Theoretical analysis and experimental validation of radial cascaded composite ultrasonic transducer
Xiao-Yu Wang(王晓宇), Zhi-Xin Yu(余芷欣), Jing Hu(胡静), and Shu-Yu Lin(林书玉)
中国物理B . 2021, (4): 40701 .  DOI: 10.1088/1674-1056/abd399