文献详情
Cross Interaction Drives Stratification in Drying Film of Binary Colloidal Mixtures
文献类型期刊
作者Zhou, Jiajia[1];Jiang, Ying[2];Doi, Masao[3]
机构
通讯作者Zhou, JJ (reprint author), Beihang Univ, Sch Chem & Environm, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ, Beijing 100191, Peoples R China.; Zhou, JJ (reprint author), Beihang Univ, Ctr Soft Matter Phys & Its Applicat, Beijing 100191, Peoples R China.
来源信息年:2017  卷:118  期:10  
期刊信息PHYSICAL REVIEW LETTERS影响因子和分区  ISSN:0031-9007
摘要When a liquid film of a colloidal solution consisting of particles of different sizes is dried on a substrate, the colloids often stratify, where smaller colloids are laid upon larger colloids. This phenomenon is counterintuitive because larger colloids which have a smaller diffusion constant, are expected to remain near the surface during the drying process, leaving a layer of larger colloids on top of smaller colloids. Here we show that the phenomenon is caused by the interaction between the colloids, and can be explained by a diffusion model accounting for the interaction between the colloids. By studying the evolution equations both numerically and analytically, we derive the condition at which the stratified structures are obtained.
收录情况SCIE(WOS:000396047400012)  EI(20171103441330)  
所属部门化学与环境学院
DOI10.1103/PhysRevLett.118.108002
学科物理:综合
人气指数171
浏览次数171
基金National Natural Science Foundation of China (NSFC) [21434001, 21504004, 21574006, 21622401]; Chinese Central Government via the Thousand Talents Program
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