Compared with Pb(Zr,Ti)O3 (PZT) ceramics, piezoelectric ceramic composites (PCCs), and piezoelectric polyvinylidene fluoride (PVDF) polymer, piezoelectric single crystal composites (PSCCs) are thought to be the promising candidates for hydrophone applications because of their superior hydrostatic performance. However, due to the brittleness and small dimensions of single crystals, the preparation of large-area or conformal PSCCs is to be challenged. Herein, we prepared a large-area PSCC with dimensions of 50 mm × 50 mm × 5 mm using 3-D-printing-assisted dice-and-insert technology. The hydrostatic piezoelectric performances for PSCC were investigated using a quasi-static method. The hydrostatic figure-of-merit (HFOM) of PSCC is approximately [Formula: see text]/N, which is higher by 69.4% than that of PCC. Furthermore, PSCC shows advantages in the dielectric loss, frequency constant, electromechanical coupling coefficient, and hydrostatic pressure stability. The results suggest that PSCCs have great potential in substantially improving the sensitivity of hydrophones. In addition, 3-D-printing-assisted dice-and-insert technology breaks through the restriction of as-grown piezoelectric crystal size so as to make it possible for the applications where large-scale piezoelectric composites are required.

中文翻译：

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通过用于水听器应用的 3D 打印辅助骰子和插入技术的大面积压电单晶复合材料。

与 Pb(Zr,Ti)O3 (PZT) 陶瓷、压电陶瓷复合材料 (PCC) 和压电聚偏二氟乙烯 (PVDF) 聚合物相比，压电单晶复合材料 (PSCC) 被认为是水听器应用的有前途的候选材料，因为它们具有优越的静水压性能。然而，由于单晶的脆性和小尺寸，大面积或共形 PSCC 的制备受到挑战。在此，我们使用 3-D 打印辅助的骰子和插入技术制备了尺寸为 50 mm × 50 mm × 5 mm 的大面积 PSCC。使用准静态方法研究了 PSCC 的静压压电性能。PSCC 的静水压品质因数 (HFOM) 约为 [公式：见正文]/N，比 PCC 高 69.4%。此外，PSCC 在介电损耗、频率常数、机电耦合系数和静水压力稳定性方面表现出优势。结果表明，PSCC 在大幅提高水听器灵敏度方面具有巨大潜力。此外，3D打印辅助的切块和插入技术突破了压电晶体生长尺寸的限制，使需要大规模压电复合材料的应用成为可能。