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Evaporation of saline colloidal droplet and deposition pattern*
Sun HH(孙弘辉)1,3; Li WB(李伟斌)1,3; Ji WJ(纪文杰)1,2; Dai GL(戴国亮)1,3; Huan Y(郇勇)2,3; Wang YR(王育人)1,3; Lan D(蓝鼎)1,3
Source PublicationCHINESE PHYSICS B
2020
Volume29Issue:1Pages:7
ISSN1674-1056
Abstract

The dynamic process of the evaporation and the desiccation of sessile saline colloidal droplets, and their final deposition are investigated. During the evaporation, the movement of the colloidal particles shows a strong dependence on the salt concentration and the droplet shape. The final deposition pattern indicates a weakened coffee-ring effect in this mixed droplet system. The microscopic observation reveals that as evaporation proceeds, the particle motion trail is affected by the salt concentration of the droplet boundary. The Marangoni flow, which is induced by surface tension gradient originating from the local evaporative peripheral salt enrichment, suppresses the compensation flow towards the contact line of the droplet. The inhomogeneous density and concentration field induced by evaporation or crystallization can be the major reason for various micro-flows. At last stage, the distribution and crystallization of NaCl are affected by the colloidal particles during the drying of the residual liquid film.

Keywordsaline droplet evaporation deposition pattern disease diagnosis
DOI10.1088/1674-1056/ab5782
Indexed BySCI ; EI
Language英语
WOS IDWOS:000508556100001
WOS KeywordSESSILE
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
Funding ProjectNational Natural Science Foundation of China[11472275] ; National Natural Science Foundation of China[U1738118] ; Chinese Academy of Sciences Key Technology Talent Program ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040301]
Funding OrganizationNational Natural Science Foundation of China ; Chinese Academy of Sciences Key Technology Talent Program ; Strategic Priority Research Program of the Chinese Academy of Sciences
DepartmentNML空间材料物理力学
ClassificationQ3
Ranking1
ContributorLan, Ding
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/81333
Collection国家微重力实验室
非线性力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Beijing 100190, Peoples R China;
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China;
3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Sun HH,Li WB,Ji WJ,et al. Evaporation of saline colloidal droplet and deposition pattern*[J]. CHINESE PHYSICS B,2020,29(1):7.
APA Sun HH.,Li WB.,Ji WJ.,Dai GL.,Huan Y.,...&Lan D.(2020).Evaporation of saline colloidal droplet and deposition pattern*.CHINESE PHYSICS B,29(1),7.
MLA Sun HH,et al."Evaporation of saline colloidal droplet and deposition pattern*".CHINESE PHYSICS B 29.1(2020):7.
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