Synthesis and nonlinear optical characterization of nanostructured gold/polymer composites and suspensions

K. E. Gonsalves, G. Carlson, X. Chen, S. K. Gayen, R. Perez, M. Jose-Yacaman

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Nanometric gold particles were synthesized by a liquid/liquid phase-transfer reaction. Composites of these particles were prepared by free-radical polymerization of suspensions of the particles in styrene and methyl methacrylate monomer. Concentrations of 1.0, 1.3, and 4.4 mg/ml were prepared, with no noticeable agglomeration of particles during processing. These composites and toluene suspensions (0.18 mg/ml) showed a linear absorption peak at 530 nm, which is characteristic of nanosized gold. High-resolution electron microscopy measurement showed that the particle diameters varied from 5 to 10 nm. Degenerate four-wave mixing experiments at 532 nm yielded, on 10-micron films, a maximum value of 1.0 x 10-10 e.s.u. for the third-order nonlinear optical susceptibility. The toluene suspension had a susceptibility of 7.7 x 10-12 e.s.u.

Original languageEnglish (US)
Pages (from-to)293-303
Number of pages11
JournalNanostructured Materials
Volume7
Issue number3
DOIs
StatePublished - 1996
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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