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Pulsed laser characterization of multicomponent polymer acoustic and mechanical properties in the sub-GHz regime

Author(s):
G. Saini, T. Pezeril, D.H. Torchinsky, J. Yoon, S.E. Kooi, E.L. Thomas, K.A. Nelson

We investigated the acoustic properties in the sub-GHz frequency regime of a multilayer system comprising alternating 100-nm scale TiO2/poly(methyl methacrylate) (PMMA) layers through a laser photoacoustic method, impulsive stimulated thermal scattering (ISTS). The acoustic dispersion curves were determined, and the mechanical properties were extracted from the experimental results.

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Volume: 22
#: 3
Pages: 719-723
DOI: 10.1557/JMR.2007.0081