• Complex
  • Title
  • Author
  • Keyword
  • Abstract
  • Scholars
Search

Author:

Dawson, Jack (Dawson, Jack.) | Coaster, Samual (Coaster, Samual.) | Han, Rui (Han, Rui.) | Gausden, Johannes (Gausden, Johannes.) | Liu, Hongzhong (Liu, Hongzhong.) | McHale, Glen (McHale, Glen.) | Chen, Jinju (Chen, Jinju.)

Indexed by:

SCIE Scopus Web of Science

Abstract:

Droplets impacting superhydrophobic surfaces have been extensively studied due to their compelling scientific insights and important industrial applications. In these cases, the commonly reported impact regime was that of complete rebound. This impact regime strongly depends on the nature of the superhydrophobic surface. Here, we report the dynamics of droplets impacting three hydrophobic slippery surfaces, which have fundamental differences in normal liquid adhesion and lateral static and kinetic liquid friction. For an air cushion-like (super)hydrophobic solid surface (Aerogel) with low adhesion and low static and low kinetic friction, complete rebound can start at a very low Weber (We) number (-,1). For slippery liquid-infused porous (SLIP) surfaces with high adhesion and low static and low kinetic friction, complete rebound only occurs at a much higher We number (>5). For a slippery omniphobic covalently attached liquid-like (SOCAL) solid surface, with high adhesion and low static friction similar to SLIPS but higher kinetic friction, complete rebound was not observed, even for a We as high as 200. Furthermore, the droplet ejection volume after impacting the Aerogel surface is 100% across the whole range of We numbers tested compared to other surfaces. In contrast, droplet ejection for SLIPs was only observed consistently when the We was above 5-10. For SOCAL, 100% (or near 100%) ejection volume was not observed even at the highest We number tested here (-,200). This suggests that droplets impacting our (super)hydrophobic Aerogel and SLIPS lose less kinetic energy. These insights into the differences between normal adhesion and lateral friction properties can be used to inform the selection of surface properties to achieve the most desirable droplet impact characteristics to fulfill a wide range of applications, such as deicing, inkjet printing, and microelectronics.

Keyword:

adhesion aerogel droplet impact friction SLIPS SOCAL superhydrophobic

Author Community:

  • [ 1 ] [Dawson, Jack]Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, England
  • [ 2 ] [Coaster, Samual]Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, England
  • [ 3 ] [Han, Rui]Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, England
  • [ 4 ] [Gausden, Johannes]Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, England
  • [ 5 ] [Chen, Jinju]Newcastle Univ, Sch Engn, Newcastle Upon Tyne NE1 7RU, England
  • [ 6 ] [Liu, Hongzhong]Xi An Jiao Tong Univ, Sch Mech Engn, Xian 710054, Peoples R China
  • [ 7 ] [McHale, Glen]Univ Edinburgh, Inst Multiscale Thermofluids, Sch Engn, Edinburgh EH9 3FB, Scotland

Reprint Author's Address:

  • J. Chen;;School of Engineering, Newcastle University, Newcastle Upon Tyne, NE1 7RU, United Kingdom;;email: Jinju.chen@ncl.ac.uk;;

Show more details

Related Keywords:

Source :

ACS APPLIED MATERIALS & INTERFACES

ISSN: 1944-8244

Year: 2022

9 . 2 2 9

JCR@2020

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:7

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 10

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

FAQ| About| Online/Total:935/214750630
Address:XI'AN JIAOTONG UNIVERSITY LIBRARY(No.28, Xianning West Road, Xi'an, Shaanxi Post Code:710049) Contact Us:029-82667865
Copyright:XI'AN JIAOTONG UNIVERSITY LIBRARY Technical Support:Beijing Aegean Software Co., Ltd.