Acoustic hologram of the metasurface with phased arrays via optimality criteria
Mechanical Systems and Signal Processing(2022)
摘要
•The acoustic holography for any desired images is realized by introducing wave phase shifts.•The metamaterial-based hologram composed of helical units is invented.•A new optimization algorithm has been proposed for seek the phased arrays at the hologram plane.•The desired acoustic images with a high contrast ratio have been achieved numerically and experimentally.
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关键词
Acoustic hologram,Optimality criteria,Metasurface
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