A High-Sensitivity, Broadband (1_A,1_B)-3 Single-Crystal Composite Ultrasonic Transducer

TY - JOUR

T1 - A High-Sensitivity, Broadband (1A,1B)-3 Single-Crystal Composite Ultrasonic Transducer

AU - Lei, Yu

AU - Gao, Ziyan

AU - Gan, Guohong

AU - Bai, Wei

AU - Wei, Yang

AU - Wang, Bing

AU - Yuan, Xiaoting

AU - Hou, Zewei

AU - Hong, Jiawang

AU - Dong, Shuxiang

N1 - Publisher Copyright: © 2025 Wiley-VCH GmbH.

PY - 2025/3/11

Y1 - 2025/3/11

N2 - Piezocomposite ultrasonic transducers (PUTs) are extensively used in diverse technological fields, however, PUTs based on conventional 1–3 piezocomposite containing only one type of piezo pillars have met a bottleneck in further performance enhancement. Herein, based on the [011]-oriented relaxor ferroelectric Pb(In1/3Nb2/3)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) crystal, a novel (1A,1B)-3 piezocomposite structure containing two types of single-crystal pillars- high d33, kt pillars with square cross-section (termed as 1A) and high dhgh pillars with rectangular cross-section (termed as 1B), alternately arranging in epoxy resin and forming a 5 × 9 array are reported. The combination effect and synergistic action of two different piezo-pillars in the piezocomposite notably broaden the working bandwidth, improve the sound sensitivity, and also produce a suppression effect to undesirable transverse vibration modes. Experimental results validate the performance enhancements of (1A,1B)-3 composite-based PUT: the increases in –3 dB transmitting, receiving bandwidth, and receiving sensitivity are 71.4%, 28.6%, and 26.6%, respectively, in comparison to conventional 13 single-crystal composite-based PUT. Moreover, its hydrostatic figure of merit (HFOM) dhgh (=4084.9 × 10−15 m2 N−1) is 177.3% higher than that of commercial single crystal 13 piezocomposites. The proposed design strategy represents a promising development direction of next-generation bandwidth and high-sensitivity ultrasonic transducers.

AB - Piezocomposite ultrasonic transducers (PUTs) are extensively used in diverse technological fields, however, PUTs based on conventional 1–3 piezocomposite containing only one type of piezo pillars have met a bottleneck in further performance enhancement. Herein, based on the [011]-oriented relaxor ferroelectric Pb(In1/3Nb2/3)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PIN-PMN-PT) crystal, a novel (1A,1B)-3 piezocomposite structure containing two types of single-crystal pillars- high d33, kt pillars with square cross-section (termed as 1A) and high dhgh pillars with rectangular cross-section (termed as 1B), alternately arranging in epoxy resin and forming a 5 × 9 array are reported. The combination effect and synergistic action of two different piezo-pillars in the piezocomposite notably broaden the working bandwidth, improve the sound sensitivity, and also produce a suppression effect to undesirable transverse vibration modes. Experimental results validate the performance enhancements of (1A,1B)-3 composite-based PUT: the increases in –3 dB transmitting, receiving bandwidth, and receiving sensitivity are 71.4%, 28.6%, and 26.6%, respectively, in comparison to conventional 13 single-crystal composite-based PUT. Moreover, its hydrostatic figure of merit (HFOM) dhgh (=4084.9 × 10−15 m2 N−1) is 177.3% higher than that of commercial single crystal 13 piezocomposites. The proposed design strategy represents a promising development direction of next-generation bandwidth and high-sensitivity ultrasonic transducers.

KW - (1,1)-3 single-crystal piezocomposite

KW - combination effect

KW - high sensitivity and broadband ultrasonic transducer

KW - hydrostatic figure of merit

KW - synergistic action

UR - https://www.scopus.com/pages/publications/86000435978

U2 - 10.1002/adfm.202417084

DO - 10.1002/adfm.202417084

M3 - Article

AN - SCOPUS:86000435978

SN - 1616-301X

VL - 35

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 11

M1 - 2417084

ER -