发表机构
John A. Paulson School of Engineering and Applied Sciences, Harvard University; Laboratoire d’Acoustique de l’Université du Mans, UMR 6613, Institut d’Acoustique – Graduate School, CNRS, Le Mans Université（哈佛大学约翰·A·保尔森工程与应用科学学院; 勒芒大学声学实验室，UMR 6613，声学研究所-研究生院，法国国家科学研究中心，勒芒大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究实验展示了一种质量-质量双稳态超材料，通过边界动态激励实现机械信息的写入与读取，兼具传感和波控功能。
AI 中文摘要
具有集成双稳态元件的机械超材料已成为机械信息存储的有前景平台，其中稳定态之间的转变将信息编码为机械比特。虽然已有研究表明可通过施加全局输入将信息写入此类超材料，但现有的读取策略主要依赖视觉检查。在此，我们实验展示了一种具有状态相关刚度的质量-质量双稳态超材料，仅通过边界施加的动态激励即可实现机械信息的写入和读取。我们进一步表明，此类超材料架构既可作为输入幅度的机械传感器，也可作为可重构的波控器件。综合来看，这些结果凸显了双稳态超材料作为集成机械存储、传感和自适应波动操控的多功能平台的多功能性。
英文摘要
Mechanical metamaterials with integrated bistable elements have emerged as promising platforms for mechanical information storage, where transitions between stable states encode information as mechanical bits. While it has been shown that information can be written into such metamaterials by applying global inputs, existing readout strategies rely predominantly on visual inspection. Here, we experimentally demonstrate a mass-in-mass bistable metamaterial with state-dependent stiffness that enables both writing and reading of mechanical information using only boundary-applied dynamic excitations. We further show that such metamaterial architecture functions as both a mechanical sensor of input amplitude and a reconfigurable wave-control device. Together, these results highlight the versatility of bistable metamaterials as multifunctional platforms that integrate mechanical memory, sensing, and adaptive wave manipulation.
Comments8 pages, 5 figures
