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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 6 — Apr. 8, 2010

Tuning the aspect ratio of silver nanospheroids embedded in silica

V. Rodríguez-Iglesias, O. Peña-Rodríguez, H. G. Silva-Pereyra, L. Rodríguez-Fernández, J. C. Cheang-Wong, A. Crespo-Sosa, J. A. Reyes-Esqueda, and A. Oliver  »View Author Affiliations


Optics Letters, Vol. 35, Issue 5, pp. 703-705 (2010)
http://dx.doi.org/10.1364/OL.35.000703


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Abstract

A method is proposed to control the aspect ratio ( ε ) of elongated nanoparticles obtained by ion implantation in a transparent matrix. The procedure was tested for Ag spheroids in silica and we could accurately change ε in the range from the maximum value obtained by the ion implantation (around 3.0 in this case) to 1.0 (spherical shape). The values of ε were determined in several steps from optical extinction spectroscopy measurements, by fitting the modification and splitting of the surface plasmon resonance peak, using the T-matrix method. In the initial (maximum deformation) and final (undeformed) states, transmission electron microscopy images were obtained, showing a good agreement with the T-matrix results in both cases.

© 2010 Optical Society of America

OCIS Codes
(160.3900) Materials : Metals
(160.4760) Materials : Optical properties
(290.2200) Scattering : Extinction
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: November 16, 2009
Revised Manuscript: December 23, 2009
Manuscript Accepted: January 11, 2010
Published: February 25, 2010

Virtual Issues
Vol. 5, Iss. 6 Virtual Journal for Biomedical Optics

Citation
V. Rodríguez-Iglesias, O. Peña-Rodríguez, H. G. Silva-Pereyra, L. Rodríguez-Fernández, J. C. Cheang-Wong, A. Crespo-Sosa, J. A. Reyes-Esqueda, and A. Oliver, "Tuning the aspect ratio of silver nanospheroids embedded in silica," Opt. Lett. 35, 703-705 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-35-5-703


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