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Phys Rev E Stat Nonlin Soft Matter Phys. 2005 Jan;71(1 Pt 2):018601; discussion 018602. Epub 2005 Jan 19.

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

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  • 1Grupo de Fenómenos Ondulatorios, Centro de Tecnología Nanofotónica, Universidad Politécnica de Valencia, C/ Camino de Vera s/n, E-46022 Valencia, Spain.

Abstract

Recently, Garcia et al. [Phys. Rev. E 67, 046606 (2003)] studied theoretically several acoustic devices with dimensions on the order of several wavelengths. Those authors also discussed experimental results previously reported by several of us [Phys. Rev. Lett. 88, 023902 (2002)]] and concluded that it is diffraction rather than refraction that is the dominating mechanism explaining 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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