Topological soliton states, existing in the topological structures with edge defect or interface defect, are usually studied under steady state. Here, we experimentally observe the dynamic processes of the generation and the extinction of such soliton states in the Su–Schrieffer–Heeger model. The different topological structures are implemented on a programmable nanomechanical lattice, consisting of eight adjacent string resonators which are parametrically coupled by manipulation voltages. Moreover, the beating and localization behaviors at different topological interfaces are also observed in the same device. These results explicitly exhibit the dynamic processes of topological soliton states, which reveal real potential toward integrated multifunctional topological materials.

中文翻译：

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可编程纳米力学晶格中拓扑孤子态的动态观察

通常在稳态下研究存在于具有边缘缺陷或界面缺陷的拓扑结构中的拓扑孤子状态。在这里，我们通过实验观察了Su–Schrieffer–Heeger模型中此类孤子状态的生成和消亡的动态过程。不同的拓扑结构在可编程的纳米机械网格上实现，该网格由八个相邻的弦谐振器组成，这些谐振器通过操作电压进行参数耦合。此外，在同一设备中还观察到了在不同拓扑界面上的跳动和定位行为。这些结果明确显示了拓扑孤子态的动态过程，揭示了集成多功能拓扑材料的实际潜力。