Probing gigahertz coherent acoustic phonons in TiO2 mesoporous thin films

Ultrahigh-frequency acoustic-phonon resonators usually require atomically flat interfaces to avoid phonon scattering and dephasing, leading to expensive fabrication processes, such as molecular beam epitaxy. Mesoporous thin films are based on inexpensive wet chemical fabrication techniques that lead...

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Bibliographic Details

Published in:	Photoacoustics
Main Authors:	E.R. Cardozo de Oliveira, C. Xiang, M. Esmann, N. Lopez Abdala, M.C. Fuertes, A. Bruchhausen, H. Pastoriza, B. Perrin, G.J.A.A. Soler-Illia, N.D. Lanzillotti-Kimura
Format:	Article
Language:	English
Published:	Elsevier 2023-04-01
Subjects:	Acoustic phonons Mesoporous thin films Picosecond ultrasonics Pump-probe Acoustics multilayers Acoustic resonators
Online Access:	http://www.sciencedirect.com/science/article/pii/S2213597923000253