Programmable curvilinear self-propelling of droplets without preset channels  

作　　者：Shile Feng Yongping Hou Yongmei Zheng 

机构地区：[1]Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education,Institution of Chemistry,Beihang University(BUAA),Beijing,China [2]State Key Laboratory of High-performance Precision Manufacturing,Dalian University of Technology,Dalian,China

出　　处：《Droplet》2024年第4期21-28,共8页液滴（英文）

基　　金：supported by the National Natural Science Foundation of China(22275008);the Aeronautical Science Foundation of China(2020Z030051001);the National High-Level Talents Special Support Program,the Outstanding Youth Natural Science Foundation of Liaoning Province(2022-YQ-11);the Liaoning Revitalization Talents Program(XLYC2203049);the National Natural Science Foundation of China(52005075);Dalian Youth Science and Technology Star Project.

摘　　要：Curvilinear self-propelling of droplets has attracted great interest in the past few decades due to their irreplaceable roles in many areas.Conventional understanding is that a droplet moves only along a preset channel formed by morphology or chemi-cal components.Achieving programmable curvilinear droplet motion independent of a preset channel remains greatly challenging.Here,we report a programmable curvi-linear self-propelling of droplets(circle,divergence,and convergence)based on the collaboration of the curvilinear wetting gradient and the Leidenfrost effect.This design achieves motion trajectory in a well-controlled manner as well as high velocity and long distance of droplet transport independent of the preset channel.Moreover,the motion behaviors of droplets could be predicted accurately by theoretic simulation.We envi-sion that our unique design could manifest extensive practical applications in fluidic devices,liquid transport,and heat transfer systems.

关 键 词：effect curvilinear replace 

分 类 号：O35[理学—流体力学]