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Quick Liquid Propagation on a Linear Array of Micropillars
Lizhong Mu1,2, Harunori N Yoshikawa3, Farzam Zoueshtiagh4
1Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy and Power Engineering , Dalian University of Technology , 2 Linggong Road , Ganjinzi District, Dalian 116024 , China.
Abstract:
The wetting process of a high energy surface can be accelerated locally through the capillary interaction of a liquid advancing front with a micro-object introduced to the surface (Mu et al., J. Fluid Mech, 2017, 830, R1). We demonstrate that a linear array of micropillars embedded in a fully wettable substrate can produce quick propagation of liquid along the array. It is observed that multiple interactions of a liquid front with pillars can induce the motion of liquid a hundred times faster than in the absence of pillars.
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