变换微流体实验：无超材料的隐形流动和输运
Experiments on transformation microfluidics: cloaking flow and transport without metamaterials
摘要：
隐身效应现在几乎在物理学的每一个领域都得到了确认。在所有情况下，衬底雕刻的超材料使隐藏体积的重塑成为不可能。在流体中，认识到达朗贝尔悖论本身描述了一个流体动力学的隐形机制，我们提出了一个框架，并在实验上表征隐形流动和运输同时在一个可重塑的流体体积。进一步研究了微流控斗篷作为开放空间扩散过滤器（O-过滤器）的特性。它们揭示了与微流体中的经典H-过滤器的强拓扑相似性。
英文摘要：
Cloaking effects have now been identified in almost every field of physics. In all cases, substrate-carved metamaterials make the reshaping of the concealed volume impossible. In fluids, recognizing that d'Alembert's paradox describes in itself a hydrodynamic cloaking mechanism, we propose and characterize experimentally a framework to cloak both flow and transport simultaneously within a reshapable fluid volume. The properties of microfluidic cloaks as open-space diffusion filters (O-Filters) are further investigated. They reveal a strong topological analogy with classical H-Filters in microfluidics.
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