Role of evaporation rate on the particle organization and crack patterns obtained by drying a colloidal layer

K. Piroird 1, 2 V. Lazarus 1 G. Gauthier 1 A. Lesaine 1, 2 D. Bonamy 2 C. Rountree 2
2 SPHYNX - Systèmes Physiques Hors-équilibre, hYdrodynamique, éNergie et compleXes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : A scientific hurdle in manufacturing solid films by drying colloidal layers is preventing them from fracturing. This paper examines how the drying rate of colloidal liquids influences the particle packing at the nanoscale in correlation with the crack patterns observed at the macroscale. Increasing the drying rate results in more ordered, denser solid structures, and the dried samples have more cracks. Yet, introducing a holding period (at a prescribed point) during the drying protocol results in a more disordered solid structure with significantly less cracks. To interpret these observations, this paper conjectures that a longer drying protocol favors the formation of aggregates. It is further argued that the number and size of the aggregates increase as the drying rate decreases. This results in the formation of a more disordered, porous film from the viewpoint of the particle packing, and a more resistant film, i.e. less cracks, from the macroscale viewpoint.
Type de document :
Article dans une revue
EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2016, 113 (3), pp.38002. 〈10.1209/0295-5075/113/38002〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-01906238
Contributeur : Véronique Lazarus <>
Soumis le : vendredi 26 octobre 2018 - 15:31:35
Dernière modification le : dimanche 28 octobre 2018 - 01:08:32

Fichier

EPL.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

K. Piroird, V. Lazarus, G. Gauthier, A. Lesaine, D. Bonamy, et al.. Role of evaporation rate on the particle organization and crack patterns obtained by drying a colloidal layer. EPL - Europhysics Letters, European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing, 2016, 113 (3), pp.38002. 〈10.1209/0295-5075/113/38002〉. 〈hal-01906238〉

Partager

Métriques

Consultations de la notice

30

Téléchargements de fichiers

3