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Appl. Sci. 2018, 8(11), 2319;

Evaluation of Effective Elastic Properties of Nitride NWs/Polymer Composite Materials Using Laser-Generated Surface Acoustic Waves

Institute for Mathematics, Mechanics and Informatics, Kuban State University, 350080 Krasnodar, Russia
CNRS, Institut des NanoSciences de Paris (INSP), Sorbonne Universités, CEDEX 05, 75252 Paris, France
Centre de Nanosciences et de Nanotechnologies, UMR 9001 CNRS, Univ. Paris Sud, Univ. Paris-Saclay, 8 Avenue de la Vauve, 91120 Palaiseau, France
Author to whom correspondence should be addressed.
Received: 16 October 2018 / Revised: 14 November 2018 / Accepted: 15 November 2018 / Published: 21 November 2018
(This article belongs to the Special Issue Laser Ultrasonics)
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In this paper we demonstrate a high potential of transient grating method to study the behavior of surface acoustic waves in nanowires-based composite structures. The investigation of dispersion curves is done by adjusting the calculated dispersion curves to the experimental results. The wave propagation is simulated using the explicit integral and asymptotic representations for laser-generated surface acoustic waves in layered anisotropic waveguides. The analysis of the behavior permits to determine all elastic constants and effective elastic moduli of constituent materials, which is important both for technological applications of these materials and for basic scientific studies of their physical properties. View Full-Text
Keywords: surface acoustic waves; GaN nanowires surface acoustic waves; GaN nanowires

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Glushkov, E.; Glushkova, N.; Bonello, B.; Lu, L.; Charron, E.; Gogneau, N.; Julien, F.; Tchernycheva, M.; Boyko, O. Evaluation of Effective Elastic Properties of Nitride NWs/Polymer Composite Materials Using Laser-Generated Surface Acoustic Waves. Appl. Sci. 2018, 8, 2319.

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