Topological acoustofluidics

Shuaiguo Zhao

doi:10.1038/s41563-025-02169-y

2025-03-21

DOI：10.1038/s41563-025-02169-y

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自旋、谷和晶格自由度的复杂相互作用使自然材料能够产生奇异的拓扑现象。拓扑波材料与流体动力学的相互作用可能为可视化拓扑物理和非常规操控生物粒子提供有前景的机会。这里我们提出拓扑声流控芯片，以阐述弹性谷自旋与非线性流体动力学的复杂相互作用。我们创建了谷流涡旋和手性旋转图案，用于反向免疫粒子传输。使用示踪粒子，我们观察到由于弹性自旋密度增加而产生的顺时针和逆时针谷涡旋阵列。此外，我们在流体中发现奇异的拓扑压力阱，形成纳米级捕获场以操控DNA分子。我们还发现边缘态带宽的调制幅度达到93.2%，其取决于衬底晶体结构的取向。本研究为揭示拓扑声流控现象和可视化弹性谷自旋奠定了基础，揭示了拓扑材料在生命科学中的应用潜力。

Keyword:

GRAPHENE

VORTICES

期刊

Nature Materials

IF:

38.5

论文数:

6.8K

被引数:

11.5W

机构

暂无机构信息

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