Metamaterial Design Platform and Dynamic Building Blocks for Non-Equilibrium, Symmetry-Violating Manipulation of Mechanical Waves

用于非平衡、对称破坏机械波操纵的超材料设计平台和动态构建模块

基本信息

批准号：
2128671
负责人：
Jayson Paulose
金额：
$ 64.66万
依托单位：
University of Oregon Eugene
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2021
资助国家：
美国
起止时间：
2021-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2128671&HistoricalAwards=false
关键词：
Metamaterial Design Platform Dynamic Building

项目摘要

This grant will fund research that enables manipulating information stored in sound waves and mechanical vibrations, with application to sonar, medical ultrasonic, and structural diagnostic technologies, thereby promoting the progress of science, advancing the national prosperity and health, and securing the national defense. The development of programmable microelectronic circuits in the 20th century ushered in the information age by enabling fast, precise, and on-demand manipulation of electrical signals. Similar technologies for manipulating mechanical information do not yet exist. They require devising microscale acoustic circuit elements that can be chained together in large arrays and individually programmed. This project will make critical advances toward programmable acoustic microchips by investigating methods to manipulate the vibrational properties of atomically thin micromechanical elements, as well as developing new mathematical and computational techniques to predict their collective behavior. These activities will be incorporated into pre-collegiate summer programs and undergraduate research experiences, which are tailored to improve retention in STEM and boost participation of individuals from currently underrepresented groups.This research aims to create a new class of individually addressable and reconfigurable micromechanical building blocks, as well as to derive a mathematical model to predictably manipulate vibrations in coupled assemblies of such building blocks, thereby realizing essential sound manipulation capabilities: amplification, rectification, binary information storage, and logic operations. The building blocks and interconnects will consist of graphene nanoelectromechanical membrane resonators, whose unique physical properties enable the use of electrostatic or optical fields to locally modulate elasticity and coupling with unprecedented speed and strength. The parallel theoretical effort will combine finite-element simulations with discrete Floquet analysis to model mechanical systems with time-modulated parameters, space-time periodicity, and nonlinear response. These advances will be showcased through experimental demonstrations of nonequilibrium acoustic functionalities, such as coherent amplification, phase-synchronization, digital information processing, PT-transition-edge sensing, and one-way sound transmission at spatial and temporal scales relevant to future acoustic technologies. Beyond advancing the engineering design of acoustic circuits and active materials, the work provides an experimental foundation for testing fundamental concepts in modern physics and materials science, such as parity-time symmetry breaking, non-Hermitian topological protection, and resonator-based neuromorphic computing.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这项赠款将资助研究，以操纵存储在声波和机械振动中的信息，并应用于声纳，医疗超声波和结构性诊断技术，从而促进科学的进步，推动国家繁荣和健康，并确保国家防御。 20世纪可编程的微电子电路的开发通过对电信号的快速，精确和点播操作实现信息时代的发展。处理机械信息的类似技术尚不存在。他们需要设计微观的声电路元件，这些元素可以在大型阵列中链接在一起并单独编程。该项目将通过研究操纵原子薄的微机械元素的振动特性，并开发新的数学和计算技术来预测其集体行为的方法，从而为可编程的声学微芯片迈出关键的进步。 These activities will be incorporated into pre-collegiate summer programs and undergraduate research experiences, which are tailored to improve retention in STEM and boost participation of individuals from currently underrepresented groups.This research aims to create a new class of individually addressable and reconfigurable micromechanical building blocks, as well as to derive a mathematical model to predictably manipulate vibrations in coupled assemblies of such building blocks, thereby realizing基本声音操纵功能：放大，纠正，二进制信息存储和逻辑操作。构建块和互连将由石墨烯纳米机电膜共振器组成，其独特的物理性能使静电或光场的使用能够局部调节弹性，并以前所未有的速度和强度耦合。平行的理论工作将将有限元模拟与离散的Floquet分析相结合，以建模机械系统，以时间调制参数，时空周期性和非线性响应。这些进步将通过非平衡声学功能的实验证明来展示，例如相干扩增，相同步，数字信息处理，PT-变式 - 边缘传感以及与未来声学技术相关的空间和时间尺度上的单向声音传递。除了推进声电路和活跃材料的工程设计外，这项工作还为测试现代物理和材料科学的基本概念的基础提供了基础标准。