Reverse Doppler Effect of Sound
Other Condensed Matter
2013-05-29 v2 Materials Science
Abstract
We report observation of reverse Doppler effect in a double negative acoustic metamaterial. The metamaterial exhibited negative phase velocity and positive group velocity. The dispersion relation is such that the wavelength corresponding to higher frequency is longer. We observed that the frequency was down-shifted for the approaching source, and up-shifted when the source receded.
Keywords
Cite
@article{arxiv.0901.2772,
title = {Reverse Doppler Effect of Sound},
author = {Sam Hyeon Lee and Choon Mahn Park and Yong Mun Seo and Zhi Guo Wang and Chul Koo Kim},
journal= {arXiv preprint arXiv:0901.2772},
year = {2013}
}