Pinning and depinning of Wenzel-state droplets around inclined steps
Yazarlar (3)
Umut Ceyhan İzmir Kâtip Çelebi Üniversitesi, Türkiye
Aslı Tiktaş Kırşehir Ahi Evran Üniversitesi, Türkiye
Mert Özdoğan İzmir Kâtip Çelebi Üniversitesi, Türkiye
| Makale Türü | Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale) | ||
| Dergi Adı | Colloids and Interface Science Communications (Q1) | ||
| Dergi ISSN | 2215-0382 Wos Dergi Scopus Dergi | ||
| Dergi Tarandığı Indeksler | SCI-Expanded | ||
| Makale Dili | İngilizce | Basım Tarihi | 03-2020 |
| Cilt / Sayı / Sayfa | 35 / 1 / – | DOI | 10.1016/j.colcom.2020.100238 |
| Makale Linki | https://linkinghub.elsevier.com/retrieve/pii/S2215038220300182 | ||
| Özet |
| Droplets moving over inclined heterogenous substrates may pin around rough spots. A simplified model of one of these spots having a backward facing step geometry over a chemically homogeneous inclined substrate reveals that the step is responsible from the pinning-depinning of the leading edge of the droplet in Wenzel-state. We consider a two-dimensional partially wetting droplet and model its motion by the evolution equation with a precursor film model. The phase diagrams formed define pinning-depinning transition curves determined by a simple force balance of retention forces due to hysteresis, step and gravitational force. For fixed Bond number and inclination, we show that it is the slope of the step that determines transition. The existence of the multiple steps, however, alters this transition as the receding contact line may pin at the steps and leave residual droplets behind. |
| Anahtar Kelimeler |
| Hysteresis | Interfaces | Lubrication theory | Sliding droplet | Wetting |
BM Sürdürülebilir Kalkınma Amaçları
| Atıf Sayıları | |
| WoS | 14 |
| SCOPUS | 14 |
| Google Scholar | 25 |