可调节的高超音速带隙形成在贝尔纳米粒子的异型晶体中
Hojin Kim1, Abdellatif Gueddida2, Zuyuan Wang3
1Department of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States.
ACS nano
|September 27, 2023
概括
研究人员使用子纳米粒子创建了异型音声材料. 这些材料表现出可调节的,取决于方向的高超音速音声带隙,为声学元材料提供了新的可能性.
科学领域:
- 材料科学 材料科学 材料科学
- 声学 声学 声学 声学
- 纳米技术 纳米技术
背景情况:
- 音声材料操纵声波传播,这对于元材料应用至关重要.
- 合纳米粒子组件为声学材料制造提供微米次的结晶性控制.
研究的目的:
- 使用形纳米颗粒制造异型晶体.
- 研究这些结构中的音声带间隙的形成和特性.
- 通过局部共振探索超材料行为潜力.
主要方法:
- 子形纳米粒子的自组自导自场.
- 制造异型晶体. 异型晶体的制造.
- 布里卢恩光谱仪用于检测音声带间隙.
主要成果:
- 形成了取决于方向的高超音速音声带间隙.
- 带隙频率尺度与格子参数.
- 局部共振诱导了超物质行为和杂交差距.
- 带隙频率表现出对杆面积比率变化的稳定性.
结论:
- 建立了用于设计异性质音声材料的结构-属性关系.
- 展示了一种创建有针对性的语音带隙的方法.
- 突出了纳米粒子组件对于先进的声学元材料的潜力.
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