超润滑表面液滴在温度及力场作用下的钉扎/滑动行为及内在机制  

Pinning/sliding behaviors and underlying mechanism of water droplets on ultra-slippery surfaces under temperature and force fields stimuli

作　　者：顾剑锋 黄玖辉 李大宇 刘霖 朱苏皖 肖轶[4] GU Jianfeng;HUANG Jiuhui;LI Dayu;LIU Lin;ZHU Suwan;XIAO Yi(College of Electromechanical and Traffic Engineering,Nantong Vocational College of Science and Technology,Nantong 226000,China;School of Instrument Science and Opto-electronic Engineering,Hefei University of Technology,Hefei 230039,China;College of Engineering Science,University of Science and Technology of China,Hefei 230027,China;College of Mechanical Engineering,Nantong Vocational University,Nantong 226000,China)

机构地区：[1]南通科技职业学院机电与交通工程学院,南通226000 [2]合肥工业大学仪器科学与光电工程学院,合肥230009 [3]中国科学技术大学工程科学学院,合肥230027 [4]南通职业大学机械工程学院,南通226000

出　　处：《复合材料学报》2023年第4期2209-2215,共7页Acta Materiae Compositae Sinica

基　　金：中央高校基本科研基金(WK2090000035,WK2480000005);江苏省高校“青蓝工程”项目(2019);江苏省高校自然科学基金面上项目(18KJB430022);江苏省自然科学基金面上项目(BK20191209);江苏省优秀科技创新团队项目(2021-52)。

摘　　要：近年来,刺激响应型液体注入式超润滑多孔表面(SLIPS)在微流体操控领域受到广泛关注。然而,大多数报道的刺激响应型SLIPS都是在室温或相对高温下实现液滴操控,难以满足更广泛的应用场景。本文利用飞秒激光正交扫描方法制备了一种双重响应超润滑表面(DRSS)。通过温度场和力场的共同作用,实现了微液滴在DRSS上滑动/钉扎行为的动态控制。系统研究了润滑油注入量、沟槽深度和间距等实验参数对液滴临界滑动体积的影响规律,揭示了液滴钉扎/滑动动力学机制。这种双物理场调控下的超润滑表面液滴操控方法有望用于芯片实验室、微流体反应器等相关领域。In recent years,stimuli-responsive slippery liquid-infused porous surfaces(SLIPSs)have attracted widespread attention in the field of microfluidic manipulation.However,most reported responsive SLIPSs function under a single stimulus,which are challenging to satisfy the generalized application scenarios.Here,a kind of dualresponsive slippery surface(DRSS)is fabricated through femtosecond laser cross-scanning method.Relying on the synergic action of temperature and force field,the sliding/pinning behaviors of water droplets on DRSS can be dynamically controlled.The impact of diverse parameters on the critical sliding volume of droplets is systematically investigated,including lubricant infusion amount,groove depth and spacing.The dynamic mechanism of droplet sliding/pinning behaviors is revealed.This kind of DRSS could be used in the related fields such as lab-on-a-chip and microfluidic reactors.

关 键 词：飞秒激光 刺激响应 超润滑表面 液滴操控 微流控 

分 类 号：O59[理学—应用物理]