Detection and size determination of Ag nanoclusters in ion‐exchanged soda‐lime glasses by waveguided Raman spectroscopy
作者:
M. Ferrari,
F. Gonella,
M. Montagna,
C. Tosello,
期刊:
Journal of Applied Physics
(AIP Available online 1996)
卷期:
Volume 79,
issue 4
页码: 2055-2059
ISSN:0021-8979
年代: 1996
DOI:10.1063/1.361060
出版商: AIP
数据来源: AIP
摘要:
Waveguided Raman measurements have been performed in order to detect the presence of Ag nanoclusters in soda‐lime glass waveguides obtained by ion exchange. By subtracting a strong broadband luminescence and the Raman contribution of the glass matrix, a low frequency Raman peak is resolved. The peak is ascribed to surface acoustic vibrations of silver clusters. The involved modes are the quadrupolar spheroidal ones. The size distribution of the Ag clusters is deduced from the energy and the linewidth of the peak. Silver particles have small dimensions with an upper size limit of about 1.5 nm. This result is in good agreement with recent transmission electron microscopy measurements. ©1996 American Institute of Physics.
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