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Radiation Induced Nucleation of Nanoparticles in Silica

Published online by Cambridge University Press:  15 February 2011

D. Ila ,
E. K. Williams ,
D. B. Poker ,
D. K. Hensley ,
C. Klatt  and
S. Kalbitzer
D. Ila
Affiliation:
Center for Irradiation of Materials, Alabama A&M University, Normal, AL 35762-1447, USA
E. K. Williams*
Affiliation:
Center for Irradiation of Materials, Alabama A&M University, Normal, AL 35762-1447, USA
D. B. Poker*
Affiliation:
Center for Irradiation of Materials, Alabama A&M University, Normal, AL 35762-1447, USA
D. K. Hensley
Affiliation:
Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
C. Klatt
Affiliation:
Max Planck-Institut für Kernphysik, Postfach 10398 D-69029 Heidelberg, Germany
S. Kalbitzer
Affiliation:
Max Planck-Institut für Kernphysik, Postfach 10398 D-69029 Heidelberg, Germany
*
Corresponding author: Tel (256)851-5866, FAX (256)851-5868, e-mail [email protected]
Corresponding author: Tel (256)851-5866, FAX (256)851-5868, e-mail [email protected]
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Abstract

In this paper, we present the results of our investigation of producing nanoclusters of gold in silica at fluences of two orders of magnitude less than what is traditionally used This is accomplished by implanting 2.0 MeV Au into silica followed by MeV bombardment by MeV Si ions. The size of the nanoclusters, ranging from one to 10 nanometers, is controlled by the implantation dose and by the total electronic energy deposited by each post bombarding ion in the implanted layer. By both indirect measurement methods, such as optical absorption spectrophotometry (non-destructive), and direct methods, such as transmission electron microscopy (destructive) we show how and at what concentrations gold nucleates to form nanoparticles by radiation-enhanced nucleation at a dose below that needed for spontaneous nanoparticle formation.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 540: Symposium N / Microstructural Processes in Irradiated Materials , 1998 , 147
Copyright
Copyright © Materials Research Society 1999

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