Spatio-temporal maneuvering of impacting drops

Han, Xing1,2; Tang, Xin1,2; Zhao, Haibo1,2,3; Li, Wei1,2; Li, Jiaqian1,2; Wang, Liqiu1,2

2021-09-01

10.1039/d1mh00836f

Materials Horizons   影响因子和分区

2051-6347

2051-6355

Controlling impacting drops on nonwetting surfaces is desired in multifarious processes. Efforts have been made to solely spatially control the drop movement after the impact or solely temporally reduce liquid-solid contact via surface design. We present a fin-stripe nonwetting surface that enables spatial offset maximization and temporal contact minimization simultaneously, just via structure design without the need for external energies. The wetting stripe provides a large wettability gradient for lateral movement, while the macroscale nonwetting fin restricts the drop movement direction and confines drop spreading for contact time reduction. The fin-stripe surface can decrease the contact time by roughly 30% and provide a normalized lateral distance of roughly 20, an order of magnitude larger than the reported values. Our surface enables effective spatio-temporal maneuvering of impacting drops, essential for various applications that involve liquid transport.

SCI ; EI

英语

其他

Research Grants Council of Hong Kong[17205421,17204420,17210319,17204718,"C1006-20WF"]

Chemistry ; Materials Science

Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary

WOS:000700161800001

ROYAL SOC CHEMISTRY

20214711184866

Fins (heat exchange) ; Wetting

Heat Exchange Equipment and Components:616.1

Web of Science

1.Univ Hong Kong, Dept Mech Engn, Hong Kong, Peoples R China
2.Univ Hong Kong, Zhejiang Inst Res & Innovat, Hangzhou 311300, Zhejiang, Peoples R China
3.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Guangdong, Peoples R China

Han, Xing,Tang, Xin,Zhao, Haibo,et al. Spatio-temporal maneuvering of impacting drops[J]. Materials Horizons,2021,8:3133-3140.

Han, Xing,Tang, Xin,Zhao, Haibo,Li, Wei,Li, Jiaqian,&Wang, Liqiu.(2021).Spatio-temporal maneuvering of impacting drops.Materials Horizons,8,3133-3140.

Han, Xing,et al."Spatio-temporal maneuvering of impacting drops".Materials Horizons 8(2021):3133-3140.