| Moving Behavior of Nanodroplets on Wedge-Shaped Functional Surfaces | |
Wang S(王帅); Wang C(王超) ; Peng ZL(彭志龙); Chen SH(陈少华)
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| Source Publication | JOURNAL OF PHYSICAL CHEMISTRY C
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| 2019-01-24 | |
| Volume | 123Issue:3Pages:1798-1805 |
| ISSN | 1932-7447 |
| Abstract | Surface functionalization has important application prospects in many aspects, for example, anti-drag, anti-pollution, anti-icing, self-cleaning, reversible adhesion, water collection, and so forth. Recently, a new technique of functional surface was proposed, in which a droplet can be activated to move from the narrow end of a wedge-shaped hydrophilic region imbedded in a hydrophobic surface to the wide end. Systematic molecular dynamics (MD) simulations and theoretical analysis are carried out in this paper in order to understand the motion mechanism, and more systematic designs for advanced functional surfaces are further proposed. It is found that the potential energy of the droplet decreases continuously as a function of distance when the droplet moves from the narrow end of the wedge-shaped track to the wide end and the corresponding potential energy achieves the minimum when the droplet completely enters the hydrophilic region. Effects of the wedge angle of hydrophilic area and the size of the droplet on the moving behavior are systematically investigated. It is interesting to find that both factors would show significant influence on the moving behavior of droplets, which is well consistent with the experimental observations. Theoretical analysis is further carried out, where driving force of droplet transport is well achieved. All the MD simulation results and experimental observations can be well explained by the nonlinearly changed driving force. Finally, several new designs of functional surfaces for controlling droplet transport, including droplet turning, pinning, accelerating, gathering, and moving path selection, are suggested, the feasibilities of which are further verified and discussed. The results in this paper would be helpful for the design of advanced functional surfaces to manipulate droplets in real applications. |
| DOI | 10.1021/acs.jpcc.8b09831 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000457067500031 |
| WOS Keyword | SELF-CLEANING SURFACES ; GRADIENT SURFACES ; WATER DROPLETS ; MOTION ; WETTABILITY ; GRAPHENE |
| WOS Research Area | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| WOS Subject | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| Funding Organization | NSFC [11532013, 11872114, 11602270] |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Chen, SH ; Wang, C |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/78432 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.{Wang, Shuai、Peng, Zhilong、Chen, Shaohua} Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China 2.{Wang, Shuai、Peng, Zhilong、Chen, Shaohua} Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China 3.{Wang, Chao} Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Wang S,Wang C,Peng ZL,et al. Moving Behavior of Nanodroplets on Wedge-Shaped Functional Surfaces[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123,3,:1798-1805.Rp_Au:Chen, SH, Wang, C |
| APA | 王帅,王超,彭志龙,&陈少华.(2019).Moving Behavior of Nanodroplets on Wedge-Shaped Functional Surfaces.JOURNAL OF PHYSICAL CHEMISTRY C,123(3),1798-1805. |
| MLA | 王帅,et al."Moving Behavior of Nanodroplets on Wedge-Shaped Functional Surfaces".JOURNAL OF PHYSICAL CHEMISTRY C 123.3(2019):1798-1805. |
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| Jp2019005.pdf（8557KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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