2007

Virtual Issues
Vol. 2, Iss. 10 Virtual Journal for Biomedical Optics

Luis A. Gómez, Cid B. de Araújo, A. M. Brito Silva, and André Galembeck, "Influence of stabilizing agents on the nonlinear susceptibility of silver nanoparticles," J. Opt. Soc. Am. B 24, 2136-2140 (2007)

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