| |||||||
| Velocity-Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces | |
| Li PL(李培柳)1,2,4,5; Zhan, Fei6; Wang, Lei1,2,3 | |
| Corresponding Author | Wang, Lei(leiwang@mail.ipc.ac.cn) |
| Source Publication | SMALL (IF:10.856[JCR-2018],9.909[5-Year]) |
| 2023-09-26 | |
| Pages | 8 |
| ISSN | 1613-6810 |
| Abstract | Droplet well-controlled directional motion being an essential function has attracted much interest in academic and industrial applications, such as self-cleaning, micro-/nano-electro-mechanical systems, drug delivery, and heat-transferring. Conventional understanding has it that a droplet impacted on an anisotropic surface tends to bounce along the microstructural direction, which is mainly dictated by surface properties rather than initial conditions. In contrast to previous findings, it demonstrates that the direction of a droplet's rebound on an anisotropic surface can be switched by designing the initial impacting velocity. With an increase in impacting height from 2 to 10 cm, the droplet successively shows a backward, vertical, and forward motion on anisotropic surfaces. Theoretical demonstrations establish that the transition of droplet bouncing on the anisotropic surface is related to its dynamic wettability during impacting process. Characterized by the liquid-solid interaction, it is demonstrated that the contact state at small and large impacting heights induces an opposite resultant force in microstructures. Furthermore, energy balance analysis reveals that the energy conversion efficiency of backward motion is almost three times as that of traditional bouncing. This work, including experiments, theoretical models, and energy balance analysis provides insight view in droplet motions on the anisotropic surfaces and opens a new way for the droplet transport. This study demonstrates that the direction of a droplet's rebound on an anisotropic surface can be switched by designing the initial impacting velocity. The droplet successively shows a backward, vertical, and forward motion on anisotropic surfaces with an increase in impacting height from 2 to 10 cm.image |
| Keyword | anisotropic superhydrophobic surface bouncing motion droplet transport energy conversion impacting velocity |
| DOI | 10.1002/smll.202305568 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001070775200001 |
| WOS Keyword | TRANSPORT |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| Funding Project | This work was supported by the National Natural Science Foundation of China (no. 21805294).[21805294] ; National Natural Science Foundation of China |
| Funding Organization | This work was supported by the National Natural Science Foundation of China (no. 21805294). ; National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Wang, Lei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92982 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Cryo Biomed Engn, Beijing 100190, Peoples R China; 2.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China; 3.Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China; 4.Beijing Inst Technol, Sch Aerosp Engn, Dept Mech, Biomech & Biomat Lab, Beijing 100081, Peoples R China; 5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 6.Shijiazhuang Tiedao Univ, Sch Elect & Elect Engn, Shijiazhuang 050043, Peoples R China |
| Recommended Citation GB/T 7714 | Li PL,Zhan, Fei,Wang, Lei. Velocity-Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces[J]. SMALL,2023:8.Rp_Au:Wang, Lei |
| APA | 李培柳,Zhan, Fei,&Wang, Lei.(2023).Velocity-Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces.SMALL,8. |
| MLA | 李培柳,et al."Velocity-Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces".SMALL (2023):8. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2023Fa019.pdf（2605KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment