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，以提高通过民用基础设施，机械机械和航空航天系统传播声音的灵活性，包括在声学成像，缺陷检测和噪声控制中应用，从而促进科学的进步，并促进科学的进步，并促进国家繁荣和福利。声学元面是二维薄薄的人造物质，具有对声波散射的非同寻常的控制权。直到最近，此类元信息具有固定的配置，这些配置很难实时调整，从而限制了它们的潜在使用和性能。最近关注可调，可重构和可编程的声学元信息有望对声波有效且智能控制，但是现有的解决方案遭受了复杂的调整机制，使用主动元素的使用和效率低下。该项目将通过使用折纸原理设计的柔性结构来证明可重新配置的声波控制的新的和简单的机制来克服这些限制，折纸原理可以实时调制其折叠的几何形状。尽管折纸原理已被广泛用于机器人技术，软材料和柔性电子设备，但动态折纸与声波控制之间的关系在很大程度上没有探索。这项研究生成的知识和工具将使下一代可重构波浪的设备适应不断变化的环境和性能目标。旨在吸引新一代学生进行STEM教育和研究的活动包括向K-12学生进行外展计划，以及在基于团队的技术研究项目中的广泛计划参与。这项研究旨在为对形状，周期性和折纸的大小如何动态地变化而影响的形状，周期性和大小对他们的形状，周期性和大小进行动态变化，从而对他们的形状，周期性和大小影响造成基本理解，从而对其进行动态变化和增强性影响，并对其进行了促进影响。它将通过建立一个理论和计算框架来实现这一结果，以通过制定设计策略来表征和预测与动态折纸结构的声波相互作用，从而可以通过目标功能对动态折纸结构进行特定应用的综合，并研究不同的调谐机制。实验验证和测试将对原型可重构的声学元面积进行，该原理由理论分析强调的折纸原理。这种实验实现将用于证明波动转向和波动焦点功能的典型传感，交流，成像和能量收集应用的功能。该奖项反映了NSF的法定任务，并被认为值得通过基金会的知识分子优点和更广泛的影响审查标准通过评估来进行评估。

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

Non-Hermitian planar elastic metasurface for unidirectional focusing of flexural waves

• DOI: 10.1063/5.0097177
• 发表时间: 2022-06
• 期刊: Applied Physics Letters
• 影响因子: 4
• 作者: Katerina Stojanoska;Chen Shen