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Article Dans Une Revue IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control Année : 2014

Focusing capability of a phononic crystal based on a hollow metallic structure

Résumé

The dispersion curves of a phononic crystal (PC) based on a hollow metallic structure are presented. They exhibit a negative refraction dispersion branch and perfect refractive index matching with the surrounding water, leading to focusing capability. Numerical and experimental results are reported for a flat PC lens. The characteristics of the focal spot (intensity, dimensions, etc.) are numerically and experimentally investigated with the goal of finding the frequency of the optimal imaging performance.
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Dates et versions

hal-01056961 , version 1 (21-08-2014)

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Anne-Christine Hladky, Charles Croënne, Jerome O. Vasseur, Lionel Haumesser, Andrew N. Norris. Focusing capability of a phononic crystal based on a hollow metallic structure. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2014, 61, pp.1314-1321. ⟨10.1109/TUFFC.2014.3038⟩. ⟨hal-01056961⟩
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