论文标题
部分可观测时空混沌系统的无模型预测
Homogeneous Dislocation-Induced Rainbow Concentrating for Elastic Waves
论文作者
论文摘要
缺陷在晶体的物理特性中起着至关重要的作用，无论是对于经典还是量子系统。例如，在光子/语音晶体中，缺陷可以作为经典电磁或机械波的精确引导和定位。彩虹浓缩，最近提出的外来波浪定位[Phys。莱特牧师。 126，113902（2021）]利用缺陷使弱信号在真实空间中的收集和频率路由。在本文中，使用固态语音晶体（PNC）板，我们通过故意将均质分级位错（即线缺陷）中的均质分级脱位来验证这种现象。两个被缺陷隔开的PNC将与缺陷一起繁殖确定性的界面状态，从而为弹性波提供彩虹捕获和集中度。我们的基于PNC的彩虹捕获器和集中器可扩展且可配置，这有望在诸如能量收集，信息处理和操纵诸如能量收集，信息处理之类的应用中有望。
Defects play a crucial role in the physical properties of crystals, whether for classical or quantum systems. For example, in photonic/phononic crystals, defects can serve as precise guidance and localization of classical electromagnetic or mechanical waves. Rainbow concentrating, a recently proposed exotic wave localization [Phys. Rev. Lett. 126, 113902 (2021)] exploits defects to enable the collection and frequency routing of weak signals in real space. In this paper, using a solid-state phononic crystal (PnC) plate, we experimentally verify this phenomenon by deliberately infusing a homogeneous graded dislocation, i.e., a line defect, into the PnC. Two PnCs separated by the defect will breed deterministic interface states along with the defect, offering rainbow trapping and concentrating for elastic waves. Our PnC-based rainbow trappers and concentrators are scalable and configurable, promising for advancing applications like energy harvesting, information processing, and acoustofluidic manipulating.
