Using a controlled surface wrinkling strategy, we designed a flexible energy harvesting system made from a compliant substrate, stiff skin layer, a thin PZT film, and an interdigitated electrode sandwich structure. This energy harvesting system, which operates under compressing and releasing operating modes that are common in nature and engineering, accommodates orders-of-magnitude increases in maximum compressive strain without fracture. This increased range allows the system to be used for more applications. We systematically explored the effects of different parameters on system compressibility and piezopotential output performance. These analytical results guide the design for enhancing compressibility or piezopotentials of the energy harvesting system.

我们采用可控的表面起皱策略，设计了一种柔性的能量收集系统，该系统由顺应性基材，坚硬的表皮层，薄的PZT膜和叉指式电极夹心结构制成。该能量收集系统在自然和工程领域中常见的压缩和释放操作模式下运行，可适应最大压缩应变的数量级增加而不会破裂。这种增加的范围使系统可以用于更多应用。我们系统地探索了不同参数对系统可压缩性和压电势输出性能的影响。这些分析结果可指导设计，以增强能量收集系统的可压缩性或压电势。