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首页> 外文会议>Fifth Asia International Symposium on Mechatronics >Output power dependence of piezoelectric nanogenerator under mechanical deformation
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Output power dependence of piezoelectric nanogenerator under mechanical deformation

机译：压电纳米发电机在机械变形下的输出功率依赖性

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Piezoelectric nanogenerators (NGs) harvesting mechanical energies have been getting attraction because of their advanced properties, such as continuous operation, low cost, and non-toxic operation. However, the most of research were focused on improvement of piezoelectric materials by applying chemical methods. In this report, we demonstrated the energy conversion efficiency(ECE) difference under different mechanical deformations, bending and twisting. Depending on the deformation conditions, strain distributions are critically changed, resulting in different output performance. For this research, we prepared ZnO-based PNG by sputtering. To understand the effect of external mechanical deformation on the ECE, we characterize the ECE by the ratio of output electrical energy and strain energy of ZnO active layer. To calculate the strain energy in ZnO active layer, we conducted numerical simulation of two mechanical deformations. Finally, we obtained that the ECE under twisting deformation is much higher than that under bending deformation. Our results could provide a design direction to PNG systems as high performance power generators.
机译：压电式纳米发电机（NGs）收集机械能，由于其先进的特性（例如连续运行，低成本和无毒运行）而吸引了人们的注意。但是，大多数研究集中在通过应用化学方法改进压电材料上。在本报告中，我们展示了在不同的机械变形，弯曲和扭曲下的能量转换效率（ECE）差异。根据变形条件，应变分布会发生重大变化，从而导致不同的输出性能。为了进行这项研究，我们通过溅射制备了基于ZnO的PNG。为了了解外部机械变形对ECE的影响，我们通过输出电能与ZnO活性层的应变能之比来表征ECE。为了计算ZnO活性层中的应变能，我们对两种机械变形进行了数值模拟。最终，我们得出扭曲变形下的ECE远高于弯曲变形下的ECE。我们的结果可以为PNG系统作为高性能发电机提供设计方向。

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