Molecular dynamics study on evaporation modes of nanodroplets at rough interfaces

被引：0
作者：
Bi L. [1 ]
Liu B. [1 ]
Hu H. [1 ]
Zeng T. [1 ]
Li Z. [1 ]
Song J. [1 ]
Wu H. [1 ]
机构：
[1] Tianjin Key Laboratory of Refrigeration Technology, Tianjin University of Commerce, Tianjin
来源：
Huagong Xuebao/CIESC Journal | 2023年 / 74卷
关键词：
droplet; evaporation; interface; molecular dynamics; ratio of contact area;
D O I：
10.11949/0438-1157.20221554
中图分类号：
学科分类号：
摘要：
In this paper, the evaporation modes of nanodroplet on rough substrates are studied by molecular dynamics method, and the influence of ratio of contact area (RCA) between the nanodroplets and the rough interfaces on the contact radius and contact angle during the evaporation process of nanodroplets is discussed. The roughness of the interfaces is achieved by textured patterns based on the Wenzel wetting model. The results show that, in equilibrium, compared with the ideal smooth substrate, when the contact area ratio is smaller, the contact angle of the nanodroplet increases significantly (RCA = 33.3%, θ = 106°), while when the roughness of the substrates is larger, this phenomenon is not obvious (RCA = 50%, θ = 81°; RCA = 66.6%, θ = 85°). In the evaporation process, when RCA = 33.3%, the evaporation mode of nanodroplet is mixed mode, when RCA = 50%, the evaporation mode of nanodroplet is constant contact radius mode (CCR mode), and when RCA = 66.6%, the evaporation mode of nanodroplet is constant contact angle mode (CCA mode). © 2023 Chemical Industry Press. All rights reserved.
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页码：172 / 178
页数：6
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