Titre :

Zipping-Depinning: Dissolution of Droplets on Micropatterned Concentric Rings

Auteur(s) :

Encarnación Escobar, José [Auteur correspondant]
University of Twente
Dietrich, Erik [Auteur]
University of Twente
Arscott, Steve [Auteur]
Nano and Microsystems - IEMN [NAM6 - IEMN]
Zandvliet, Harold [Auteur]
University of Twente
Zhang, Xuehua [Auteur correspondant]
University of Melbourne
Lohse, Detlef [Auteur correspondant]
Max Planck Institute for Dynamics and Self-Organization [MPIDS]
University of Twente

Titre de la revue :

Langmuir

Pagination :

5396-5402

Éditeur :

American Chemical Society

Date de publication :

2018

ISSN :

0743-7463

Mot(s)-clé(s) en anglais :

Contact angle
Dissolution
Liquids
Phase transitions
Theoretical and computational chemistry

Discipline(s) HAL :

Physique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
Chimie/Chimie théorique et/ou physique

Résumé en anglais : [en]

The control of the surface wettability is of great interest for technological applications as well as for the fundamental understanding of surface phenomena. In this article, we describe the dissolution behavior of droplets ...
Lire la suite >The control of the surface wettability is of great interest for technological applications as well as for the fundamental understanding of surface phenomena. In this article, we describe the dissolution behavior of droplets wetting a micropatterned surface consisting of smooth concentric circular grooves. In the experiments, a droplet of alcohol (1-pentanol) is placed onto water-immersed micropatterns. When the drops dissolve, the dynamics of the receding contact line occurs in two different modes. In addition to the stick-jump mode with jumps from one ring to the next inner one, our study reveals a second dissolution mode, which we refer to as zipping-depinning. The velocity of the zipping-depinning fronts is governed by the dissolution rate. At the early stage of the droplet dissolution, our experimental results are in good agreement with the theoretical predictions by Debuisson et al. [ Appl. Phys. Lett. 2011, 99, 184101]. With an extended model, we can accurately describe the dissolution dynamics in both stick-jump and zipping-depinning modes.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL