均等元材料和动态声学模仿学
Jinjie Shi1, Hongchen Chu2, Aurélien Merkel3
1MOE Key Laboratory of Modern Acoustics, National Laboratory of Solid State Microstructures, School of Physics, Collaborative Innovation Center of Advanced Microstructures, and Jiangsu Physical Science Research Center, Nanjing University, Nanjing 210093, China.
Research (Washington, D.C.)
|August 14, 2025
概括
平价工程创造了用于超宽带波传输和声学伪装的新型超材料. 这一突破利用平价转换用于先进的材料设计,增强声纳系统.
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 在声学方面
背景情况:
- 均等转换是物理学中的基本对称性,但其在元材料科学中的应用尚未得到充分探索.
- 现有的超材料往往缺乏适应性和宽带性能,以适应先进的应用.
研究的目的:
- 引入使用平价转换的元材料的平价工程框架.
- 探索平价工程超材料在波传输和声学伪装方面的潜力.
主要方法:
- 开发一个框架来构建3D元原子的平价反转对应物.
- 创建平价工程的元材料板块.
- 使用数值模拟和实验原型进行验证.
主要成果:
- 由于互惠和平价转换之间的协同作用,在异常带宽中证明了不受扭曲的波传输.
- 实现了动态声学模拟,以适应性混合反射的签名.
- 在伪装操作期间保留传输波面的完整性.
结论:
- 平价工程为设计超宽带功能材料提供了一个新的范式.
- 同等性工程超材料具有声学伪装的变革潜力,特别是在声纳系统中.
- 这项工作突出了人工材料中平价转换的基本含义.
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