镓基室温液态金属复合电场运动特性  

Motion characteristics of compound electric field of gallium-based room temperature liquid metal

作　　者：张利[1] 陈强 李研彪[1] ZHANG Li;CHEN Qiang;LI Yanbiao(College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310032)

机构地区：[1]浙江工业大学机械工程学院,杭州310032

出　　处：《高技术通讯》2022年第9期980-989,共10页Chinese High Technology Letters

基　　金：国家自然科学基金(51575493);浙江省基础公益研究计划(LGG19E050025)资助项目。

摘　　要：镓基室温液态金属作为一种新兴的功能材料在各个领域引起了广泛的关注。利用电场驱动液态金属运动是一种简便方法,但目前对于复合电场作用下液态金属的运动特性研究较少。本文基于表面张力与电双层理论建立了液态金属驱动力模型;通过实验得到了不同液态金属颗粒大小、电极距离、电解液浓度下的阈值电压及一定范围内四者的线性回归模型;开展了水平和竖直自由空间的复杂电场作用下液态金属颗粒运动仿真和实验研究。结果表明,在一定范围内阈值电压与颗粒大小和电解液浓度成负相关,与电极距离成正相关,液态金属在复合电场中的运动轨迹与电场分布有关,通过电场的布置可实现对液态金属运动轨迹和速度的控制。As a new functional material,gallium-based room temperature liquid metal has been widely concerned in vari-ous fields.It is a simple method to drive liquid metal to move by electric field,but there are few researches on the movement characteristics of liquid metal under the action of compound electric field.In this paper,the driving force model of liquid metal is established based on the theory of surface tension and electric double layer.The threshold voltages with different liquid metal particle size,electrode distance and electrolyte concentration are got by experiments,besides,the linear regression model of them in a certain range is obtained.Moreover,the simula-tion and experimental research on the movement of liquid metal particles under the action of complex electric field in horizontal and vertical free space are carried out.The results show that within a certain range,the threshold volt-age is negatively correlated with particle size and electrolyte concentration,and positively correlated with electrode distance.The movement track of liquid metal in composite electric field is related to the distribution of electric field.Thus,the movement track and speed of liquid metal can be controlled by the arrangement of electric field.

关 键 词：镓基液态金属 复合电场 运动控制 表面张力 阈值电压 

分 类 号：TG14[一般工业技术—材料科学与工程]