肥皂膜过滤器的性能探究  

Probe into the performance of soap membrane filter

作　　者：马舟阳 关舟 赵述敏[3] 方爱平 赵迪[1,3,4] MA Zhou-yang;GUAN Zhou;ZHAO Shu-min;FANG Ai-ping;ZHAO Di(School of Physics,Xi an Jiaotong University,Xi an,Shaanxi 710049,China;School of Electrical Engineering,Xi an Jiaotong University,Xi an,Shaanxi 710049,China;Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter,Xi an,Shaanxi 710049,China;Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices,Xi an,Shaanxi 710049,China)

机构地区：[1]西安交通大学物理学院,陕西西安710049 [2]西安交通大学电气学院,陕西西安710049 [3]西安交通大学物理学院物质非平衡合成与调控教育部重点实验室,陕西西安710049 [4]西安交通大学物理学院陕西省量子信息与光电量子器件重点实验室,陕西西安710049

出　　处：《大学物理》2022年第5期80-85,共6页College Physics

基　　金：教育部高等学校教学研究项目(DJZW201911xb);2021年度高等学校热学课程教学研究项目(JZW-21-RX-06);中国高等教育学会2020年“基于一流课程建设的教学改革与实践研究”专项课题(2020JXD02)资助。

摘　　要：物质分离是很多医疗和工业的核心技术.传统的固体过滤膜可以允许小于临界尺寸的粒子通过而阻挡大的粒子透过.然而,允许大粒子通过而小粒子停留的膜却很难人工制造.Birgitt Boschitsch Stogin、Luke Gockowski等人证明了完全由液体组成的液膜可以被设计成保留小于临界尺寸粒子而透过大尺寸粒子的过滤膜.基于上述研究,本文在液膜过滤器模型基础上进行解析推导,分析讨论了液膜的临界透过条件,并在实验中得到验证.同时,本文通过调节液膜表面张力系数实现了对粒子速度的筛选.Material separation is the core technology of many medical and industrial applications.Traditional solid filtration membranes can allow particles smaller than the critical size to pass through the membrane while blocking the passage of larger particles.However, membranes that allow large particles to pass through while small particles stay are difficult to make artificially.Stogin, Gockowski, et al(in Sci.Adv.2018,4:3276) proved that a liquid membrane composed entirely of liquid can be designed to retain particles smaller than the critical size and permeate large-size particles.Based on the above research, this article analyzes and derives based on the liquid membrane filter model, analyzes and discusses the critical permeability conditions of the liquid membrane, and is verified in the experiment.At the same time, this article realizes the screening of particle velocity by adjusting the surface tension coefficient of the liquid membrane.

关 键 词：液膜过滤器 临界透过条件 肥皂膜 

分 类 号：O4-1[理学—物理]