Surface-tension-confined droplet microfluidics  

作　　者：陈新莲 伍罕 巫金波 

机构地区：[1]Materials Genome Institute, Shanghai University [2]College of Science, Shanghai University

出　　处：《Chinese Physics B》2018年第2期29-42,共14页中国物理B（英文版）

基　　金：Project supported by the Shanghai Pujiang Program(Grant No.16PJ1403200);the Research Grant(Grant No.16DZ2260601)from Science and Technology Commission of Shanghai Municipality

摘　　要：This article is a concise overview about the developing microfluidic systems named surface-tension-confined droplet microfluidics （STORMs）. Different from traditional complexed droplet microfluidics which generated and confined the droplets by three-dimensional （3D） poly（dimethylsiloxane）-based microchannels, STORM systems provide two- dimensional （2D） platforms for control of droplets. STORM devices utilize surface energy, with methods such as surface chemical modification and mechanical processing, to control the movement of fluid droplets. Various STORM devices have been readily prepared, with distinct advantages over conventional droplet microfluidics, which generated and confined the droplets by 3D poly（dimethylsiloxane）-based microchannels, such as significant reduction of energy consumption neces- sary for device operation, facile or even direct introduction of droplets onto patterned surface without external driving force such as a micropump, thus increased frequency or efficiency of droplets generation of specific STORM device, among others. Thus, STORM devices can be excellent alternatives for majority areas in droplet microfluidics and irreplaceable choices in certain fields by contrast. In this review, fabrication methods or strategies, manipulation methods or mechanisms, and main applications of STORM devices are introduced.This article is a concise overview about the developing microfluidic systems named surface-tension-confined droplet microfluidics （STORMs）. Different from traditional complexed droplet microfluidics which generated and confined the droplets by three-dimensional （3D） poly（dimethylsiloxane）-based microchannels, STORM systems provide two- dimensional （2D） platforms for control of droplets. STORM devices utilize surface energy, with methods such as surface chemical modification and mechanical processing, to control the movement of fluid droplets. Various STORM devices have been readily prepared, with distinct advantages over conventional droplet microfluidics, which generated and confined the droplets by 3D poly（dimethylsiloxane）-based microchannels, such as significant reduction of energy consumption neces- sary for device operation, facile or even direct introduction of droplets onto patterned surface without external driving force such as a micropump, thus increased frequency or efficiency of droplets generation of specific STORM device, among others. Thus, STORM devices can be excellent alternatives for majority areas in droplet microfluidics and irreplaceable choices in certain fields by contrast. In this review, fabrication methods or strategies, manipulation methods or mechanisms, and main applications of STORM devices are introduced.

关 键 词：surface-tension-confined DROPLET MICROFLUIDICS MICROPATTERNING WETTABILITY 

分 类 号：O35[理学—流体力学]