Detection and size determination of Ag nanoclusters in ion-exchanged soda-lime glasses by waveguided Raman spectroscopy

Journal of Applied Physics - Tập 79 Số 4 - Trang 2055-2059 - 1996
Maurizio Ferrari1, F. Gonella2, M. Montagna3, C. Tosello3
1Centro C.N.R. di Fisica degli stati aggregati e impianto ionico, I-38050 Povo, Trento, Italy
2Dipartimento di Fisica, Istituto Nazionale di Fisica della Materia, Universitá di Padova, Via Marzolo 8, I-35131 Padova, Italy
3Dipartimento di Fisica, Istituto Nazionale di Fisica della Materia, Universitá di Trento, I-38050 Povo, Trento, Italy

Tóm tắt

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.

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Thông tin xuất bản

Journal of Applied Physics

Tập 79 Số 4

2055-2059

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