具有不同缺陷脱的声波晶体增强了能量定位和收获性能
Guo-Yu Zhang1, Zi-Jiang Liu1,2, Yan Zhang1
1School of Mathematics and Physics, Lanzhou Jiaotong University, Lanzhou 730070, China.
The Journal of the Acoustical Society of America
|April 10, 2025
概括
带有脱缺陷的声波晶体 (PnCs) 提高了压电能收获 (PEH) 装置的性能. 这种新的PnC设计实现了最佳的宽带能源采集,显著增加了自动供电电子产品的输出功率.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 纳米技术 纳米技术
背景情况:
- 压电能收获 (PEH) 对于自动供电的低功耗设备至关重要.
- 声波晶体 (PnCs) 提供了一种提高PEH性能的方法.
- 以前的研究集中在不完整的线路缺陷 PnCs.
研究的目的:
- 设计和研究一种具有脱缺陷 (点缺陷和不完整线缺陷) 的新型PNC.
- 分析拟议的PNC系统的分散曲线,能量定位和能量收集性能.
- 优化PNC结构,以增强宽带能源采集.
主要方法:
- 设计一个包含点缺陷和不完整线缺陷的PNC结构.
- 研究超级电池,缺陷子系统之间的距离有所变化.
- 分析分散特征,能量定位现象和输出发电.
主要成果:
- 减少不完整线路缺陷和点缺陷子系统之间的距离会导致脱特性.
- 当距离减少到两个单元电池时,可以实现最佳的宽带能量收集和定位.
- 获得的最大输出功率为9.49mW,比之前的研究增加了2.56到7.68倍.
结论:
- 拟议的带有脱缺陷的PnC显著提高了压电能收获性能.
- 这种PNC设计展示了卓越的宽带能源采集能力.
- 这些发现为使用多缺陷PNC改进PEH设备提供了新的策略.
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