[2] [2] MA Xiaowen,CAO Wenwu.Single-crystal high-frequency intravascular ultrasound transducer with 40 μm axial resolution［J］.IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,2020,67(4):810-816.

[4] [4] CHIU C T,KANG B J,ELIAHOO P,et al.Fabrication and characterization of a 20 MHz microlinear phased-array transducer for intervention guidance［J］.IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,2017,64(8):1261-1268.

[5] [5] ZHOU Wei,ZHANG Tao,OU-YANG Jun,et al.PIN-PMN-PT single crystal 1-3 composite-based 20 MHz ultrasound phased array［J］.Micromachines,2020,11(5):524.

[7] [7] LI Xiang,MA Teng,TIAN Jian,et al.Micromachined PIN-PMN-PT crystal composite transducer for high-frequency intravascular ultrasound(IVUS) imaging［J］.IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,2014,61(7):1171-1178.

[8] [8] LI Xiaobing,TIAN Junting,YAN Dingwei,et al.Soft mold process for 1-3 piezocomposite and its applicat-ion in high frequency medical ultrasound imaging［C］//Xi’an,China:IEEE Ultrasonics Symposium,IEEE,2021:1-4.

[9] [9] WANG Jushan,CHEN Mingzhu,ZHAO Xiangyong,et al.Fabrication and high acoustic performance of high frequency needle ultrasound transducer with PMN-PT/-epoxy 1-3 piezoelectric composite prepared by diceand fill method［J］.Sensors and Actuators A:Physical,2021,318:112528.

[11] [11] LEI Zhihong,CHEN Yan,XU Guisheng,et al.Micro-machining of high quality PMN-31%PT single crystals for high-frequency (＞20 MHz) ultrasonic array transducer applications［J］.Micromachines,2020,11(5):512.

[12] [12] PIREDDA G,STROJ S,ZISS D,et al.Micro-machining of PMN-PT crystals with ultrashort laser pulses［J］.Applied Physics A,2019,125(3):201.

[13] [13] CHEN J,LAM K H,DAI J Y,et al.35 MHz PMN-PT single crystal annular array ultrasonic transducer［J］.Integrated Ferroelectrics,2012,139(1):116-122.

[14] [14] XU Jie,HAN Zhile,WANG Ninghao,et al.Micromachined high frequency 1-3 piezocomposite transducer using picosecond laser［J］.IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,2021,68(6):2219-2226.

[15] [15] LATHAM K,SAMSON C,WOODACRE J,et al.A 30 MHz,3D imaging,forward-looking miniature endoscope based on a 128 element relaxor array［J］.IEEE Transactions on Ultrasonics,Ferroelectrics,and Frequency Control,2021,68(4):1261-1271.

[16] [16] LV Jiabing,XIE Xu,ZHU Xinle,et al.Cold ablated high frequency PMN-PT/epoxy 1-3 composite transducer［J］.Applied Acoustics,2022,188:108540.