具有泊松比和带隙形成可控转变的微尺度力学超材料
Micro-scale Mechanical Metamaterial with a Controllable Transition in the Poisson's Ratio and Band Gap Formation
AI总结：
本文提出一种新型微尺度力学超材料，可通过磁场远程控制其在强烈拉胀与高度正泊松比构型间转变，并同步调控声子带隙形成，为生物医学和防护设备等应用提供了可调特性。
摘要：
在不重建结构的情况下显著改变其力学和波传播特性，一直是力学超材料领域的主要挑战之一。这源于其巨大的吸引力，尤其是在微尺度系统中，这种可调行为可能为从生物医学到防护设备等应用提供广阔前景。本文提出了一种新型微尺度力学超材料，它能够从一种构型转变为另一种构型：其中一种构型具有非常负的泊松比，对应于强烈的拉胀性；另一种构型则具有高度正的泊松比。同时，声子带隙的形成也可以被控制，这在减振器和传感器的设计中非常有用。最后，实验表明，由于适当分布的磁性包含物，可以通过施加磁场远程诱发并控制系统的重构，从而导致其特性发生改变。
英文摘要：
The ability to change significantly mechanical and wave propagation properties of a structure without rebuilding it has been one of the main challenges in the field of mechanical metamaterials. This stems from the enormous appeal that, especially in the case of micro-scale systems, such tunable behavior may offer from the perspective of applications ranging from biomedical to protective devices. In this work, a novel micro-scale mechanical metamaterial is proposed that can undergo a transition from one type of configuration to another, with one configuration having a very negative Poisson's ratio, corresponding to strong auxeticity, and the other having a highly positive Poisson's ratio. The formation of phononic band gaps, at the same time, can be controlled, which can be very useful in the design of vibration dampers and sensors. Finally, it is shown experimentally that reconfiguration of the system, leading to a change in its properties, can be induced and controlled remotely through application of a magnetic field, thanks to appropriately distributed magnetic inclusions.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
