Complete Spreading of Liquid Droplets on Heterogeneous Substrates: Simulations and Experiments

Science Direct Working Paper No S1574-0331(04)70337-9

21 Pages Posted: 31 May 2017 Last revised: 16 Dec 2017

See all articles by M. Voué

M. Voué

Materia Nova

S. Semal

Université de Mons-Hainaut - Centre de Recherche en Mod´elisation Moleculaire

C. Bauthier

Université de Mons-Hainaut - Centre de Recherche en Mod´elisation Moleculaire

J.J. Vanden Eynde

Université de Mons-Hainaut - Laboratoire de Chimie Organique

J. De Coninck

Université de Mons-Hainaut - Centre de Recherche en Mod´elisation Moleculaire

Date Written: September 2000

Abstract

We report the results of molecular dynamics (MD) simulations probing the spreading of a chain-like liquid droplet on heterogeneous substrates. A comparison is carried out between patterned and random substrates made of A and B materials. The simulations show that the spreading rate of the liquid droplet is a monotonous function of the heterogeneity concentration. The spreading of low molecular weight silicon oils (PDMS) on heterogeneous substrates has also been experimentally studied using high resolution spectroscopic ellipsometry. Two types of substrates were investigated : partially OTS-grafted silicon wafers and silicon wafers whose coating was a two-component grafted layer (UTS and uUTS). In the former case, the reaction time was varied to change the heterogeneity concentration at the wafer surface, while in the later, the relative concentrations of the coating constituents in the grafting solution were modified. The experimental results are in close agreement with the theoretical predictions of the MD simulations.

Keywords: Physical Chemistry > Computational Chemistry, physchem/0009001

Suggested Citation

Voué, M. and Semal, S. and Bauthier, C. and Vanden Eynde, J.J. and De Coninck, J., Complete Spreading of Liquid Droplets on Heterogeneous Substrates: Simulations and Experiments (September 2000). Chemistry Preprint Archive Vol. 2000, Issue 9, pp 58-78. Available at SSRN: https://ssrn.com/abstract=2969359

M. Voué (Contact Author)

Materia Nova ( email )

Parc Initialis, Avenue Copernic
Mons, 7000
Belgium

S. Semal

Université de Mons-Hainaut - Centre de Recherche en Mod´elisation Moleculaire

20 Place du Parc
Mons
Belgium

C. Bauthier

Université de Mons-Hainaut - Centre de Recherche en Mod´elisation Moleculaire

20 Place du Parc
Mons
Belgium

J.J. Vanden Eynde

Université de Mons-Hainaut - Laboratoire de Chimie Organique

20, Place du Parc
Mons, B-7000
Belgium

J. De Coninck

Université de Mons-Hainaut - Centre de Recherche en Mod´elisation Moleculaire

20 Place du Parc
Mons
Belgium

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