中国物理B ›› 2018, Vol. 27 ›› Issue (12): 124301-124301.doi: 10.1088/1674-1056/27/12/124301

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Thermoacoustic-reflected focusing lens based on acoustic Bessel-like beam with phase manipulation

An-Ru Hou(侯安茹), Wen-Ting Gao(高文婷), Jiao Qian(钱姣), Hong-Xiang Sun(孙宏祥), Yong Ge(葛勇), Shou-Qi Yuan(袁寿其), Qiao-Rui Si(司乔瑞), Xiao-Jun Liu(刘晓峻)   

  1. 1 Research Center of Fluid Machinery Engineering and Technology, Faculty of Science, Jiangsu University, Zhenjiang 212013, China;
    2 Key Laboratory of Modern Acoustics, Department of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;
    3 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2018-07-30 修回日期:2018-09-30 出版日期:2018-12-05 发布日期:2018-12-05
  • 通讯作者: Hong-Xiang Sun, Yong Ge E-mail:jsdxshx@ujs.edu.cn;geyong@ujs.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11774137 and 51779107), the Six-Talent Peaks Project in Jiangsu Province, China (Grant No. GDZB-019), the China Postdoctoral Science Foundation (Grant No. 2017M621643), the Natural Science Foundation of Jiangsu Higher Educational Institutions of China (Grant No. 18KJB140003), and the Practice Innovation Training Program Projects for Jiangsu University (Grant No. 201710299023Z) and for the Industrial Center of Jiangsu University.

Thermoacoustic-reflected focusing lens based on acoustic Bessel-like beam with phase manipulation

An-Ru Hou(侯安茹)1, Wen-Ting Gao(高文婷)1, Jiao Qian(钱姣)1, Hong-Xiang Sun(孙宏祥)1,2,3, Yong Ge(葛勇)1,2, Shou-Qi Yuan(袁寿其)1, Qiao-Rui Si(司乔瑞)1, Xiao-Jun Liu(刘晓峻)2,3   

  1. 1 Research Center of Fluid Machinery Engineering and Technology, Faculty of Science, Jiangsu University, Zhenjiang 212013, China;
    2 Key Laboratory of Modern Acoustics, Department of Physics and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;
    3 State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2018-07-30 Revised:2018-09-30 Online:2018-12-05 Published:2018-12-05
  • Contact: Hong-Xiang Sun, Yong Ge E-mail:jsdxshx@ujs.edu.cn;geyong@ujs.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11774137 and 51779107), the Six-Talent Peaks Project in Jiangsu Province, China (Grant No. GDZB-019), the China Postdoctoral Science Foundation (Grant No. 2017M621643), the Natural Science Foundation of Jiangsu Higher Educational Institutions of China (Grant No. 18KJB140003), and the Practice Innovation Training Program Projects for Jiangsu University (Grant No. 201710299023Z) and for the Industrial Center of Jiangsu University.

摘要:

We report the realization of broadband reflected acoustic focusing lenses based on thermoacoustic phased arrays of Bessel-like beams, in which the units of phase manipulation are composed of three rigid insulated boundaries and a thermal insulation film in air with different temperatures. Based on these units, we realize a reflected focusing lens which can focus reflected acoustic energy on a line, and its fractional bandwidth can reach about 0.29. In addition, we discuss the influences of the base angle of Bessel-like beam, the number of basic unit, and the variation of unit temperature on focusing performances in details. Furthermore, the reflected focusing lens for the cylindrical acoustic wave based on the Bessel-like beam is also demonstrated. The proposed focusing lens has the advantages of a broad working bandwidth, large focus size, and high robustness, which may provide possibilities for the design and application of acoustic lenses.

关键词: acoustic focusing, Bessel-like beam, thermoacoustic, phase manipulation

Abstract:

We report the realization of broadband reflected acoustic focusing lenses based on thermoacoustic phased arrays of Bessel-like beams, in which the units of phase manipulation are composed of three rigid insulated boundaries and a thermal insulation film in air with different temperatures. Based on these units, we realize a reflected focusing lens which can focus reflected acoustic energy on a line, and its fractional bandwidth can reach about 0.29. In addition, we discuss the influences of the base angle of Bessel-like beam, the number of basic unit, and the variation of unit temperature on focusing performances in details. Furthermore, the reflected focusing lens for the cylindrical acoustic wave based on the Bessel-like beam is also demonstrated. The proposed focusing lens has the advantages of a broad working bandwidth, large focus size, and high robustness, which may provide possibilities for the design and application of acoustic lenses.

Key words: acoustic focusing, Bessel-like beam, thermoacoustic, phase manipulation

中图分类号:  (Ultrasonics, quantum acoustics, and physical effects of sound)

  • 43.35.+d
43.25.+y (Nonlinear acoustics)