Quasi-Bessel Acoustic-Vortex Beams Constructed by the Line-Focused Phase Modulation for a Ring Array of Sectorial Planar Transducers

Dengliang Liang, Gaorui Hu,Ning Ding,Qingyu Ma,Gepu Guo,Yuzhi Li,Juan Tu,Dong Zhang D

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control（2022）

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摘要

Acoustic Bessel beams are commonly used as ideal sources to study the characteristics for acoustic-vortex (AV) beams, exhibiting prosperous perspectives in contactless object manipulations and acoustic communications. However, accurate Bessel beams are difficult to construct using 2-D arrays in practical applications. By integrating active phase control and passive phase modulation to a ring array...

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关键词

Acoustic beams,Acoustics,Structural beams,Lenses,Phase modulation,Particle beams,Transducers

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