Axial acoustic radiation force on an elastic spherical shell near an impedance boundary for zero-order quasi-Bessel-Gauss beam

作     者：Yu-Chen Zang Wei-Jun Lin Chang Su Peng-Fei Wu 臧雨宸;林伟军;苏畅;吴鹏飞

作者机构：Institute of AcousticsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2021年第30卷第4期

页      面：305-318页

核心收录：

学科分类：07[理学] 082403[工学-水声工程] 08[工学] 070206[理学-声学] 0824[工学-船舶与海洋工程] 0702[理学-物理学] 

基　　金：Project supported by the National Natural Science Foundation of China(Grant Nos.81527901 11604361 and 91630309) 

主　　题：acoustic radiation force zero-order quasi-Bessel-Gauss beam impedance boundary elastic spherical shell 

摘      要：Shell structures have increasingly widespread applications in biomedical ultrasound fields such as contrast agents and drug delivery,which requires the precise prediction of the acoustic radiation force under various circumstances to improve the system *** acoustic radiation force exerted by a zero-order quasi-Bessel-Gauss beam on an elastic spherical shell near an impedance boundary is theoretically and numerically studied in this *** means of the finite series method and the image theory,a zero-order quasi-Bessel-Gauss beam is expanded in terms of spherical harmonic functions,and the exact solution of the acoustic radiation force is derived based on the acoustic scattering *** acoustic radiation force function,which represents the radiation force per unit energy density and per unit cross-sectional surface,is especially *** simulated results for a polymethyl methacrylate shell and an aluminum shell are provided to illustrate the behavior of acoustic radiation force in this *** simulated results show the oscillatory property and the negative radiation force caused by the impedance *** appropriate relative thickness of the shell can generate sharp peaks for a polymethyl methacrylate *** radiation force can be obtained at small half-cone angles and the beam waist only affects the results at high *** that the quasi-Bessel-Gauss beam possesses both the energy focusing property and the non-diffracting advantage,this study is expected to be useful in the development of acoustic tweezers,contrast agent micro-shells,and drug delivery applications.