期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 14, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.144502
关键词
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资金
- European Research Council under the European Union's Horizon Programme/ERC Grant [637334]
- EPSRC Grant [EP/M50659X/1]
- John Fell Oxford University Press (OUP) Research Fund [132/012]
- Engineering and Physical Sciences Research Council [1500579] Funding Source: researchfish
We demonstrate the passive control of viscous flow in a channel by using an elastic arch embedded in the flow. Depending on the fluid flux, the arch may snap between two states-constricting and unconstricting-that differ in hydraulic conductivity by up to an order of magnitude. We use a combination of experiments at a macroscopic scale and theory to study the constricting and unconstricting states, and determine the critical flux required to transition between them. We show that such a device may be precisely tuned for use in a range of applications, and, in particular, has potential as a passive microfluidic fuse to prevent excessive fluxes in rigid-walled channels.
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