基于局部维度协调的频段可控制的声学拓绝缘体
Xiao Liang1,2, Jiangxia Luo1, Jiaming Chu1
1Xiangtan University School of Mechanical Engineering and Mechanics, Xiangtan 411105, China.
Langmuir : the ACS journal of surfaces and colloids
|November 16, 2023
概括
这项研究引入了一种新的声学拓绝缘器,可以精确控制单向波传输频率. 这一进步为特定频段的拓保护边缘状态提供了新的可能性.
科学领域:
- 声学元材料是一种声学元材料.
- 凝聚物质物理学 凝聚物质物理学
- 波浪现象是一种波浪现象.
背景情况:
- 声学拓绝缘器由于拓保护的边缘状态而表现出独特的单向传输.
- 控制这种单向传输的频率范围对于实际应用至关重要.
研究的目的:
- 设计和演示一个频段控制的声学拓绝缘器.
- 通过操纵带间距位置来实现对单向传输频率范围的精确控制.
主要方法:
- 利用局部维度协调来设计声学拓绝缘体.
- 采用有限元法来分析能量带结构和自身模式.
- 导出了局部维度长度和带隙位置之间的关系.
主要成果:
- 通过调整局部维度长度,成功地证明了对带隙位置的控制.
- 实验验证了波段间隙对单向传播频率的影响的控制.
- 建立了一种方法来精确调整拓保护边缘状态的频率范围.
结论:
- 设计的声学拓绝缘器允许调节的单向传输频率.
- 这种对拓保护边缘状态的精确控制为声学设备应用开辟了新的途径.
- 这些发现为设计特定频段用于声波操纵提供了一条途径.
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