ERI: Exploiting Dynamic Origami for Reconfigurable and Versatile Control of Acoustic Waves

ERI：利用动态折纸实现声波的可重构和多功能控制

• 批准号: 2137749
• 负责人: Chen Shen
• 金额: $ 20万
• 依托单位: Rowan University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-02-01 至 2024-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2137749&HistoricalAwards=false
• 关键词: ERI; Exploiting; Dynamic; Origami; Reconfigurable

This Engineering Research Initiation (ERI) grant will fund research that enables increased flexibility in the control of sound propagating through civil infrastructure, mechanical machinery, and aerospace systems, including for applications in acoustic imaging, defect detection, and noise control, thereby promoting the progress of science and advancing the national prosperity and welfare. Acoustic metasurfaces are two-dimensional thin artificial materials that are empowered with extraordinary control over the scattering of sound waves. Until recently, such metasurfaces had fixed configurations that were difficult to tune in real time, thereby limiting their potential use and performance. A recent focus on tunable, reconfigurable, and programmable acoustic metasurfaces promises efficient and smart control of sound waves, but existing solutions suffer from sophisticated tuning mechanisms, use of active elements, and poor efficiency. This project will overcome these limitations by demonstrating new and simple mechanisms for reconfigurable acoustic wave control using flexible structures designed by origami principles, whose folded geometry may be modulated in real time. Although origami principles have been widely used in robotics, soft materials, and flexible electronics, the relationship between dynamic origami and acoustic wave control has been largely unexplored. The knowledge and tools generated by this research will enable the next generation of reconfigurable wave-based devices that are adaptive to changing environments and performance objectives. Activities aiming to engage new generations of students in STEM education and research include outreach programs to K-12 students and extensive planned participation of undergraduate students in team-based technical research projects.This research aims to make fundamental contributions to a practical understanding of how the shape, periodicity, and size of origami structures change dynamically as they undergo deformation and the concomitant impact on acoustic wave propagation. It will achieve this outcome by building a theoretical and computational framework for characterizing and predicting acoustic wave interactions with dynamic origami structures, by developing design strategies that enable application-specific synthesis of dynamic origami structures with target functionalities, and by investigating different tuning mechanisms. Experimental validation and testing will be performed on prototype reconfigurable acoustic metasurfaces that leverage principles of origami highlighted by the theoretical analysis. Such experimental realization will be used to demonstrate wave steering and wave focusing functionalities typical of sensing, communication, imaging, and energy harvesting applications.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.

这项工程研究启动（ERI）赠款将资助研究，使通过民用基础设施，机械和航空航天系统，包括声学成像，缺陷检测和噪声控制的应用程序，提高声音传播控制的灵活性，从而促进科学的进步和推进国家的繁荣和福利。声学超颖表面是二维薄的人造材料，其被赋予对声波散射的非凡控制。直到最近，这样的元表面具有难以在真实的时间中调整的固定配置，从而限制了它们的潜在使用和性能。最近对可调谐、可重新配置和可编程声学超表面的关注承诺了对声波的有效和智能控制，但是现有的解决方案受到复杂的调谐机制、有源元件的使用和低效率的影响。这个项目将克服这些限制，展示新的和简单的机制，可重构的声波控制使用灵活的结构设计的折纸原则，其折叠的几何形状可以在真实的时间调制。虽然折纸原理已被广泛应用于机器人，软材料和柔性电子产品，动态折纸和声波控制之间的关系在很大程度上尚未探索。这项研究所产生的知识和工具将使下一代可重构的基于波的设备，是适应不断变化的环境和性能目标。旨在吸引新一代学生参与STEM教育和研究的活动包括面向K-12学生的推广计划以及本科生广泛参与基于团队的技术研究项目。这项研究旨在为实际理解STEM的形状，周期性，折纸结构的尺寸随着它们经受变形和对声波传播的伴随影响而动态地改变。它将通过建立一个理论和计算框架，用于表征和预测声波与动态折纸结构的相互作用，通过开发设计策略，使特定应用的动态折纸结构与目标功能的合成，并通过调查不同的调谐机制来实现这一结果。实验验证和测试将在原型可重构声学元表面上进行，这些元表面利用了理论分析所强调的折纸原理。这种实验实现将被用来证明波转向和波聚焦功能的传感，通信，成像和能源harvestingapplication.This奖项反映了美国国家科学基金会的法定使命，并已被认为是值得通过使用基金会的智力价值和更广泛的影响审查标准进行评估的支持。

项目成果

Selectively exciting quasibound states in the continuum in open microwave resonators using dielectric scatters

• DOI: 10.1103/physrevb.107.184309
• 发表时间: 2023-05
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Olugbenga Gbidi;Chen Shen

Underwater double vortex generation using 3D printed acoustic lens and field multiplexing

• DOI: 10.1063/5.0201781
• 发表时间: 2024-03
• 期刊: APL Materials
• 影响因子: 6.1
• 作者: Chadi Ellouzi;Ali Zabihi;Farhood Aghdasi;Aidan Kayes;Milton Rivera;Jiaxin Zhong;Amir Miri;Chen Shen

Mitigating Inaudible Ultrasound Attacks on Voice Assistants With Acoustic Metamaterials

• DOI: 10.1109/access.2023.3266722
• 发表时间: 2023
• 期刊: IEEE Access
• 影响因子: 3.9
• 作者: J. S. Lloyd;Cole G. Ludwikowski;Cyrus Malik;Chen Shen

Acoustic resonances in non-Hermitian open systems

• DOI: 10.1038/s42254-023-00659-z
• 发表时间: 2023-11
• 期刊: Nature Reviews Physics
• 影响因子: 38.5
• 作者: Lujun Huang;Sibo Huang;Chen Shen;Simon Yves;A. Pilipchuk;Xiang Ni;Seunghwi Kim;Chiang Kei Yan-Chiang-Kei-Y

Tunable, reconfigurable, and programmable acoustic metasurfaces: A review

• DOI: 10.3389/fmats.2023.1132585
• 发表时间: 2023-03
• 作者: A. Zabihi;Chadi Ellouzi;Chen Shen