Biological piezoelectric materials have significant potential for bone repair and energy harvesting owing to their excellent biocompatibility and piezoelectric effect. The BaTiO₃/Ca₁₀(PO₄)₆(OH)₂ (BT/HA) composite material is an outstanding representative of biological piezoelectric materials, which has not been individually designed using digital light processing (DLP) 3D printing because of the large difference in the refractive index of its components. Therefore, in this work, double-sided-tooth plate-like BT crystals with high curvature were prepared via a hydrothermal process, and BT/HA ceramic slurries were grinded out using dispersed intermittent ball milling scheme, and BT/HA nanocomposite ceramic scaffolds were fabricated by DLP 3D printing technology. The nanostructure, dielectric properties, and piezoelectric energy harvesting performance of the BT/HA nanocomposite ceramic scaffolds were evaluated. The influences of different morphologies and contents for BT on the piezoelectric potential and stress distribution were analyzed based on a multi-physics coupling finite element simulation. The cell proliferation and adhesion abilities were investigated also. The BT/HA nanocomposite ceramic scaffolds present excellent dielectric properties, cell proliferation and adhesion abilities, and an open circuit voltage of 8 V during piezoelectric energy harvesting. The material properties and multi-physics coupling finite element analysis imply that the double-sided-tooth plate-like BT plays an important role for the fastness structure and electric field distribution in the BT/HA nanocomposite. Thus, this work provides a strategy for the application of the customized BT/HA nanocomposite ceramic scaffolds in new-generation orthopedic implants and biological energy harvesting.

生物压电材料由于其优异的生物相容性和压电效应，在骨修复和能量收集方面具有巨大的潜力。BaTiO ₃ /Ca ₁₀ (PO ₄ ) ₆ (OH) ₂ (BT/HA)复合材料是生物压电材料的杰出代表，由于尺寸较大，尚未使用数字光处理(DLP) 3D打印进行单独设计。其成分的折射率不同。因此，本工作通过水热法制备了高曲率的双面齿板状BT晶体，并采用分散间歇球磨方案研磨出BT/HA陶瓷浆料，并制备了BT/HA纳米复合陶瓷支架。采用DLP 3D打印技术制造。对 BT/HA 纳米复合陶瓷支架的纳米结构、介电性能和压电能量收集性能进行了评估。基于多物理场耦合有限元模拟，分析了不同形貌和含量的BT对压电势和应力分布的影响。还研究了细胞增殖和粘附能力。BT/HA纳米复合陶瓷支架具有优异的介电性能、细胞增殖和粘附能力，并且在压电能量收集期间具有8V的开路电压。材料性能和多物理场耦合有限元分析表明，双面齿板状BT对于BT/HA纳米复合材料的牢固结构和电场分布起着重要作用。因此，这项工作为定制的BT/HA纳米复合陶瓷支架在新一代骨科植入物和生物能量收集中的应用提供了策略。