Piezoelectric Phononic 晶体可调节带隙的进展
Yiwei Wang1, Xiaomei Xu1, Li Li1
1College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China.
Materials (Basel, Switzerland)
|September 28, 2023
概括
在压电声波晶体 (PC) 中的可调节带隙提供了增强的应用. 这些压电PC可以通过外部电路进行调节,克服了传统PC的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 声学 声学 在声学方面
- 固态物理 固态物理
背景情况:
- 传统的音声晶体 (PC) 具有由几何学和材料特性决定的固定带隙,限制了它们的可调性.
- 压电PC,利用材料,如氧化,酸,展现多物理合,使其带隙的外部控制.
研究的目的:
- 总结和分析压电声波晶体的典型结构.
- 审查和分析压电PC中调节带隙的方法.
- 检查压电PC带隙的计算方法,并提出未来的研究方向.
主要方法:
- 可调节的压电PC被分为单一,复合和补丁型结构的分类.
- 对各种适用于压电PC的带隙调技术的分析.
- 对计算方法的审查,以确定这些先进材料中的带隙.
主要成果:
- 确定了可调节的压电PC的三个主要结构类别.
- 通过外部电刺激调整带隙频率的详细常用方法.
- 总结了用于预测带隙行为现有的计算技术.
结论:
- 压电PC为可调的声波操纵提供了一个有前途的途径.
- 目前的研究突出了潜力,但也确定了现有研究的局限性.
- 未来的工作重点应该是改进调机制,提高计算精度,并探索新的应用.
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