在基于异构结构近距离的板中过和操纵准兰布波
Ri-Feng Zhang1, Le Song1, Lei Yang2
1Key Laboratory of Cognitive Radio and Information Processing, Ministry of Education, Guilin University of Electronic Technology, Guilin 541004, People's Republic of China.
Ultrasonics
|July 24, 2025
概括
我们展示了一种新的弹性波异质连接波导,可以控制波的传播. 这种结构可以在带隙内过和操纵准兰布波 (QLWs),并用于信号处理.
科学领域:
- 物理 物理学 物理
- 材料科学 材料科学 材料科学
- 声学 声学 在声学上
背景情况:
- 经典波的带隙调制是一个重要的研究领域.
- 人工音声晶体和声学元材料提供可调节的波传播特性.
研究的目的:
- 提出和研究用于弹性波传播控制的异质连接波导.
- 探索使用周期波浪边界对准兰布波 (QLWs) 的过和操纵.
主要方法:
- 使用激光超声波系统进行实验研究.
- 使用有限元法 (FEM) 模拟进行分析.
- 制造和测试带有不同波动的弹性波异质连接.
主要成果:
- QLW在带隙中被阻塞,但在异质连接处的间隙内显示特定频率的传输峰值.
- 传输峰值频率对不同波浪的近距离高度敏感.
- 在异质连接附近实验观察到QLWs的局部增强.
结论:
- 异质连接波导有效地过和操纵QLW.
- 通过异质连接诱导的接口状态被证实可以控制弹性波传播.
- 这项工作有助于弹性波操纵和信号处理应用.
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