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

Ciro Semprebon; Muhammad Subkhi Sadullah; Glen McHale; Halim Kusumaatmaja

doi:10.1039/d1sm00704a

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

Ciro Semprebon, Muhammad Subkhi Sadullah, Glen McHale, Halim Kusumaatmaja

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

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].

Original language	English (US)
Journal	Soft Matter
DOIs	https://doi.org/10.1039/d1sm00704a
State	Published - Aug 19 2021

Bibliographical note

KAUST Repository Item: Exported on 2021-09-16
Acknowledged KAUST grant number(s): BAS/1/1070-01-01
Acknowledgements: CS acknowledges support from Northumbria University through the Vice-Chancellor’s Fellowship Programme and EPSRC (EP/S036857/1) for funding. MSS is supported by funding from King Abdullah University of Science and Technology (KAUST) under the award number BAS/1/1070-01-01. HK acknowledges funding from EPSRC (EP/V034154/1).

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics

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10.1039/d1sm00704a

https://repository.kaust.edu.sa/bitstream/10754/671213/1/d1sm00704a.pdf

Cite this

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title = "Apparent contact angle of drops on liquid infused surfaces: geometric interpretation",

abstract = "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].",

author = "Ciro Semprebon and Sadullah, {Muhammad Subkhi} and Glen McHale and Halim Kusumaatmaja",

note = "KAUST Repository Item: Exported on 2021-09-16 Acknowledged KAUST grant number(s): BAS/1/1070-01-01 Acknowledgements: CS acknowledges support from Northumbria University through the Vice-Chancellor{\textquoteright}s Fellowship Programme and EPSRC (EP/S036857/1) for funding. MSS is supported by funding from King Abdullah University of Science and Technology (KAUST) under the award number BAS/1/1070-01-01. HK acknowledges funding from EPSRC (EP/V034154/1).",

year = "2021",

month = aug,

day = "19",

doi = "10.1039/d1sm00704a",

language = "English (US)",

journal = "Soft Matter",

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AU - Semprebon, Ciro

AU - Sadullah, Muhammad Subkhi

AU - McHale, Glen

AU - Kusumaatmaja, Halim

N1 - KAUST Repository Item: Exported on 2021-09-16 Acknowledged KAUST grant number(s): BAS/1/1070-01-01 Acknowledgements: CS acknowledges support from Northumbria University through the Vice-Chancellor’s Fellowship Programme and EPSRC (EP/S036857/1) for funding. MSS is supported by funding from King Abdullah University of Science and Technology (KAUST) under the award number BAS/1/1070-01-01. HK acknowledges funding from EPSRC (EP/V034154/1).

PY - 2021/8/19

Y1 - 2021/8/19

N2 - 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].

AB - 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].

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UR - http://xlink.rsc.org/?DOI=D1SM00704A

U2 - 10.1039/d1sm00704a

DO - 10.1039/d1sm00704a

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SN - 1744-6848

JO - Soft Matter

JF - Soft Matter

ER -

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

Abstract

Bibliographical note

ASJC Scopus subject areas

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