In this work, it is shown experimentally for the first time that chiral mechanical metamaterials can induce their own global rotational motion, i.e. the rotation of the entire system with respect to its centre of mass, without any external forces acting on it. To better understand this effect, which is very different from other types of deformations studied in the literature and offers an insight into what aspects of dynamic behaviour of mechanical metamaterials are yet to be discovered, a number of different prototypes of chiral systems are analysed where it is shown what type of a design allows to maximise the extent of the exhibited rotation. In addition to this, the theoretical model corresponding to computer simulations utilising the Molecular Dynamics approach is proposed and used to establish the hypothetical limit of the considered phenomenon. It is also discussed what are the parameters that can be used in order to fine-tune the extent of the global rotation exhibited b...

中文翻译：

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手性机械超材料的新型旋转

在这项工作中，首次通过实验证明，手性机械超材料可以诱导其自身的整体旋转运动，即整个系统相对于其质心的旋转，而没有任何外力作用于其上。为了更好地理解这种效应，这种效应与文献中研究的其他类型的变形有很大不同，并提供了关于尚未发现机械超材料的动态行为的哪些方面的见解，在此分析了许多不同的手性系统原型示出了什么类型的设计允许最大化所展示的旋转程度。除此之外，提出了与利用分子动力学方法进行计算机模拟的理论模型，并将其用于建立所考虑现象的假设极限。还讨论了可以使用哪些参数来微调所显示的全局旋转程度。