Apparent contact angle of drops on liquid infused surfaces: geometric interpretation

被引：23

作者：

Semprebon, Ciro ^{[1
]}

Sadullah, Muhammad Subkhi ^{[2
]}

McHale, Glen ^{[3
]}

Kusumaatmaja, Halim ^{[4
]}

机构：

[1] Northumbria Univ, Smart Mat & Surfaces Lab, Newcastle Upon Tyne NE1 8ST, Tyne & Wear, England

[2] King Abdullah Univ Sci & Technol KAUST, Water Desalinat & Reuse Ctr WDRC, Biol & Environm Sci & Engn BESE Div, Thuwal 239556900, Saudi Arabia

[3] Univ Edinburgh, Sch Engn, Kings Bldg, Edinburgh EH9 3FB, Midlothian, Scotland

[4] Univ Durham, Dept Phys, Durham DH1 3LE, England

来源：

SOFT MATTER | 2021年 / 17卷 / 42期

基金：

英国工程与自然科学研究理事会;

关键词：

DROPLETS; FRICTION;

D O I：

10.1039/d1sm00704a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We theoretically investigate the apparent contact angle of drops on liquid infused surfaces as a function of the relative size of the wetting ridge and the deposited drop. We provide an intuitive geometrical interpretation whereby the variation in the apparent contact angle is due to the rotation of the Neumann triangle at the lubricant-drop-gas contact line. We also derive linear and quadratic corrections to the apparent contact angle as power series expansion in terms of pressure differences between the lubricant, drop and gas phases. These expressions are much simpler and more compact compared to those previously derived by Semprebon et al. [Soft Matter, 2017, 13, 101-110].

引用

页码：9553 / 9559

页数：8

共 23 条

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[2]

Daniel D, 2017, NAT PHYS, V13, P1020, DOI [10.1038/NPHYS4177, 10.1038/nphys4177]

[3] Evaporation of Sessile Droplets on Slippery Liquid-Infused Porous Surfaces (SLIPS) [J].