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The Role of Glass Structure in the Formation of Implanted Gold Nanoclusters for Enhanced Nonlinear Optical Properties

  • G.W. Arnold (a1), G. Battaglin (a2), A. Boscolo-Boscoletto (a3), P. Mazzoldi (a3) and C. Meneghini...

Abstract

Various silicate glasses (fused silica, soda-lime, Na- and K-borosilicates, lithia-alumina silicate, and Pyrex®) were implanted with 8 x 1015 285 keV Au/cm2. Colloid growth was monitored as a function of annealing and N implantation (2 x 1017 35 keV N/cm2). Annealing to 1040 °C for fused silica and to 600 °C for the other glasses resulted in Au aggregation and optical absorption. Radiation damage removal is associated with the fused silica annealing; the aggregation of Au at lower temperatures for the other glasses is expected because of the lower glass transition temperature. Phase-seption in the alkali-borosilicates may be important because of grain-boundary diffusion. N implantation did not significantly affect nanocluster growth.

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