拓性的音声元材料
Weiwei Zhu1,2, Weiyin Deng3, Yang Liu4
1Suzhou Institute for Advanced Research, University of Science and Technology of China, Suzhou 215123, People's Republic of China.
Reports on progress in physics. Physical Society (Great Britain)
|September 14, 2023
概括
拓性音声元材料利用独特的带结构来实现强大的新奇现象. 本综述涵盖了这一快速发展领域的理论和实验进展,包括拓激光器和异国情调相.
科学领域:
- 物理 物理学 物理
- 材料科学 材料科学 材料科学
- 超材料是什么?超材料是什么?
背景情况:
- 凝聚物质中的拓概念产生了强大的现象.
- 这种范式现在扩展到音声元材料,使新的物理.
- 音声元材料提供了特殊的控制和可调性.
研究的目的:
- 审查拓性音声元材料的理论和实验进展.
- 要突出推动这些进步的基础物理原理.
- 提供该领域的广泛概述,包括新兴主题和应用.
主要方法:
- 对拓声学现有理论框架的审查.
- 对实验演示和制造技术的分析.
- 讨论先进的概念,如非赫密斯效应和合成维度.
主要成果:
- 发现了诸如拓负折射和拓"sasers"之类的现象.
- 对高阶拓绝缘和韦尔半金属状态的观察.
- 探索马约拉纳样模式和脆弱的拓阶段.
结论:
- 拓音声元材料为基础物理和新型应用提供了丰富的平台.
- 该领域正在迅速发展,理论,实验和新兴概念之间的协同作用.
- 未来的方向包括探索活性物质,先进的制造和对科学更广泛的影响.
相关概念视频
01:28Standing Waves in a Cavity
955
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
955
01:30Plane Electromagnetic Waves I
3.7K
The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed...
The EM field is assumed...
3.7K