Author: ["Hefei Hu","A. Strybulevych","J. H. Page","S. E. Skipetrov","B. A. van Tiggelen"]
CITE.CC academic search helps you expand the influence of your papers.
Abstract
A systematic study of the propagation of ultrasound through a random network of aluminium beads provides the first demonstration of the Anderson localization of classical waves in a 3D system. After exactly half a century of Anderson localization1, the subject is more alive than ever. Direct observation of Anderson localization of electrons was always hampered by interactions and finite temperatures. Yet, many theoretical breakthroughs were made, highlighted by finite-size scaling2, the self-consistent theory3 and the numerical solution of the Anderson tight-binding model4,5. Theoretical understanding is based on simplified models or approximations and comparison with experiment is crucial. Despite a wealth of new experimental data, with microwaves and light6,7,8,9,10,11,12, ultrasound13 and cold atoms14,15,16, many questions remain, especially for three dimensions. Here, we report the first observation of sound localization in a random three-dimensional elastic network. We study the time-dependent transmission below the mobility edge, and report ‘transverse localization’ in three dimensions, which has never been observed previously with any wave. The data are well described by the self-consistent theory of localization. The transmission reveals non-Gaussian statistics, consistent with theoretical predictions.Cite this article
Hu, H., Strybulevych, A., Page, J. et al. Localization of ultrasound in a three-dimensional elastic network. Nature Phys 4, 945–948 (2008). https://doi.org/10.1038/nphys1101 