Velocity-Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces
文献类型：期刊论文
| 作者 | Li PL(李培柳)2,3,5,6; Zhan, Fei1; Wang, Lei4,5,6 |
| 刊名 | SMALL
 |
| 出版日期 | 2023-09-26 |
| 页码 | 8 |
| ISSN号 | 1613-6810 |
| 关键词 | anisotropic superhydrophobic surface bouncing motion droplet transport energy conversion impacting velocity |
| DOI | 10.1002/smll.202305568 |
| 通讯作者 | Wang, Lei(leiwang@mail.ipc.ac.cn) |
| 英文摘要 | 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 |
| 分类号 | 一类 |
| WOS关键词 | TRANSPORT |
| 资助项目 | This work was supported by the National Natural Science Foundation of China (no. 21805294).[21805294] ; National Natural Science Foundation of China |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001070775200001 |
| 资助机构 | This work was supported by the National Natural Science Foundation of China (no. 21805294). ; National Natural Science Foundation of China |
| 其他责任者 | Wang, Lei |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/92981]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Shijiazhuang Tiedao Univ, Sch Elect & Elect Engn, Shijiazhuang 050043, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Beijing Inst Technol, Sch Aerosp Engn, Dept Mech, Biomech & Biomat Lab, Beijing 100081, Peoples R China; 4.Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China; 5.Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China; 6.Chinese Acad Sci, Tech Inst Phys & Chem, Beijing Key Lab Cryo Biomed Engn, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li PL,Zhan, Fei,Wang, Lei. Velocity-Switched Droplet Rebound Direction on Anisotropic Superhydrophobic Surfaces[J]. SMALL,2023:8. |
| 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. |
入库方式： OAI收割
来源：力学研究所
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