Piezoelectric energy harvesting has attracted tremendous interest for designing sustainable self-powered devices/systems targeted to special environment such as wireless or wearable applications. The traditional cavity (e.g., phononic cavity mode) excitation is highly applicable in terms of sufficient power generation, nevertheless, has to endure the drawback of extremely poor robustness intrinsic to the trivial cavity modes. We propose to use phononic thin plate systems for robust energy harvesting application relying on zero-dimensional cavities confined by the Kekulé distorted topological vortices. The harvesting power induced by topological cavities is about 30 times that of the bare plate. Further studies on the effects of deliberately introduced defects on the output power show that the proposed energy harvesting system is highly robust against symmetry-preserving defects, and is less influenced even for symmetry-breaking defects at moderate perturbation level. Beyond the reported energy harvesting application, we foresee that our work may open avenues for robust operations in the realm of wireless sensing and structural health monitoring.

压电能量收集在设计针对特殊环境（如无线或可穿戴应用）的可持续自供电设备/系统方面引起了极大的兴趣。传统的腔体（例如，声子腔体模式）激励在足够的发电方面是高度适用的，但是必须忍受琐碎的腔体模式固有的极差的鲁棒性的缺点。我们建议使用声子薄板系统进行强大的能量收集应用，这依赖于由 Kekulé 扭曲拓扑涡旋限制的零维腔。拓扑空腔引起的捕获功率大约是裸板的 30 倍。对故意引入的缺陷对输出功率的影响的进一步研究表明，所提出的能量收集系统对保持对称性的缺陷具有高度鲁棒性，即使在中等扰动水平下对对称性破坏缺陷的影响也较小。除了报告的能量收集应用之外，我们预计我们的工作可能会为无线传感和结构健康监测领域的稳健运营开辟道路。