Comment on "Theory of tailoring sonic devices: Diffraction dominates over refraction"

Details Comment on "Theory of tailoring sonic devices: Diffraction dominates over refraction" Comment on "Theory of tailoring sonic devices: Diffraction dominates over refraction"

2004-05-10

arxiv.org/abs/cond-mat/0405181v1

Physics

Condensed Matter

Materials Science

2 pages, 2 figures, a comment on an article

Scientific paper

10.1103/PhysRevE.71.018601

Recently N. Garcia et al. (Phys. Rev. E 67, 046606 (2003)) theoretically studied several acoustic devices with dimensions on de order of several wavelenghts. The authors discussed on experimental results previously reported by several of us (F. Cervera et al., Phys. Rev. Lett. 88, 023902 (2002)). They concluded that diffraction and not refraction is the ominating mechanism that explain the focusing effects observed in those experiments. In this Comment we reexamined their calculations and discussed why some of their interpretations of our results are misleading.

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